Transcript for:
Chemical Reactions and Equations Overview

o where is your attention? Your hero is here. Oh sorry, not a hero, but your science teacher It is here. so hi everyone how are you all All? I am your own Prashant Bhaiya And I'm back with a new one shot for class 10th. what are we going to study today? Chemical A very sweet bit of reaction and equation Chapter. And always remember one line. Y To fear when your Prashant bhaiya is here. Ok? Your Prashant Bhaiya held your hand I have held it. You were all demanding that Prashant bhaiya such one shots of class 10th Make a lecture in which you all Make them practice the questions. one such Lecture in which all theory questions are included important question and the question that These are going to be asked in the paper. so everything Your Prashant brother will get it done. something to you Don’t want to do. listen this whole lecture carefully I have to listen. Taking notes on every single thing I have to go. I will give you the notes as well Over on Telegram. give in description Give. Notes: Don't take tension. But To make class 10th better I have taken the responsibility, friend. I thought I have taken it that your class 10th is very Will make it great. So both of you do it together I will take it. You don't have to take tension at all. Ok? Whenever I face a problem in science, I remember it Where is your attention? of your science The teacher is here. There is no need to take tension. all of you I will handle it. New like this for all chapters You are going to see one shots. Correct Is? Today the first chapter is Chemical Reactions and Equation. Let's start. which I first I am watching the bar, let me tell you. my name is Pacific Gentian. with love for me Prashant bhaiya says and your You go to your senior and tell him about me once If you ask me, you will find many things about me I will be able to tell you and you will watch the lecture today If you enjoyed the lecture then comment below Write something nice today. Let's go to the lecture Let's start the . to the butt lecture Before I start, I have a question Let me ask you. Do you know what that question is? that is How is the enthusiasm meter? then comment quickly Can you please tell me how the energy is? how is the josh meter Is? Because my enthusiasm meter should not be high Needed It is yours and mine too. what is your friend? Isn't it? Come on start Let's do it quickly. this chapter is so cute Is. It is very good. is very easy. Very It's simple. Oh brother there are a lot of them There is a reaction. A lot of things are tough. So much All Experiments NCERT Activities. hey stupid boy stupid boy speaks lovingly Am. hey stupid boy all NCERT I will also arrange for activities. You chill. Chill. He is your master or your teacher, right? you Chill out. come brother let's start this To the chapter. The first topic comes in this Of the chapter. What is change? Chapter Start Change happens. Change means change. Any If something changes, what do we call it? Yes, the change has happened. What is an example? Your Prashant Bhaiya. First son I am like this It was visible when I started YouTube Was. I would have made a video like this in 2019 Was. Isn't it? videos of teaching and writing, Strategy videos and teaching too Videos. This is what I looked like in 2019. And Now it is there because of your love 2025 inside right now while I'm making this video I look like this, I mean you are in the crowd You must be seeing that this is your love, so that means Change has come, change has come in my life Isn't it so and there are changes in many other things I got a little smarter yes or it didn't happen, it's okay, hey, I'm just joking I am not smarter than before but okay so that means inside a lot of things What has come, change has come, change has come, right? So you know what would have changed I don't need to tell you what's the change is a process in which final state of a Substance differs from the initial state. That means, it is not the same as it was before. Now he It has changed. Like she had changed too Son. Remember. Okay, I won't joke. Come Go. Now look there are two types of changes Are. What types of changes occur Are? One thing that happens is physical change. And Is there another one? Chemical change. What Is there a physical change? what is chemical Change? Hey silly child is a cute thing. It is a very simple thing. No tension at all Lenny. Studied in class ninth. hey friend class Brother, we have fun in the ninth Were living. we are doing some chatting Brother, we had no concept of ninth I don't remember. I said it doesn't matter friend Come, I will tell you. See What was the physical change? the physical change types of changes took place in which physical There were changes in the properties. Such as You have taken the ice, right? there is snow there is snow. If you keep ice outside it turns into water. that is, if it changed from solid to liquid then I What should I say? What happened? Physical change. What is a chemical change? When the chemical There may be a change in the properties. Definition Reading. Composition Changes Along With the Change In shape, size, state extra. That means here But the chemical composition itself changes Is. Give me an example brother. This is an example. Is it very simple? Take a paper. that paper Burn it. When you burn it. hey about the paper She has said it. It's not about your mark sheet She has said it. How happy you are becoming. see see Isn't it? So tell me to take a piece of paper and burn it. Two. What happens when you burn paper? There will be combustion. Combustion means fire will occur. Is No? There might be a chemical reaction taking place there. Chemical reactions must be taking place. Paper Water If it is there then chemical reactions will take place. i.e That is, what is chemical change? where at Properties may change chemically. Physical Change What is? As if ice turned into water. Water Vapor became. Isn't it? It turned into steam. So what is all that Is? All those are your physical changes. now one The question is asked again and again and that question What is? I will show that to you as well. Brother. The question is at the top of your screen. What do you have to give for this quickly? You all to answer to Is. Yes brother, are everyone's answers coming? The first question is, which ones? Which changes are physical, which ones are chemical? Keep giving answers. It is very simple. Melting Off Ice. If my snow is melting, What should I say? I will tell you brother this is My physical change. No problem, no problem No tension. Burning of candle. Very Importent. Now star inside your notes Write. Mark a star. And understand one more thing. When your candle is burning, two things happen They happen. Look, what a candle has been made of let's go. Isn't it? my drawing is very beautiful son It is dangerous. look oh ho ho ho what a dangerous There is a drawing. Isn't it? Yes. so when the candle it is burning, if the candle is burning then here what is happening? Combustion. and combustion How it is? Chemical change. Combustion means burning. What is burning? There is a chemical change. But Along with that, another thing is happening. The wax in your candle is not wax The wax which it is made of, that wax is like this It starts melting. We say it, mom. Wax It has started melting. Do you burn wax on Diwali? It starts melting. Have you seen it? melting the wax Seems like So the melting of wax is What is? That is a physical change. That is, when If the burning of candles is taking place then give it to me The changes are happening simultaneously. be physical too and simultaneously chemicals are also happening Is. Oh wow friend brother. Yes, this is the game. Did you understand it? Next question. Rusting Off Iron. What is rusting of iron, son? Iron Rusting means getting rusted. Brother War? Hey, everybody knows about iron doors There is no rust on it. Hey, let me show you. Look, let me introduce you to my weapon. Come on brother. I want the weapon to be brought. So the class I present to you our weapon. when you You don't study, that's why I beat you. Look close Look from. if you can see it here There is rust inside the camera. That means there is rusting here. So What is rusting, son? Rusting One What type of thing is yours? Chemical Change It happens. We will talk about it in this chapter I will read it inside now. Ok? of this weapon What should I do? I will keep it. ok sir? Is this clear till here? Come on brother move on let's go. Let's see the next one. What's next? Tearing of paper. admit you didn't your result was bad and your Papa looked at the report card. And they He cheated me and tore my report card. Isn't it? So what will happen? what will happen brother? Bhaiya scared It will take place. Hey, you will definitely feel scared. In addition to that it How is the change? This is your physical change. There are no chemical properties here Have changed. Cooking of food when your mom She is cooking food, she is cooking food. oh yes The fragrance came. I can smell the food bro Today I have made pea paneer. So when the food is cooked If so, what is happening there? Chemical Change is happening. because it should be burned Used to be. It is being burnt. what is it then? That is a type of chemical change. next Formation of curd from milk. Curd. Mummy You make curd from milk, right? That too is a type of what about? A chemical change occurs. His Some bacteria etc. also come inside With the help of which that milk becomes curd. ok sir? So there is no chemical physical change No problem, no dilemma, no trouble Josh Meter Should stay here. Ok? will that do my. Now let's move towards the main topic. What is the main topic? The main topic is chemical What is the reaction? what is chemical Reaction? Hey there is nothing. Definition Let's see. a chemical reaction is a process in which substance undergoes Transformation Resulting in the Formation Of New Substance. That is, such a reaction In which some things come and a new one The product is made. becomes a new thing Is. So let's call that whole process What? Chemical reaction. Will you remember? Very It's simple. What is a chemical reaction? one such The process in which substances are carried out A transformation means changes come in it Are. How do changes come? Chemical change. Then what are we saying? that he is a It is a chemical reaction. very nice. Now the next The thing comes in the chemical equation. what is Chemical equation? chemical equation anything Not there. This is a way of chemical reaction To write to. I mean, what is this? it is a way of representing. i.e. how to write to us Is? To whom? Who knows chemical reactions? Will you tell me? I will explain the chemical equations. then remember what to keep? it shows chemical reactions using Symbols and Formulas. How? Class Ninth I have already read it inside. like water Let us take an example. So Hydrogen Plus What did the oxygen combine to form? Water. Uncle Yes, please give me some water to drink. my throat is dry Used to be. Isn't it? very nice. understand what did I come? Did you understand it? Very true. Is it clear? there is no dilemma in this Problem. I mean, what is this? is this one This is a type of chemical equation. Now, Chemical To understand the equation more deeply, you need to Some basic instructions will have to be understood. Son Look, I don't have much time for the lecture. because I have to read the whole chapter quickly Have to get it done. so everytime i miss a point I will not do it. I will tell you every detail I will explain. I will make you practice all the questions I will get it done. But what do I request of you? That the focus shouldn't move. Isn't it? I In the beginning, he asked, where is your attention? your The science teacher is here. where is the focus bro Is it yours? Isn't it? It shouldn't move. Look brother, now I am going to tell you one important thing. What am I going to tell you? assume that chemical How will we know if a reaction has occurred? Has there been a chemical reaction? Some? have characteristics that indicate Are. as your characteristics are Your hair is black. Isn't it? somebody's hair If they are curly then they are yours There are characteristics. same chemical When a reaction occurs, some There are characteristics. such as the change In colour. what happens sometimes that when If a chemical reaction occurs then the color changes goes. As he said earlier, he also The color changed. Similarly the color changes here too He is going, son. No problem. the next thing ever The temperature changes sometimes. Now look at the two types of reactions that you will remember Should be. One is exothermic reactions and one is endothermic Reaction. now look here comes eggo And here comes Ando. endo ie Inside. Endo means inside. Isn't it? endo ie Inside. i.e. endothermic reaction R dose Reaction in which heat is given. That means its We will have to provide energy inside. And Exothermic is that which has energy inside and energy outside will come. Exo means to come out. Ok? So Energy will go inside it and energy will go out from it will come out. Ok? what else besides that Is it characteristic? Next Characteristic There is a change in state. what happens sometimes Nor does the state change. State means brother Reached Delhi from Jammu and Kashmir. hey that No state, stupid boy. State ie Solid, liquid, gas. Studied in three states. Now this time I am going to teach you another state I am going to be in 10th class which is AQ. What state is this? We call this Aquus. Equus nothing happens. assume any there is a thing, a compound, if I If I mix it in water, then its status will now be It will no longer be liquid. be his state Will you go? Aquus. Ok? So confused It shouldn't happen. Isn't it? Let's see the next one. Evolution of Gas. some of the reactions Some gases come out from inside. and the last is the formation of precipitate. Precipitate What happens? we will talk about that further do. You don't have to take tension, load I do not want to take it. Come on, let's come forward. Now Let's start quickly. what start We do? We start writing the reactions. We do. start writing equations This is how we should write the equations. You must already know it. But before that, my I have a question for you. Tell me the truth. Tell me the truth. what to you do you know how to write any compound What? you have a table inside class ninth I had read it. Let me show you the table. These Wali. Look carefully once and tell me. Do you remember this table? Tell me quickly. What are the students saying? is this Remember the table? Did you read it? did you read it or not Did you read it? Tell me quickly. I had read it. I had read it. I had read it. But no one remembers. to whom I don't remember it very much, I don't have one It's a tool. Let me show you the tools. T T t t son, be careful. Ok? My Nell I keep the cutter's tool with me. Who I don't study, what can I do to someone who doesn't study Should I take it from him? What will I do with this? Ok? So this was a very Important things table. Why? Because these She is telling you everyone's charges. Charges No, this is telling you the valency. Isn't it? This tells the valency of all the elements. Let me tell you about it. As You might have read about sodium somewhere The charge is +1. That means its valency will be one. What about similarly potent potassium? will it be? Valency would be one. Its silver key too There will be a forest; there will be a forest of copper also. Ok? Apart from that there will be two magnesium, There will be calcium. Just like that all of these What were all yours? Remember I told you What are the charges and what are their charges is there any valency in class nine if not If you have read it then remember this table. You will not be able to understand this chapter without the table. such as sulfate ion What is the charge of sulphate is -2 i.e. what will be its valency There must be a value in remembering this now what is the trick, look at this one, you will You will have to remember, how will you remember With practice, you can learn the tricks for both of these what is the trick to remember it one by one I'll tell you what not to say If he is cute to you, he is speaking lovingly The poet is saying with love that if I say no cute, remember me if I don't call you cute the four that you are seeing, all four There will be valency for you i.e. here Two came, that means all the ones below this I don't know how much valency they will have If cute asks you for a car, Zen asks for a Ferrari I want a car zen Why do I want a car zen Ferrari Why are there no three Zen Ferrari cars here now? The valency of all the values ​​below this will come to three What will it be? There will be three cars, right? Ask for a Zen car Why not Ferrari, there are three Alto Ferrari's right? Three Alto Ferraris, these tricks would happen if If you remember directly then do it directly Take it or else do it with a trick like this I had made a trick, what was this trick, hi hello hi hello come out and listen let's take a bath Or you can speak and listen to whoever dances you have to say hi hello come on let's go out Come and listen, dance. Ok? So these tricks Are. You can remember it like this. you remember me like this You can do it. You have to remember them It will have to be done. Now why do we have to read these memories? Because it is from these that we make chemical formulas I write. Let's practice once. write me the formula of calcium carbonate Do it quickly. Now look at the formula Do I have to write? There is a complete video of this. I I will give it to you in the description. I I have read it in detail there. Right now I I will not teach in detail. take a look at him The one who has a problem. Isn't it? 15-20 minutes There is a video. As I first wrote Calcium. First of all son what did I do wrote? Wrote calcium and its valency. What is the valency of calcium? Two. Is No? And then I wrote carbonate. Carbonates also have a valency of two. Now What do I do? cross multiply tax I will give it. Isn't it? Cross to Valence I will multiply it. these two are equal Are. So we can cut both of them and forests. then its formula will be calcium Carbonate. Ok? there were simple things like that Are. There is nothing more. Now once again sodium Write down the quantity of sulphate and tell me quickly. Sodium Write the valency of one sulfate. Valency of sulfate It happens son, multiply it crosswise So this will happen Na2SO4 here comes your sodium sulphate What do we have to write in chemical formula I have to write I hope it is clear to everyone If not then I have posted the video in description I have given it to you, read it, friend, what are you fools doing yes what were you doing in Navi tell me the truth you were enjoying aren't you you were enjoying You weren't telling the truth, you were telling the truth, weren't you? enjoy we know i am ok now i I told you that the physical state is very It is important. Remember this. solid, liquid, Gas and aqueous. What is aqueous? When one When the solution is formed then we call it aqueous. I say it. Now let us go a long way Towards the important topic. and that What is the name of the important topic? that is Balancing of Chemical Equations. Now we I will write the reaction. I will write a reaction to How? Let me tell you. Write the reaction There are two things that happen. what happens? Who also comes on the left side of the reaction. Like what do we call this? Reactants. what do you say son? This we What do you say? Reactants. and this is joe right whatever comes to the side we always tell it Product. what do you say son? Product. Ok? So that means reactants and products are There are two things. and balancing of chemicals What do we do in the equation? As much Whatever is on the left is equal to whatever is on the right Should be in. That means, let's imagine. If there are two hydrogens here then brother There should be two hydrogens here too. If There are two oxygen atoms here, so there are two oxygen atoms here as well. There must be oxygen. Ok? This is what we It is called balancing of chemical equations. The question arises that why do we need balancing? Is? Why do you want to do it? because we have a law I have read it. Law of Conservation of Mass. Who all have read it? Remember. o washed away In memories. Son, in distant memories I don't want to go. be around. Isn't it? There Will not go. It is not a good idea to go there. It is not safe, son. Isn't it? reaching into suffering You will go, poor fellow. no problem thing Not there. So the law of conservation of mass what did he say? Mass can nowhere be created Male B Destroyed. Did you remember? Isn't it? It Must follow the law of conservation of masses. that is mass is nowhere created Destroyed. Because of this, the number of reactants There should be as many products as are in it. Now brother how do you do this balancing? Us A very big problem comes and you know what Is? Neither did we have any senior madam in school nor She scolds me for not getting the answer correct. I said there is no problem. today yours The answer will come and it will be absolutely correct. such as this Let's take it. Isn't it? Look, I have two There are ways. One is the method of NCERT And one is our special PK method. what am I Should I tell him? PK Method. a little of your own There is a different way. Isn't it? that difficult This has to be applied in the questions. All I don't have to do it. just difficult I will teach you that later in the questions. Too. Ok? Look at it like it is. Now this We have to strike a balance. How will you balance it? Now you have to create a table. What kind of table Do I have to make it? You first have to write What are the elements? such as iron There is hydrogen and there is oxygen. jotted down Brother. Now write the reactant on one side. on one side Write the product. Now write it in reactant How much iron is there? So here's an iron. I wrote an iron. ok sir? Correct yes sir. no problem, no trouble, no Dilemma? next there's two hydrogens here, I wrote two hydrogens. An oxygen Yes, I wrote one oxygen. now come On the product side. Look at the product. Here But it's a three iron, son. I wrote three. How many? Is there oxygen? do you have oxygen? Four. So four I wrote it down. Hydrogen is two. I wrote two. Do you see these balances? yes Or say no. I am not visible brother. Blind There is not much. we are like this so much you love us you call me a foolish boy but so foolish Not there. It is visible. I said a lot Excellent. Now how to do balancing? There is a trick. Its a simple trick. see what to do Is? We have to start from the top. Correct Is? We will check if the iron is balanced Or not? You will not say it. How to balance can I do it? multiply it by three I will give it. This is the only way I can balance it. You will say, you can definitely do it. So from three What do I do now to multiply Will I do it? Look son, here is this iron Let's clean this first. This iron what should I put on this iron? of three I will apply multiplication. Yes and no. Here But should I put three? multiply by three Gave. Now it has become balanced. Now below coming. now you can see it here As far as hydrogen is concerned, it is already balanced. very nice. Oxygen is not balanced. So what do I do now? This is done by four I will multiply it. To balance it. multiply by four on the reactant side Took it. So what did I do with four here? Gave? Multiply it. Now as soon as I From here, multiply by four and get one There was a problem. A problem occurred. What Are you in trouble? Hey brother oxygen is balanced Have become. But look how much hydrogen there is? 4 * 2 means it becomes 8. and here are two big This is injustice. does not tolerate injustice my. what will we do? Now this too at Will make. We will make this two into eight. How Will you make it? We will make it by multiplying it by four Buddy. There is nothing in this. How? here at By putting four. So this is your final Equation. Did you understand what it is? Tell me quickly and remind me to drink water that my throat got sore from the water I will hit you hard, then I will be able to speak no how will I prepare your lecture come on yes it is clear very good very good and many students tell us Do you find science boring, oh friend? Science seems boring, I will make you fall in love It's fine with me even more than with science, come on Very well it's done it's done The question became a very simple question Now let's practice some questions So that we get clarity whether we are in water or not Then come above the water. first look at how to make water Isn't it? of water The same question came up. here brother solve this Do it quickly. Look, make a table. what's on the table will you write? Hydrogen Oxygen. Reactants and Product. Ok? two of the reactants Hydrogen. I said very good. Give me oxygen too. very nice. Now the product There are two hydrogens but only one oxygen Is. what should I do? what should I do? Say. Oho friend here to balance the oxygen I will multiply it by two. That means what am I Will I do it? multiply by two here Give. But now a problem arose. What Are you in trouble? When I took this from two If we multiply it, how much hydrogen will be there now? Went? Tell. Hydrogen also became four. Now To equalize this to hydrogen, I have to Multiply by two on the reactant side as well have to do it. That means I need to put a two here It will have to be done. Has everyone got this balance? It was simple. Tell me any problem, any problem It shouldn't happen at all. very simple There are questions. looking at this question Tell me quickly. how to do it? Write that only. See Nitrogen Hydrogen Reactant Product Son, keep watching how many reactants are there two two ok two two how many in the product there are one and three okay very good now How will you balance it, this question is good Now you'll have to put your mind to it Think about it son, how will you do it first? what did i do look up look up Balances nitrogen quickly what will you do multiply by two i.e. I Multiply it by two here as soon as I know how to apply multiple of two What happened? These three hydrogens were now How many are there? Hey, tell me, now that's six. very nice. Now, six here, two here. This is a great injustice. what should I do? from three I will multiply it. Oh man wow! Learn You are gone. Are? You have learned it, friend. So much Learned it quickly. Wow! Did you get the answer? Correct No? That was all. That was all. Why were you getting confused? Why take tension Were you there? Come on, show me how to do this. Its also Show me it. Come on. This is very simple. Write that only. Write. Look which ones are this Do you have a compound inside? There are elements. Aluminum, oxygen, reactants, products. How much is in the reactant? one and two. And Two and three here. Come on brother, what should we do? First of all, you can balance anything. You can try it or you can buy aluminium balance Try it. Try balancing aluminum Take. Isn't it? There is no problem. Let's try balancing aluminium. To all If you balance aluminum first then from two I will multiply it. I said, very Excellent. I put two here. But the problem This is the oxygen balance has not been reached yet, brother. There's two oxygen here. There are three here. Now understand two and three. Now, such questions What do I have to do? You have to understand this how can we make two and three the same number bring it? That means we have two and three here. I have to take the LCM. and two and three LCM Six arrives. Everyone must know this. So, we take these two as equal to six. I will have to go. How will you take it? to this I I will multiply it by three and this will With whom shall I multiply it, tell me son I will multiply it by two, yes or no, yes or If it is no, then it is okay, then oxygen should be six each. It will be very good so I will give it three I will multiply this by two I will multiply it, but as soon as I multiply it by two I multiplied it by , and another problem came up The two aluminiums that were there have now become four, my friend How many problems in life, how many problems Hey friend, now there are four aluminium ones too, tell me We will have to do four on the reactant side as well That means remove these two now. now what is here do? remove this two and what is here Apply? Put four here. So this is yours Final Balanced Equation. Does this tell everyone Is it clear? Did you understand? A lot of this type of All the questions are also coming inside your paper There are. This is what balancing is. Its Apart from this there is nothing but balancing. so much so There is no need to take that much tension. come on come Go. Now, let me show you a question. After getting it solved. This is for basic questions Was. Now I'm going to teach you my method I am going to do the balancing act which I call hmm PK method. What is PK method? Suppose this is the question. Assume this There is a question. You can see this question yes. We have to balance this. That means its The value of the coefficients has to be told. a b c D. We have to tell their values. So PK What does the method say? use of basic math Let's take it. how to use basic maths son Will you take it? Look Look Its coefficient A Is. Ok? How much aluminum is there here? There are two. So what should I do? 2 * as many as There will be as many reactants as there are products Will be. So look how much is there in the product? The coefficient is c and aluminum is one. Then c * 1 Yes or No? Yes or no? very nice. Write this down. This is your first equation. I am making the equation. I am teaching maths Inside Chemistry. Ok? Look next. There are three oxygens here. then I will write 3 * a. How much oxygen on the product side? Is? there is only one oxygen and it is multiplied by d It is happening. That is, d * 1. what is clear Is? very nice. Let's move ahead. Here is one of is hydrogen i.e. B*1 and here How much hydrogen is there? There are two hydrogens. And What is the coefficient? D so D * 2 very correct. Next there's only one chlorine here son. How much chlorine is there? There is only one chlorine. Correct Is? And how much chlorine is there in here? Three There is chlorine. Who are the multiplies happening from? From C. So C * 3 becomes our four equations I have come. Now you have nothing to do with these questions Had to do it. Take the value of A as one. any of the Take the value of one as one. what am I doing Am? I am assuming. let let a = 1 I took the value of a as one. Now a If the value becomes one then put it. when here If you put one put on the value of a then how much is c will he come? Say the value of c will come to two. If I put the value of a here If I do this then how much will d cost? d will come Your three. Ok? d here comes three. Now this Look at the equation carefully. what is this say Used to be? The value of b will be equal to d * 2. d what was it? d was three. Turn it into two. How much Have you arrived? Here comes the six. So your D has arrived. B aa yours is gone sorry B yours has come D * 2 D what Was it son? Three. So 3 * 2 is yours Six. That means the value of A became one. B's What was your value? Six. C's The value has come to you. The value of D came to three. Which option is matching? Now you yourself You can see it. Try matching the options once Take. How much is coming? 1 6 1 6 2 3 this is it Used to be. A option. Ok, that's great. Very Excellent. So this is one of our methods. This is one of your There is a secret technique. So tougher questions than this You can solve it. the rest of this question You can ask this same question to those who are normal There is your simple method, you can do it with that too You can. No problems, no worries No. Do as you wish brother. What a problem, what a trouble, what a load Is. Isn't it? There is nothing to worry about. I don't have to take the load. Ok? Isn't it? So it's not like that some boys aren't like that To become a Sigma. We will not say no So we will do it with this. There is no problem. You did not understand the basic method Do it from. and these are all the students no one who has to do this thing to become a sigma I will apply. Don't be a Sigma. Who You can apply whatever seems easy to you to do. There is nothing to worry about. And Listen you're not Sigma. you are not a sigma yes. Remember this. Ok? and remember that line Keep. potatoes in potatoes potatoes in potatoes in the fridge Sweet. Potatoes in potatoes Sweets in the fridge. You No, Sigma. You are a cutie pie. Ok? will remember this line. Let's go a lot Excellent. I am giving you a question. You have to solve this question yourself. Here is your question which you are asking me You will solve this in the comments. Right now its Take a screenshot. these questions over and over again are asked. Solve it yourself. Basic which is NCERT's way of writing that How many reactants are there? Product How much is there in it and then tell them the balance Walking while doing it. like i taught you has given it. You just have to try this. Question Will be done. Now, let us move ahead. Some? Key Terms. Now we are going to move on to the reactions Are. But before moving on to the reaction, do something. You should know the terms. like most The first one's term is precipitate. What is precipitate? See, First look at the definition of precipitate. What is? it is an insoluble solid which settles down after completion of chemical Reaction. That means, what happens? When a chemical A reaction occurs. Suppose two aqus There were solutions. what were they? Two Aqueous Solution Were. And what did we do with those two aqueous solutions? do it? Made him react. met each other like this Gave. then something will be created that It will be insoluble. would be insoluble and that You won't find it inside. So at the bottom go like you would put mud into water So what will happen? He is insoluble. so that's it We call insoluble substances chemical In reaction we say precipitate. So What is Precipitate? insoluble substance Which does not dissolve. ok sir? For him We say precipitate. Let's have two types I have already told you the reaction. Everyone knows exothermic and endothermic. Now Let's talk about another term. that term We call it catalyst. Now this catalyst What is it brother? See the catalyst some Not there. I will explain you with a story Am. Whose story was this? Chintu Lal and Of his lover. Whose son? Chintu Lal and He had a lover and a son Mantu Lal. So Do you know what happened? What did Mantulal do? Mantu Lal said these two make a good pair Was. Was happy in life. But what happened? As that your relatives would set your life on fire Are. Similarly, what did Mintulal do? Mantulal came and Mantulal said, Mehbooba to him, that Chintu is a very bad boy, Stay away from it. Mehbooba thought he was right will be. And right there with Chintu Lal goes. This is my lover isn't this bad girl Is. Stay away from it. so brother what to do Mantu Lal? Mintu Lal made a distinction between these two I started a fight. There was a fight between the two Isn't it? Isn't it? This is what a catalyst is also. Now look carefully. Here Mintu Lal said Did not fight directly. He He came indirectly. One's ears are filled, The other one's ears filled with emotion and he went away. By work gone. Similar Catalysts substances that cause chemical reactions They come in but are not consumed. That means you would have taken part in the chemical reaction They are there but they are not consumed. accept it Is a catalytic substance. if that substance If 10 grams goes out then it will go out also. He will come soon. That is, they are not consumed, but they Changes the speed of chemical reactions. increase the speed or Let's slow it down. So remember the catalyst What is? Catalyst is a substance that Speeds up the chemical reactions and temperature And the pressure to start one without itself. This is important. without it being Consumed during the reaction. That means he Like Mintu Lal himself did not come. He I filled my ears. What does he do like that? Greatly reduces the reaction speed. But It does not consume itself. It just happens Catalyst. You don't need to read any more than this Not required. Let's go to the G heading Will put. We are starting a new topic Are. and what is the new topic? There is a new topic Your types of chemical reactions. Let go Let's start. look before start are going to do it. But always look at one thing remember that I know a lot of Students do not get distracted again and again they go and that's what I'm saying So don't get distracted. Isn't it? Frequently You open WhatsApp, you open Instagram Do you take it? I just want to ask you a question I am the one whose message you are waiting for yes, right? What do we do? a message I will post it, I will post two messages, it will come now, It will come now, the reply will come now, it will come now. Buddy We are not going to get anything from him. it This is reality. Ok? at the end when the problem If they come, then it will be your parents I will stand with you. this is the truth Is. So it's not right for anyone. For them Read with concentration. Isn't it? whenever If you feel demotivated, my one line will always be there Remember that I always smiled, but I hid it I am sad. Who will tell the time for these people? We are there. Always remember this line. Ok? Let's get started. Type of Chemical Reaction. There are four types of chemical reactions Are. Combination, Decomposition, Displacement, double displacement. one by one I will read it all after that. first to start There are combinations. oh yes the sweetest Reaction. Isn't it? What is the combination? Is No? Like Chintu Lal and his lover both came Went. The combination is done. both stay together Are you staying here? so so combination reaction that is a reaction in which two or more The reactants form a product. i.e Suppose one reactant, two reactants and one Understand when your product starts getting made That it is a combination reaction. Very Excellent. I understood the combination reaction what happens? no problem whatsoever Is. Isn't it? has written the definition that When two or more reactants combine let's do it, let's make a product It is called combination reaction. now over here Some reactions are important which your are inside the activity. Now in activity I am going to teach you everything. that much time It is not that I will experiment with you Should I show you? I know a lot of students They will say, brother, do some experiment. But We don't have enough time to cover everything Son, you should be able to experiment with things. Is No? What confidence do you have? you tell me tomorrow that brother by experimenting with gravity show. Isn't it? Isn't it? Gravity Bhaiya from the roof Jump and show us if gravity exists or not It does not happen. I will teach you the chapter tomorrow Reproduction. You tell me to do it practically. so that's why practical of everything I wouldn’t be doing it. It is possible to do this. It is possible to do this but there is not much time Is. Come on, your activity comes first Magnesium ribbon is used. See Inside the activity of magnesium ribbon we What do you do? We make a magnesium ribbon Let's take it. That is, we take a ribbon of magnesium Let's take this type. What do we do? To all First, we clean it. doing the clean up and burn it. Isn't it? For him Burn it with oxygen. So then which a reaction is taking place, it happens Magnesium plus oxygen. what gives? magnesium oxide. i.e. what is mg + O2 gives? magnesium oxide. now over here Always remember to balance when you write an equation Do it and write it down. So how will you do the balancing? There are two oxygen here. one here too Not there. So you will put two here. now here But if there are two magnesium then it is placed two here Will you give? End of discussion. and along with that, whenever If you are writing an equation, write the state also. State means solid, liquid, gas. So Do you know magnesium is solid? So put a solid in front of it. Oxygen Gas and which is magnesium oxide finally How is it made? That too solid It happens. What is happening in this activity now? is it son? Burn the magnesium. The first point is of these white dazzling flames It burns together. Who does it happen to? It is important. This question is asked. Burns with white flame white dazzling flame. and who finally understands a white colored ash yes? That's not Ash with Pakyon. Isn't it? These wala aish aish means whatever survives, whatever survives its colour is white and it is magnesium oxide. Ok? Magnesium Oxide. How does it burn? Bright White With Dazzling Flames. Now this is yours There is activity. very simple activity Is. Isn't it? Let's burn it in this. white coloured It becomes a powder. now what is the question here It comes to you, I will tell you that. And There are activities too. But before that the question is Will be asked. Why Magnesium Ribbon Is Cleaned? Why are you cleaning it? His Understand the concept. because because do you know what It happens? There was no layer on the magnesium it occurs. Magnesium is kept. Magnesium A layer gets deposited on it. Whose freezes Layer? of magnesium oxide. Magnesium of the oxide. Ok? So now if we If you try to burn it, will it burn? It won't burn, right? Why? How will it burn? First we have to rub that layer again and again will have to be removed. And then we will burn it. to clean the layer of magnesium Oxide We Clean The Magnesium Ribbon. Oho This is the same thing, isn't it? we accept accept there is someone in your life there is someone in me and you and you are that in life And at the same time talking to someone else on the phone are you texting are you talking If you are doing this then it is wrong, no one is wrong now No one will say anything brother unless it is wrong Till both of them don't know I know me I know you can think of anything but you Then you will get slapped, read it quietly, okay? That is, what did I tell you Why clean magnesium ribbon? I got to know that now the next activity is coming Reaction of calcium oxide, now see this What is also a type of? Combination There is a reaction. Let me tell you. Calcium What is an oxide? Lime. one at your home that she has become that. It has been whitewashed. whitewashing It is coloured white. So what is that? We call it lime. lime formula What happens? Calcium oxide i.e. CaO. Ok? So what do I do? I mine I take homemade lime and put it in water I will mix it. I will add water. So Do you know what happens? A substance is formed what I call calcium Hydroxide. and it has another name Slag lime. This is what you are looking at We call this another thing: slagged Slag lime. Ok? Slag lime also Its name is. and the heat release along with it it occurs. i.e. if I put it inside the bucket If I mix it then my bucket will get hot will go. Why will it get hot? because here But heat is released. Now tell me this What type of reaction is this? Combination and at the same time exothermic. Because heat is being released. Very Excellent. So this is the reaction to this Pointers you should know. What are there pointers? that calcium oxide Reacts BiggerSly means very fast React He does. Isn't it? And heat is released. A large amount of heat is released. The Bakar Become hot. It becomes absolutely hot hot. At once Isn't it? He becomes absolutely hot like me. Ok? Did you understand this? So this is yours What is? This is your simple reaction to This question is 10001% in your paper Used to be. I am saying it is coming. Correct Is? Now let's have another reaction to this. Now Do you understand what I did? that was the solution No slaked lime i.e. calcium of hydroxide on their walls Have put. You saw nothing on the walls It shines. Isn't it? Shine after a day She goes. Why does she come? That Shiny Why does the appearance occur? because now a The next reaction that is important is that this slaked lime was environmental what's in it? what is in the environment now Carbon dioxide is in the environment. So What happens to carbon dioxide? These reacts and a new compound is formed and the name of this compound is calcium carbonate. what happens son? calcium carbonate. What is this like? Shiny white coloured very shiny crust it comes, it belongs to it and along with it I have water coming from you. Ok? So, Now what is the important thing in this? Memory what to keep? Remember this. slaked lime is Used for white washing. that we whitewash yes, for that we use this slacked To Lyme. How to do it? it reacts slowly With carbon dioxide. what happens then? Forms calcium carbonate. What came out takes it? Forms calcium carbonate. This thin layer of calcium carbonate gives Balls have a shiny finish. That is, because of this You have a shiny finish. Let's go very much Excellent. This reaction is understandable. what's the matter is it friend? You had fun. very clear Is. It is absolutely clear. Now let me give you a I will tell you the thing. One has its own carbon Dioxide Test. That means, imagine. Imagine this. Carbon dioxide from nowhere It is coming out. How do I know if there is Is carbon dioxide being released from? so one There is a test which I call lime Water test. Remember this. If you need to check Is this gas coming out from somewhere or If it is not coming out then you can do lime water test will you do it. Brother this is the lime water test right now Had read. I just read it. hey lime water some It doesn't happen. It's like the name of my house Let me tell you. my house name is honey And my name is Prashant also. So like this everyone They have their own names. so that slaked lime It was slaked lime. yes yes that's it my friend This is called lime water. So that means What is the test for CO2? Lime water test. What does a lime water test say? Slacked Take Lime. This is called lime water. Pass carbon dioxide through it. Now when you pass the carbon dioxide So your solution will be white in colour. What will happen? How will he be? White. Why? because calcium carbonate is formed It goes, right? calcium carbonate is formed Isn't it? So what is there to remember? the most Effective Way to Test CO2 Is to Bubble Gas Through lime water. This is what lime water is. which is diluted solution of calcium Hydroxide. This is the solution for this Lime water. When we pass it What? Do you know what CO2 is? Who Your solution will become white in colour. or we call it scientifically Milky. It turns milky. Milky Way The white becomes milk-like in colour. Due To Formation of calcium carbonate. ohh fun I have arrived. Let this reaction clear up any problem, Any problem, any dilemma? Let's go till here Your Reactions of Combination Reaction It's over. Now let's look at some questions. Before that I will tell you some important topics Let me tell you. What? Look at the paper sometime me na exothermic and endothermic pe na MCQs are asked. Such as Combustion of methane i.e. burning of natural Gas. What is natural gas? to whom no I know, I will tell you. This is what happens Natural gas. When it gets burned So what kind of reaction is that? It is exothermic and it is endothermic. So kids feels like burning anything Neither would we be giving it heat. butt here But the opposite happens. remember methane whenever If she reacts then do you know what she would do? Is? Carbon Dioxide Water and Heat Release She does. That is, a type of exothermic There is a reaction. Remember the example. Reaction It doesn't matter much whether you do it or not. Example of exothermic. In addition to that, your Have you seen that vegetable waste in your house? It happens. bury it in the soil Are. Sometimes it is done inside the village. We call it decomposition of vegetables West. So, the process of decomposition is When we press it, it becomes known What happens? heat is released, energy It is released. I mean, what is this even? It is exothermic. besides that burning off Magnesium ribbon which we just read about. We What will happen if you burn a ribbon? Is it happening? The heat is being released. So this too What is? this is kind of the same with me Say. It is exothermic. That's great. At once clear. Next Quick Lime Reacting With Water. Just read this too. what was this even? Its Heat was being released inside also. So this too what is yours? It is exothermic. other than that Respiration. Respiration your live process I must have read it. If you haven't read my lectures then You can see it. What is inside respiration? It happens? Your energy is being released Is. And whenever the energy is released it What happens? that would have been your exothermic Is. So these are some examples of exothermic Of. Understand the examples of endothermic. First Photosynthesis is what plants do Are. You must have read this also in life process. So Plants do not need sunlight i.e. Energy is required. what is it then? One Endothermic type. anything other than that The decomposition reaction which we are going to study now have been. So why did I tell you this? because exothermic You should remember the examples. once in a while MCQs are asked. will ask What is Photosynthesis? Exothermic You won't be able to tell me about endothermic, stupid boy That's why I told you. ok sir. It is clear sir. No problem, no issue, no dilemma shine is shining inside the mind then a I will give the answer quickly every time. Come on. Come Go away brother. Come on. Come Go. Let us go. Let's go when magnesium ribbon burns in air The product form is an obvious thing Brother, if this happens then what is the harm in it, let's go Name the type of chemical reaction with When calcium oxide reacts with water Calcium oxide reacts with water So tell me brother what happens what happens It just happens, look at the balanced equation I told you He is repeatedly telling me to write balanced repeatedly asking me to write equations You are watching, now check it once and tell me what This is a balanced equation. One calcium one calcium one two two hydro two give oxygen here too give oxygen Hydrogen two hydrogen. So this is balanced This is a chemical equation. What type is this Is it a chemical equation? exothermic and Combination. Very true. Very true. understand this I came. also mention weather the reaction Is exothermic. How is the reaction? It is exothermic. Ok? Okay, that's right. Let's move on to the next question. ok one thing Tell me has this ever happened to you What inside the school inside the school Sometimes we ask our ma'am Isn't it so, ma'am tell me what to write? ma'am say what's coming into your mind Write down what you remember. Isn't it? Doesn't it ever happen like this, like in an exam, you You are sitting. You take the exam copy You are sitting. Now you don't remember anything. You try it. Hey, my mind, I read something. I read something yesterday. Something else is on your mind There are songs. They're running in my mind Meme ki sugarcane juice big glass ₹20 song chal have been. Did you see it at first glance? As such It used to happen many times. I mean it's big with me It used to happen. It is happening during exam days This is it. Songs come to my mind while writing paper We are going on. hey friend brother today I am going to sing There is no need. If I remind you of that today This might be happening to you too. with me It happens a lot. Right? Let us go. all of them are from home There is a problem. Next question. Metal Ribbon X. Oho X has arrived brother. What is X? is a metal ribbon which reacts with oxygen It burns. How does it burn? Vid Dazzling white flame. Dazzling wherever If the white flame comes then you will get only one activity should be remembered which is Magnesium. Say. Oxide. Magnesium It reacts with oxygen. What Makes it? magnesium oxide. So, to you asking what is X and Y? So, X would be magnesium and what is Y? Y It would be magnesium oxide. very nice. So, Which option is matching? B Option Yours will be matched. Let's go sir. Now it comes to your next type of reaction son which is what about you? A decomposition reaction. Now What is meant by decomposition reaction? Decomposition reaction means breaking down. Bhaiya, you have become very relatable, bhaiya You have become very unrelatable to our hearts How do you know about these things, my friend? You are talking about vomiting, let's stop joking Let's focus on the concept of the concept Listen to the concept, what is a barbara sometimes reactants and there are two or more If the product gets damaged then what will I do? I would say it is a decomposition reaction like that a chemical reaction which a single The Compound Breaks Down Into More an element and a compound where the energy is supply when we are giving some energy and that What will we say if it is breaking? Very Excellent. Decomposition reaction. such as what Chintu Lal, what happened to his lover? Now this They broke down. They became separate. Isn't it? Compound AB A and B separated. Let us go. then decomposition There are three types of reactions. there is one Thermolysis i.e. thermal decomposition Reaction. Where we will provide heat. What Will you give it, son? Fire. Fire. Heat. The next one is Electrolysis. Where we will provide electricity. yes electricity electricity. Another one is photolysis Inside which we will keep the sun. Let us read the examples one by one. examples It is important. all reactions by heart You should understand and remember it. I always get 1101% in the exam. The question will arise from decomposition and the meaning will come. listen to this My point. I am speaking and I am showing I will tell you what question will come. Ok? Let's go to the most First let us study thermolytic decomposition Reaction. The decomposition reaction in which We are providing heat. what are you giving me son? giving heat. Now what to remember here Is? You have to remember some reactions. First Reaction: What is the first example of this? calcium carbonate. The same calcium Carbonate that we just created. Correct Is? If I heat that calcium carbonate I will do it. what should I do? this symbol son one There is a triangle of heat. Ok? For him Do you know what will happen if I heat it? They will break. Between whom? One is your CaO What is this? Quick Lime. Yes. and together with what will happen to your carbon dioxide Son? It will be released. Ok? what are you Will she go? You will be released. Correct? well this quick lime is what I Let me tell you. Quick lime is used to Manufacture cements. i.e. cement etc. This quick lime is used in what we make The work gets done. Ok? So we heat it up If yes then quick lime + CO2 comes. First This was the reaction. now comes the next Activity. The next activity is decomposition of perfluorinated sulphate. Look sir. I am a story Let me explain it to you. this is mine and one more The story of the battle. There was a person from me that The human's name was FeSO4. of FeSO4 There was a fight. So FeSO felt that brother We will have to bring goons. Pacific I have a fight with my brother. So what did he do? They He brought seven goons with him. i.e The actual formula is crystals of of FeSO4 FeSO4.7H2O i.e. seven water molecules are connected. You think that there are seven goons I am with this one. It just came to me. Now the man What happens to him when he is happy Tell me, son, what kind of colour is it? when the man is happy If it happens then it doesn't look green. At once He looks happy. Green is looking green Is. I am happy that I have seven boys with me Today I will make Prashant Bhaiya fight With Prashant Bhaiya. But as soon as they know It turned out that the fight was with Prashant bhaiya. So what Happened? All of them ran away. You were my student, right? Buddy. So, friend, he will fight on his own. So All of them ran away and I mean I got heat So all these water molecules They ran away and poor FeSO4 was left alone. now when When a man is left alone and scared what is the color of his face son Tell? The colour of the face is white. White It doesn’t happen. yes colorless. Yes. So that means When I heated ferrous sulphate crystals What colour has it become? White. be white Went. Ok? Now I told him that now I will break you and heat you more. Now When I heat it further, three things happen It is possible, son. Remember Peric Oxide What is plus formed? SO2 + SO3 is a It is a compound which is reddish brown in colour. It happens. How is the son? Reddish Brown This is of colour. These are two gases. First The gas is sulfur dioxide. The second gas is Sulfur trioxide. This is the activity Yours. Remember my observation of this I have written it one by one. what that ferrous Sulfate crystals are green in color. Green There are. on heating they loose water and colour Changes from green to white. It turned white. The colour drained from his face. Now when I look at this and When I heat it, it forms ferric oxide. What is the colour of ferric oxide, son? Reddish brown. How is it? Radish Brown. Two gases come along with it. Some of them smell like burning sulfur Is. There is a strange smell. Isn't it? what is that it occurs? SO2 SO3 SO2 SO3. Ok? and one more Remember the thing. Well in the next chapter you will You will read what SO2 and SO3 are It is acidic in nature. How is it? Acidic. You can read it like this: metal, non-metal Inside. Butt is fine. I'll tell you right now What is SO2SO3 like? It is acidic in nature Inside. Let's remember this reaction. This only It is inside this activity. Bus. Now it comes Next activity. This has to be remembered. Absolutely Have to keep it. As questions come I will show them to you now. There are questions asked. Yes. So friend it looks like this It is happening friend. See next comes thermal Decomposition. have another. Which one? Now it comes Now it's the turn of lead nitrate. what is lead nitrate It happens? Lead nitrate na poor colorless He is the one. It has crystals. Its What is the formula, son? PBNO3 Whole Twice. so the formula is a little It is difficult so I am telling you in advance Am. So this is what happens when I heat it I will do it first, it doesn't have any color Was. The son was colorless. When I heated it up And when it broke, it gave three things. What Gave things? Look, son. Lead nitrate breakdown First of all he gave a compound called lead Oxide. and do you know the colour of lead oxide What happens? the same color as my current pen It is of. What is the colour of the pen? Yellow. So Yellow There is colour. Remember the colors, white to yellow. plus a gas is released along with it which It comes out brown in colour. How? Brown Of colour. And that is NO2. Nitrogen Dioxide. Remember Nitrogen What is dioxide like? brown coloured There is gas. and you know about oxygen It is colorless. Everyone knows. Correct Is? Now what is important here? To all The first thing that is important is this reaction and this Balanced Equation. this is about balancing you must remember the thing because at that time you you don't have that much time in paper Will you sit to do it? So remember this. how to remember will you do it? 2 4 2 4 2 4 Remember it. whenever you Are you writing the equation for lead nitrate 2 to 4 Remember it. 2 4 2 4 2 4 just remember it like this I will take it. Ok? why was i dancing Brother? Let's go, right? So what happened inside it? White to yellow. well read its pointers Let's take it. What are pointers? Lead Nitrate is colourless. Forms Yellow lead oxide. This is lead oxide. together in NO2 NO2 nitr nitrogen dioxide Which is a brown colored gas. Son How is it? Your gas is brown in color It has been happening. ok, its very good. three three I studied thermal decomposition. All three It is important. Will remember. Now let's go one by one Do it and answer it quickly. Please come. Answer I will give. on heating lead nitrate product The form came directly as a question. Tell me ji Which products were made? Look at a Yellow Brother, don't change your color after seeing the color. The colors are for everyone Let's change. some people change colors sometimes And some compounds change colour when heated Let's take it. Isn't it? So color is very important. Everyone should know the colours, even humans and And also of compounds. Then tell the colour of the compound Its. Colorless Yellow Brown Fumes, Brown Coloured gas and that colorless. Let's go very much Correct. Let's look at the next question. this question You will show me by doing it yourself. quickly this You will ask the questions yourself. Simple Question Is. Come on son, let me beat you a lot. listen to me talk. Come closer to the camera. what are you doing Is? You are not able to answer this question. Now! I have done it just now. right now you have no mom and dad I will give the call to him. Where is my phone? So No, I will get the call to mom and dad. Hi. Hello uncle. Uncle ji. this is yours I have a son. This is your daughter insta reel Scrolls through the whole day. does It remains. And what do I call this a question? Should I give it? What should I give you, one question? This cannot be solved. Please call him See. Yes, look at his phone. Google in that Run Chrome. Check his history also. Check YouTube history as well. Ok? someday, someday, someday it will fall into my hands You are gone. I will tell your family that These people are not studying for you Children. Isn't it? It is not a big thing. On Heating metal nitrate. Metal nitrate is Any? There is some metal and its nitrate. Ok? And we are calling it X. It Decomposes to form yellow color solid. Now! When is Karaya Yellow color made? When the lead What creates nitrates? lead oxide Makes it. and a gas of brown fume What comes out which is it? NO2 whenever If brown fumes appear then it would be the same gas Son, it is of brown colour which is NO2. Correct Is? And the colorless gas which is O2. So you Its balance equation has to be written. 224 224 224. very nice. Let's go sir. now they come Ahead. I have one more question. case study of There is a question. Let's see. during a Laboratory Experiment a Student Heated Some pale green crystals. That means he has some Heat the green colored crystals. Then What happened? On Heating Crystal Turd Brown. Well those crystals turned brown. Isn't it? and strong smell of burning Sulphur. There was a smell of burning sulphur. So What are you saying, which reaction is this? Tell. hey friend i just told you about crystals of When we heat ferrous sulphate excessively So what does he make? Ferric oxide. What Makes it? What is the Colour of Fe2O3? Reddish brown. Two Gases SO2 SO3 Sulfur dioxide, sulfur trioxide right? How are these two gases? Is it so, son? It is acidic in nature. How are they? They are acidic. and the address These are the gases due to which acid The rain that you see is made of these gases Because of this, acid rain occurs. So now all of you You will answer all the questions of . Bus This was the question. all of it There are parts. You can try it. Identify the type of chemical reaction. What type of chemical reaction is this? Say. Thermal decomposition reaction. Let's go sir. Very Excellent. You would have had these questions here They are finished. Let's go sir. So now we move on of the electrolytic decomposition reaction On the side. Ok? Now what's in it? We are the power Decompose a compound with the help of do. That means we will break it. What is Decomposition reaction? in which we are breaking Are. They are breaking it. It's just a simple thing. Now There is only one example in your NCERT which That is water. We will break the water. How Will you break it? This experiment is called a Look carefully at the bar. This is an experiment. Two rods are connected to the battery. One Road There is the cathode. One is the anode. Ninth I read it in class. oh in the ninth you I did not study. No problem. Look at this which anode you can see this is kind of It is positively charged. And this which The cathode is what it looks like Son? your negatively charged compound this It happens. There is a negatively charged side. ok sir? what happens now? Now to understand try. When we break the water Let's pass the electricity. first of all then We add a little acid to the water. What do you mix? Add the acid. Why Tell me do you mix acid? Because there is no water isn't it pure water or electricity Does not conduct electricity. So we Why add acids? to make or to Increases conductivity. Electric water to increase conductivity If you want to pass electricity through it then a little bit Add the acid. What will happen to him? Electricity It will pass well. if there was pure water If it is there then electricity does not pass. Ok? So Let's add acid. Then what do we do? Let's take two roads. Cathode Anode. Now we have Did you see that oxygen was formed on one side and What happened to one side? Hydrogen. How Will you remember? I am telling you a trick. Now The trick should remain between you. not out Should be known. Come on, hey. Does anybody come Would you say? Come on, hey. what do you say? come on go oh that means go away Hey. Isn't it? CHOA go away hey. this is what you say No? Come on hey that means look. C means cathode. Hydrogen gas is formed at the cathode. Ok Yes? And oxygen gas is formed at the anode. Ambulatory move away oh Did you remember? Did you remember? Cathode, Hydrogen, oxygen, anode. Let us go. So in this What is a reaction? that would be your water Inside whom does that water break? Two Hydrogen plus oxygen inside the gasses Inside. Now please balance it, son Take. I say it again and again Write only balanced equations. Ok? So This is your balanced equation. Now What is the question asked? something means this This experiment is, some of its These are important keywords. You should remember that. Look son, here is the keyword I am going to mark you I am getting it done. The Ratio of H2 and O2 Collected is 2:1 by volume. That is, remember remember to keep that which is your hydrogen gas Isn't it's volume is double as compared to Two oxygen gas. What is the ratio? 2 Forest. Hydrogen to Oxygen. Why does it happen? Why? because when we balanced chemical If we write the equation then it is clear that here but there are two coefficients, and here the coefficient There is one. so therefore hydrogen which would be That will double by volume by volume. Now I am giving you a question which is You have to write to me in the comment. In the comments You have to write that this is the ratio by Volume. Now you have to tell the ratio by Mass. This is what you have to tell about the comment If the answer is correct, I will pin it also. ok sir? Now let's ask some questions about it Let's see. Why we use acid drops in Water? Why do you use it? pure water is The poor conductor. He is a poor conductor. So to increase the conductivity Very true. Now let's come to the next topic On the side which is important. Do you know? What is the test for hydrogen gas? Value If hydrogen gas is coming from somewhere then Tell me the name of that test. such as carbon What was the name of the test for dioxide? Lime Water test. Similarly, hydrogen tests bears the name of Pop sound test. What happens? Pop Sound Test. i.e. pop sound test i.e. If you place a candle near hydrogen gas If you take it, it will start bursting. to pop It will take place. Paw Pop Pop Pop Pop Pup No Fireworks Would get up. Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp Ppp p p p p p p p p and do it like this Seems like It starts making a pop sound, friend. So that is his test. I gave you this why did you tell me? because once a question Was asked. in experiment of Electrolysis. If I am a burning candle I take a burning candle as the anode and What will happen if I take it to the cathode? Now Let's see his answer. If I him I'll take it to the cathode. At the cathode what was it son? Your hydrogen was at the cathode Gas. if I take it to the cathode So how can hydrogen gas be produced from hydrogen? Will it burn? A popping sound is heard. i.e from what is burning in the candle The hydrogen will explode. to make pup pup pup It will take place. Now suppose I place this candle on the anode Should I take it? What is on the anode? is at the anode Oxygen son. Now tell me one thing What does oxygen do? to oxygen combustion It promotes. That means your candle which is burning It was burning brighter, right? It will start burning more. the candle burns more Brightly. Is it okay son? How will it start burning? It will start burning a lot. in a good way It will start burning. This will happen. Ok? So The candle burns more brightly. ok sir? These It is important. you will be asked questions Inside the paper. Remember this. What? Hydrogen You will go to If the candle is brought to the cathode You will go. What is at the cathode? Hydrogen. What will be? Pop sound. what if at the anode will be? Oxygen will start burning more. Let's go now Some questions have been asked regarding this. One Let's see the question. What? a diagram Below shows the setup. a what type of Reaction take place? Which type is this Are you seeing the reaction? electrolytic Decomposition. Just read it. The question has just arrived. Let us go. Explain why this is an example of Endothermic reaction. This is endothermic Why is there an example? because here in We have to provide the energy. Watch Battery If it has been installed then energy has to be supplied. So became endothermic. The Test Tube Containing hydrogen is removed carefully In the apparatus. a lit match stick is brought Near. So I took that test tube which contains hydrogen gas and I am burning I brought the matchbox closer. So what will happen? Hey there will be a pop sound. it will create a pop Sound. Everyone knows this. Ok? Ahead. Write the balanced chemical equation. get it written Gave. What Volume Ratio? Volume Ratio what was it? 1 2 What was it son? 1 2 Very true. why is the few drops of dilute Sulfuric acid? i.e. why add acid Is it being done? Increases conductivity. Correct yes sir. Let's go sir. Very true friend. You How smart are you? catch it once in a while had been. Now let's come to the final decomposition The reaction which is photolytic decomposition Reaction. Photolytic decomposition reaction. It is clear from the name itself. photo ie light will come. that is, that chemical reaction, that Decomposition reaction in which light causes Your compound is decomposing. Is No? they are initiated by exposure to light. What is its example because of light Is? NCERT is a very lovely activity Inside. There is a magic. Isn't it? you too You want to show magic, right? So grab a bowl. Is No? Don't beg, son. No problem. Take a bowl. What to do with it? in that Does a compound come? Silver chloride. What is the compound, son? Silver chloride. Taking this compound. It was white in colour Is. Keep it in the sun. After a while its The colour will change to grey. It will turn grey. Miracle happened. But that is not a miracle. That is a photolytic decomposition reaction. So See what happens is that this AgCl2 of yours It is of white colour. when in When sunlight falls on it, it decomposes Is. And it breaks. In which? Silver and chlorine gas. This gas would fly away Is. This is tata bye-good bye. I am leaving Yes. She is gone. What's left? Silver. What is the colour of silver? hey silver It is a grey colour, right? very nice. So That means I will put sunlight through silver chloride Then this will become a magic miracle. Another one of this An example is silver bromide That is AgBr. AgBr also contains SEM. But The colour is different here. These silver The colour of bromide is yellow. when in Do you know what happens when sunlight comes? This bromine gas evaporates. this is it Ok, I am going. Remember me in your prayers. and this I was saved. So how was the colour? Gray. i.e The color changed from yellow to grey. So these two Activity: Remember these two reactions. The balanced equation is written here. Now There is a very important point in this, which is I have also written it here. Star Mark do it. these reactions are these reactions are Used in black and white photography. i.e the old fashioned black and white There used to be photography, inside that this We used to use reactions. what did you do? We used to use this reaction. Let's go a lot Excellent. Did you understand this? I understand this Went? This entire activity is your NCERT Inside which I have explained to you. Let's go now There is a question about this. first a question Let's read. A question of Assertion Reasoning We do. Come on. What is? When a Silver Chloride is kept in sunlight, it turns Gray. Is this Assertion son true? What It happens? Is silver chloride white in colour? tell me what happens? and they keep it in sunlight It just turns grey. That's absolutely correct. So It is true. Reese reads. decomposition of Silver chloride is present in the presence of Sunlight. Is this also true? Absolutely Correct. Is this the accurate reason? Absolutely. So what will be the option? A. both a And assertion and reason are true. and it is the Correct explanation. Very true. Let's go sir. Let's look at the next question. Why Does Silver Work? Chloride and Silver Bromide Turns Gray Due to photolytic decomposition reaction. Is No? You can write both the reactions here. You can. Let's look at the next question. next question It comes. when silver chloride is Exposed to sunlight it undergoes Decomposition. right the balanced chemical Equation. Balance chemical equations always Try writing with it, son. Isn't it? Always try to write yourself. Isn't it? Put a two here. Put a two here too. Ok? It is solid. this is solid too It happens. But this is a gas. Remember this. Now Here comes an important question. why it Is it kept in black bottle? this is for your paper Inside it is going to be asked that Silver Why is chloride kept in black bottles? Are? Because if no light falls on it, Then it will break. Inside whom? Silver and Inside chloride. It will be different. It will be separated. Let's go sir. Does it even Did you understand all the questions? So now you can note we will do the next topic which is Displacement reaction. Take note brother. Let us go Come on. Displacement a little longer and a half Chapters are mostly completed in an hour and half an hour Will go. Let's call it displacement reaction. Isn't it? Am I not able to develop my body yet? to you I don't think I've built a body A little bit. Are? I am not fit More. Don't you think so? I don't think so Tell me what you think It seems so, right? little by little So it's done. Isn't it? It happened little by little. A little bit. Hey stupid boy, read it. Now! What I'm about to show you is what I I'm going to show you that you are the one It has been taken. displacement reaction to you There is a truth to it. It is the truth of life. the one who You keep talking and don't reply. Do you reply? You are waiting. wait tax had been. No reply came. No reply Came. No reply came. you write again Please reply to me. Are you busy? reply So do it. Are you busy? Oh how many Should I give attempts? UPSC paper is What? Isn't it? Well, you keep doing it. Displacement reaction is for you. See what happens in this? Now see what will be? a chemical reaction in which more Active and reactive element displays The less reactive element. That means a human being Which is more powerful. by example Do you understand Chintu Lal and his lover? By example. Look brother Chintu Lal and his Mehbooba was absolutely happy in her life. comes again A person named Mantulal. Now look at who Mintu Lal was He was more powerful. more money He was good in studies. everything was good. So what happens? Poor Chintulal Mantulal's lover gets displayed with. Isn't it? And Chintulal is left alone Is. This is called displacement reaction. Isn't it? That is why I was talking about studies do it. Be like Mintu Lal. Importent Is. So what am I telling you? What happens in a displacement reaction? For example, let's say this A is more If he is reactive then what will he say? This is B will tell B to go away and he will go with C will form a group. Ok? and here in What will happen? The poor B will be left alone. This is called displacement reaction. Now It will come to your mind that who is this brother How do we know it is more reactive? So There's a table for that, son, which you You must remember this. Anyhow for that I will also tell you the trick. This is a table. If you look clearly inside this table Do you see all these? Almost all are metals. now inside this table The one who is higher is more powerful. That means it is more powerful. That means more It is reactive. The lower the person, the less he is Reactive. But brother this reactivity series How will you remember it in this order? Same Order In. Please remember it in the same order brother It is not possible for us. So we finally How to remember? I'm telling you to take the trick I will come. What should I bring? hey tell me what to take Will I come? I will bring the trick. How will I bring it? See Come. what's the trick? Look brother. Trick Ours is very cute. Remember Katrina? Katrina ji Salman bhai. Katrina ji and What will we do with the help of Salman Bhai? One I will bring the trick. What? K for Katrina. Of From Katrina write son. katrina katrina asked for a car. What did Katrina ask for? car I asked for it. Now which car did you ask for? that is doubt No? Katrina asked for a car. Which one? Katrina asked for a car. Alto aay hi hi. Legend Alto accepted. Katrina Kaif Car I asked for it. Alto Zen Ferrari. Oh wow brother. I asked for a third car, Ferrari. Zen is also a It was an old-fashioned car. Ok? So Alto Zen Ferrari, now what did Salman Bhai give Consider that as a car. still still still hi still you say hi hi still you say hi Why? Still why did you get a Hi? still hi Why did you get it? Silver. Silver Audi. Audi Everyone knows the car, right? Audi. so which one Did Salman Bhai give you the car? Silver Audi. Now Bhaiya what is our relation with this? I I will explain. Seeing this Katrina asked for a car that is potassium this sodium calcium Magnesium Katrina asked for a car Alto Ferrari still still PB PB means Lead Pb means Lead Hi Hi means Hydrogen ok why why it means CU means copper Why did you get this? Now look at this Mili carefully. ml i.e. mercury ml i.e. mercury i.e. Hg ok goti that is mercury goti silver od silver is silver o d a u a u kya There is a sign of gold. Now you will remember Katrina asked for a car Altos Ferrari again also hi why did you get a silver Audi like this Let us remember that we are more smart It is right, but the son is smart, isn't it? Now let me show you an activity I'm not gonna show by doing, I'm gonna teach I am going to do what is your activity one Displacement is the activity of NCERT Reaction Pe Ok Hai Displacement Reaction But now don't tolerate these reactions, I am single We say displacement because Only one thing is being displayed here it is also double, I will take it forward okay now what is going to happen in this activity what did we take? We took some acid. For example, let's assume that we take an acid H2SO4 Which we also call sulphuric acid. Ok? Inside H2SO4 we have found some zinc Add the pieces. That means add zinc granules. Add some pieces. So do you know what will happen? Now Tell me what will happen? hey bro here There is hydrogen. There is zinc here. Who Is it powerful? Katrina asked for a car Alto zen zen means zinc. Give me a Ferrari yet Hi Hi means hydrogen. So zinc is more It is powerful. Then [ __ ] will say hey go away from here and it forms a bond with sulfate and the poor hydrogen gas will release your It will be done. Hydrogen gas flying in the air will go. Isn't it? So what is this of yours? One Type of displacement reaction. These there is activity in you that when we use acid If zinc is put inside, a gas comes out. Which gas is released? Hydrogen is released Is. Everyone knows. what did you do in this? Come on come. Isn't it? and hydrogen gas What is the test, son? Everybody remembers the test Is? Not there? Remember the pop sound test? very nice. very nice. very nice. Let go. And this reaction that happens, it is a It is type of exothermic. how would it be Is? Exothermic. Come on, here comes the next reaction Is. What will we do in the next reaction? We I will take a solution. Whose? a blue colour Solution. Whose? of copper sulphate. Ye Blue It is of different colour, son. Remember this. Isn't it? Now What would I put inside it? of iron I will put in nails. nails not those nails Nail. Nail tuck tuck tuck tuck nail. Tuck tuck tuck nail. Yes. Nail inserted. Do you know what happened? Miracle. What happened? This was the blue colour solution It turned green. Why did it happen? you think for yourself Will iron displace copper or not? will he do it? Bring strength to your mind once, bring strength. Katrina asked for a car Alto Ferrari Iron Ferrari still hi why? If copper is down It will display it. what will you make? FSO4 plus copper will be left alone. So this What happens in the reaction? This is blue colour The solution converts to green colour In. Why? because of the colour it is No, it is green. How is it? Green It happens. I have read it before also. Crystal Colour green yes. So it is green, right? and the iron that there is a coating on the nail Is. Do you understand coating? coating, that is, its A layer comes on top. Which color layer is She goes? Brown. Why? Because of copper Because of. I am getting it written right now, son. don't tension Take. I have written all the points here. Are. So you don't have to worry. You will find everything in the notes. Let's continue understanding now. Blue CuSO4 solution turns light green. Correct Is? The light turns green. Why? Because it happened. control test tube Remains Unchanged. The test tube looks like this Is. what happens then? understand one thing that The nail that is inside it, it is called nail A brownish coating appears on top of it. Iron nails develop a brownish coating. Whose Son? A coating of brown color appears. Why? Because copper got deposited on it. Copper froze above him. So these three Remember the observation. You should remember this. Reaction is important. Ok? Let us go Let's see some more displacement reactions Are. Like I've already told you this Am. ok tell me one thing. into what? These What lead. What is this? Copper. what lead Will it displace copper? remember these reactions I don’t want to do it. Just telling you. Will it displace this? Absolutely Will do it. The lead is on top. Copper is down. so this what will he do? it will displace it and this It will be made and Copper will be left alone. Similarly, if a reaction occurs, suppose Zinc plus copper sulphate. What is zinc will it display? Yes brother, yes he will do it. Zinc up, copper down. so what is here will form? Zinc sulphate and copper alone. So this It happens, it's the truth of life. Displacement There is no reaction or anything else. Isn't it? Life There is a great truth, there is truth, This is the reality of life. so you will remember What happened in the displacement reaction? These Happened. It's simple. There is nothing else. Thing What is going on? It is getting displayed. The one which is low reactive, the one which is high reactive It will display it. now what was the question asked Will you go? Look asked a question Will go. Tell me what the reaction would be and what would it be So what will happen? kids are so stupid now I will get this reacted as well. but you are a fool No it is not so. You are Prashant White to Fear Sent to Pacific. You will see there is copper. Copper brother is less reactive than iron. So There will be no reaction here. Got it? Got it? It is less reactive. This is more It is reactive. so the lesser one is less powerful He can't defeat someone more powerful. Let's go sir. Now let's study double displacement Reaction. In a double displacement reaction What will happen? I will explain you a With example. IPL is on. IPL you would see. Suppose there are two friends. Is No? No, they are two friends. One to RCB I support and I support CSK He does. There are two more friends there, son. One of them supports RCB here as well it does it and and and adds it for one minute I am here and another friend loves CSK It supports. Isn't it? like two two two Were friends. Now what was the problem? IPL Did he say this at that time? Give the cup this year. And He used to say that friend Thala for the reason. Both of them kept fighting. these two also fight Use to live. So he made a trick. He said he will do one thing for IPL You will keep fights and quarrels away in time and your I will thank my friends. Shuk ie Interchange. That means RCB is with RCB will remain. The CSK guy will remain with CSK. Isn't it? And this process is what we call Double displacement reaction. that reaction in Which two compounds exchange their ions. Like he exchanged friends. What will Compound do? Exchange of ions do. Ok? so like this was A B C D so What will he do? This A has a bond with D and B will form a bond with C will take it. It's here brother. here brother take it simple Simple easy, did you understand? Now its two There is an activity that you have to remember. Do you want to remember the color? Yours comes first Solution of lead nitrate. Look at the lead I had read about nitrate earlier also. How is it? Colorless. Ok? Your potassium is in front of you Iodide. what is this even? Colorless. Its also There is no color. There is no color. Correct Is? Its colour is white. such a thing has no color No. Now you can do a double displacement reaction Any displacement reaction is self-generated Will you give? I am telling you a trick. First this Pick it up. Pick this up and go to the other compound Combine that with the last one. Ok? Pick this up first. the first one to the last one Combine it with . then pick the first one and Combine that with the last one. That means lead iodide will be formed. Lead iodide and potassium nitrate. Lead iodide and Potassium iodide. The first with the last, Its first with its last. Ok? Now why is this reaction important? Because earlier there was a colorless solution. know now how is this bun Went? Yellow-yellow. and yellow precipitate formed Is. Look at this lead iodide What's here? Aqueous Aqueous Solution Is. What did you create together? Solid. Solid That Is Insoluble substance. and this is what we Will you say it? Precipitate. Yellow precipitate. And another solution is created. He is one Question. So should I double this reaction? What can I say along with displacement Am? Speak Speak Speak. Precipitate Reaction Can I speak or not? Absolutely You can tell me. A precipitate is formed. Ok? So remember double displacement reactions Mainly precipitate is formed inside. Its Another activity which is under NCERT which is the most important. do you remember this It has to be kept, there are two solutions. it Are also colorless. Barium is a solution Chloride and one is your sodium sulfate. These Solution number two is colorless. to both of these Do you know what happened when you mixed it? A Solution It was made and below it there was a white coloured It became a precipitate. i.e. an insoluble It became the substance. Now you can see their reaction yourself You can write. How? prior to this to Combine that with the last one. and before that Combine that with the end of it. ok sir? So, what will you make? Barium sulfate and NaCl. Now remember this is barium sulphate, it It is precipitate. What is colour? White. See see listen listen listen. I know when ever Things get tough. Sometimes it seems like this Brother I don't understand what is going on What not. my love my friend stupid boy stupid girl can i tell you something To you. Don't take so much load. a couple of times If you write, you will practice in life Everything happens. you too once or twice Practice. Will be done. Will be done. Very It is very simple. Don't take so much load bhaiya It is going on. Isn't it? Will be done. you once If you practice it will happen. Ok? then remember What is Barium Sulphate? white white White white white white and what is this? NaCl This is colourless. So two colorless solutions Mixed together. what did you make? white ppt to you I will prepare the white precipitate and give it to you. Let us look at its questions. Tell me the question. what happens when zinc Granules are added to dilute Sulphuric acid. Which gas is released? Look, this is acid. Which gas will come out? You must have remembered the reaction. Now So which acid and which gas are released? H2 This is what comes out. Isn't it? very nice. Now Look at the question. How can we test it? How will we test this gas? you yourself Will you tell me? I am not talking about me, brother. I I will not commit a sin. Pop sound test Buddy. Now I have told you many times. Come on brother. Now tell me which of these is Is it a displacement reaction? tell me fast. Let us go. feel what? Which one Is there displacement? Look at the displacement. So You must be able to see it clearly. if i am single If I am talking about displacement then here But this one is displacing it. and this What is? Single displacement reaction. These what is it son? Single Displacement Reaction. So if this was asked in the question So what is single displacement? So Its answer will be B. Will you come, son? Answer B will come. It's simple. It's simple. Ok? Correct Is? Let's answer this. Answer quickly I will give. Well, many kids ask this too. Not how to become a topper? how to become Topper? Son, it takes a lot to become a topper This is a simple method. You have to get up in the morning. Ok? with full energy with full energy I picked up my mobile and used 1 GB of mobile data. Do it and go to sleep at night. Ok? this this You will become the topper here. You will get beaten. studies How else will you become a topper through writing? Came. you have already asked yourself this question yes. What is? When Lead Nitrate Reacts With potassium iodide. See Lead Nitrate potassium iodide. we read this reaction Was. a colored precipitate is formed along With a type of reaction. That means tell me which Was a precipitate of color formed? First Reaction Now remember double displacement. Lead What did nitrate potassium iodide make? Lead iodide was a precipitate. How What colour? Yellow yellow yellow. and what is the reaction Is? Double displacement. So Yellow Precipitate and Double Displacement Reaction. Study just now. just now Son, did you understand? So this type of You will find a lot of questions in it They are visible. Let's move on now we are moving on to the next topic which is yours Characteristics of Chemical Characteristics of Chemical Reactions. These There is no topic. I showed you this today I have been. What am I showing you that I Look at the characteristics mentioned in the beginning that change in colour, change in temperature, Precipitate form. Now you can see the reaction here You can write it yourself. if I speak to you Write any reaction of change in colour. Will you write it yourself? Which ones will you write? Blue colour, green colour. Isn't it? Next See. Change in temperature. did you change in Will you write any equation for temperature? Yes. That calcium is inside quick lime When water was added, heat was released. Very Excellent. Do you have any opinion on change in state? will you write it too? How will you write? Tell. How will you write? When we use the water that is yours When it breaks down it gives out two gases Is. That means the liquid gets converted into two Inside the Gases. Look next. evolution of Gas. We have read this reaction many times. that gas comes out. formation of PrecipitatePrecipitate is formed. He too I read it to you. just now just studies. What was the colour of the precipitate? Forget Not there. Yellow yellow yellow. very nice. Let's go, right? Now we are moving towards almost this moving on to the last topic of the chapter, which is Oxidation reduction. Come on. Let's start Do it. Son, keep the enthusiasm meter high. Energy The level should not go down. Do not drop Should be. I will not give up. don't give up I will agree, son. Energy is very high. Let us go. What is oxidation? what is reduction It happens? Oxidation, the use of oxygen Addition or removal of hydrogen. Understand it Son. Oxidation is addition of oxygen and Removal of hydrogen. Let us see an example. As if carbon was alone. If oxygen is added What happened to it? What happened? Oxidation has happened brother. Yes. of oxidation Another definition. If hydrogen is removed. Oxygen is the enemy of hydrogen. go oxygen Used to be. The hydrogen is removed. So look now Here it had hydrogen. But now Look what happened to the product in the product This sulphur was from the sulphur The hydrogen was removed, what happened to it? what happened was wrong no oxidation happened what happened What is oxidation, son? Remember, talk to me, tell me friend, what can you do? are you talking with me what is oxidation Repeat the addition of oxygen, hydrogen move away now what will be the reduction reduction absolutely Its opposite is to either add hydrogen Do this or remove its enemy oxygen Give me an example, let us see an example. Nitrogen was alone. Added hydrogen. What happened? Oho reduction has been done. One more Let us take an example. it had oxygen But I sucked the oxygen out of it. So now What happened? Now what happened to it? Speak up Say. Reduction has been done. that is, pulling oxygen Take. Ok? Clear even here? Let us go. Now I I am going to teach you redox reactions. What is a redox reaction? these are those Reactions involving reduction and oxidation Both are happening simultaneously. both together Reduction is also happening, oxidation is also happening Used to be. Now should we first look at the definition? chemical reaction in which reduction and Oxidation takes place simultaneously. i.e when we are together we call it Redox. Now two terms are very important To whom questions are asked. The first one is RO. Hey, that is not home RO, not Aquaguard He is not saying anything. RO means reducing Agent. Reduce. What is the job of a good agent? It happens? What does an agent do? Agents such as Suppose tomorrow there is an agent of Next Topper and that agent will come and tell you next Topper's course is very good, buy it buy buy buy buy buy agent What does he do to make the other person do that work? is it right if I am talking about reducing What will the agent do that the person in front of him If I'm speaking up The oxidizing agent is then added to the front will it get oxidized what should i do immediately action will oxidize it okay so reducing agent reduces the front oxidizing agent to the front OXIDIZE Now this is very confusing. Me Do you know. I'll give you a trick to You can oxidize any question You will remove the agent and reducing agent. First let us look at a redox reaction. Attention Look from. This is the beta redox reaction. Brother what is there in this? How is redox? I didn't get. Look, look carefully. It had oxygen. Now what does it have Is there oxygen? Not there. so what about it Happened? Reduction happened, right? The oxygen was removed. Now Look carefully. Did it have oxygen? It was not there. Does it have oxygen now? if so what happened with? Oxidation. When Oxidation reduction together is called redox. Now You have to tell who is reducing Agent, which oxidizing agent. A Trick I am telling you. remember this. First of all you You saw the equation and as soon as you saw the equation you Write which got reduced and which got oxidised Happened? So write it. This has been reduced. Yes or not? This has become oxidized. Write it down. write Take. Now one meme of Akshay Kumar was enough Old. Swipe like this. What? Who it has been reduced write it on top of that that same It would be an oxidizing agent. and which oxidizes Whatever has happened will be the reducing agent. Brain There is no need to apply it. Upside Down Joe The same oxidizing agent has been reduced. What has been oxidized is the same as reducing Agent. The work is done. Tata bye-bye good bye. Don't think about it. no brains Placement Did you understand? Did you understand? Some? Let me ask questions. That gives you clarity I will get it. Please come. Where did the questions go? O! Please come question ji. Look at this. to this question See. Tell me who is the reducing agent in this? Which oxidizing agent? See. If this If you look carefully, you will first find this Get out who got reduced? which oxidizes Happened? so it had oxygen but further There is no oxygen. So write it down, It has been reduced. It doesn't have oxygen Was. But it has it now. so what happened Is? It has oxidized. what did i say Was? That means whatever reduces is also oxidizing reducing agent and that which oxidises Agent. Work is done. Tata bye-bye good bye. Went End. So this is your reducing agent. There is a concept of oxidizing agent. Ok? good reducing agent and oxidizing agent by another name I call you. oxidant oxidant nothing Is. That's it. Oxidizing agent. And Reductant Reductant is nothing. That's it. So don’t be confused. The name is different, the work is different That's it. ok sir? Let's get this understood Went. You can practice other questions also You can. But I want you to do an activity Is. Activities which are from your NCERT The last activity is the oxidation of Copper. That means how does oxidation of copper happen brother It happens? How does it happen? of oxidized copper How does oxidation occur? that you understand I will try. What happens? Look at Copper Joe tell me what is its colour hey i didn't see copper wire wire brown Brown Shiny Brown Inside Hey Wire I have never seen brown copper after removing the wire Yes, copper is brown in colour if I'll get him to react with oxygen Son, should I oxidize it? I will definitely do it, see what it does Oxidation has definitely happened, now remember When Copper Oxidizes Copper If you burn it then do you know what copper is like it goes black it goes black Now brother I burnt the copper in my house Mummy turned black and is killing me Is. Mummy is saying that you stole my copper vessel You spoiled it. Now look at mom in life I have learnt the same thing. scared of mom Is. What happened once was that I told mommy I asked mom to have some fun He said, Mom, this cheese is not cutting. So mommy took the knife in his hand and mummy said that It is being cut. So I said when it is being cut then why do I have to eat gourd vegetable daily Do you feed me? So mom took the matter on her ego. One day mommy came to my room and mommy She said, son this book is not opening. So I said it is opening. So the mommy He asked, when it is open, then why should I read it, son? Is it no more? Never do this to mom. These I have learnt it, son. Isn't it? so you too Mummy told brother to put it back in brown Tax. So another reaction occurs. If I I will pass hydrogen gas through this. Remember from this if I get hydrogen gas What will happen if I pass it? Look at this Reduction has been done. What happened son? Its Reduction has been done. Earlier there was oxygen reduction Done. and its back to shiny The brown colour comes back. i.e Earlier it was black, now it is back to brown Done. How did it happen? pass hydrogen gas By doing it. ok sir? ok sir. These One last activity from your NCERT There was activity. Done yes done. Tell me any problem So isn't it? Is there any problem? Any Is there any dilemma? I will tell you soon. Let go Some questions and do the reduction Of oxidation. Tell me. The Reaction Given Below This is a redox reaction. because because tell me What do you think friends? Now in this you You have to tell which of the options is correct Is? Now if you look carefully then it will There was oxygen, but its oxygen was taken away. I mean, what is this? This has been reduced. These It has been reduced. ok sir? Understanding is coming In? Look ahead. Now look at this, son, if you If you look carefully, it has got oxygen Is. That means it is getting oxidized. i.e MNO2 which will be there is reduced and HCL which Yes, it has oxidized. So D option is Your correct answer. ok sir? correct answer You get this. Ok? Other than this I will also give you two questions for homework. I have been. This is a question. Its Take a screenshot. It is from NCERT only. Give this a try. which I just now The concept explained is the same. just remember Inside this you have to remove the incorrect one that What is incorrect? You will do this yourself. This is a very simple question. Look next. next what is yours? That reddish brown metal y. Ok? There is a metal y which is a natural compound of oxygen. reacts together and he is black in colour Makes it solid. There is only one compound that Makes a solid black color. What was it after oxidation? what was that Son? That was your copper oxide. Missing you Went? then what will be y? y will be your copper. This will be your copper oxide. what are you saying Is? They are considering this as their x. Ok? There are more things given ahead. x is heated with Hydrogen. it get reduced back to the Reddish brown why. That means when I When I passed it through hydrogen gas So what happened if you got it done? Copper is back And along with it your water also gets prepared. Everyone knows how to do this activity. this reaction Everyone gets it. ok sir. very nice. Always remember the balanced chemical equation to try it. put two here and here But put a two on it as well. Balance Chemical Equations Always try to write. write as much as you can Son, the more you can write the better. Let us go Here, here finally this is your chapter It's officially over. There are two topics on Corrosion Residue. He's your last one. Me You know, out of many NCERTs, this The topic is deleted. on UP Board, Bihar Boards Many boards have this topic inside them are asked. This is a 5 minute topic. and you If you are from CBSE board, you should also study. know why? because in the next chapter it It will definitely come. What is corrosion? Me Now there is no need to tell. i you Should I tell you with definition? when a Metal surfaces are attacked by a substance Like oxygen, moisture and acid the metal is Set to undergo corrosion. That is, such a process that can ruin your metal It will start happening. It will start getting destroyed. Then I would call that process corrosion. Corrosion Because of whom is this happening? Oxygen Moisture This way. What is an example? Your Iron Iron I showed you that it rusted in the beginning. So what is rust? Corrosion. Ok? Look now Corrosion has different names. each one Corrosion of metal has its own name. Like iron loves corrosion with its love I call you. Rusting. not with love You call him like this, right? But yes. So rustling what happens? Rusting is corrosion in Iron. So remember iron reacts with air And water. Two things are important, son. If there is rusting on iron then two things should be done It will take help. One will be air, one will be water. Both of these are necessary. It is compulsory. in It won't work without both. If these If either of them disappeared Rusting will not occur. Air and water. Air and water. Ok? when that reaction happens So what is the brown colour? Yours becomes rusty. Isn't it? so one You get a brown colour which we call It is called rusting of iron. Now for Silver In case we call it tarnishing. what do you say? Tarnishing. What is Silver It happens? whatever your environment is Contains sulfides. Sulfide. i you Let me just show you the reaction. i you Let me just show you the reaction. Iron Oxygen and combines with O2 and gives a brown Get some reddish brown colored thing Takes it. This is not the war I started for you It was also seen in. what do we call him Are? Hydrate iron oxide. Ok? Whereas silver which is there have you seen your silver Mummy must be wearing anklets. after a long time That anklet turns black. becomes black Is. Why? because in your environment There are no sulfides. What happens? Sulfide. So what do they make? Silver Sulfide. and the colour of silver sulphide is It is black. Because of this the anklet in your house Whatever mom wears, it turns black. His Besides copper, isn't it copper? If copper is long If you keep him outside for some time then what does he do? that's carbon dioxide or carbon Reacts with dioxide and water And do you know what he makes? he made Takes copper carbonate. Copper Carbonate He makes it. Isn't it? and know its colour how is it? Its colour is green. What does green look like? Colour: Green. That is, Copper When corrosion is taking place inside it turns green Used to be. Isn't it? Isn't it? Green inside Copper, Black inside silver, reddish inside iron Brown. I said wow friend there is variety. Is No? So the reddish color in it and this black and These. So what happens to you? of corrosion Topic. One last good prevention of Corrosion. How to prevent corrosion? We are going to tell you in detail about metal and non-metal. We will read it in the chapter. you just have to read There is no need. But you are one or two Understand the example. like painting your houses The iron gate is painted. Is No? If you have a bicycle, then a bicycle chain Grease is applied in. Greece. Why Do you apply it? so that we can add oil also So that we can prevent rusting. Correct Is? Now one last topic, rancidity. Me I know the chapter is ending. stop wait Come on friend why are you getting nervous? Isn't it? Rancidity. What is Rancidity? Rancidity A is one such phenomenon. First definition Let's read. Then I will explain it to you. Rancidity Acres When Oil and Fat Containing food items are exposed to air For a long time. Leading to Oxidation Edge A Result Food Develops and Unpleasant Smell and taste. That is, the more fat you have It is food like your chips, have you seen them? If you keep the chips outside they get sealed. Their taste changes, their smell also changes goes. yes, same process is called rancidity I say it. That means rancidity is the process Of oxidation of the food which has fat. Those which have fat or oil in them oxidation due to which their smell and The test changes. the same process It is called rancidity. Your example is that If you keep Namkeen Bhujiya outside then it will get sealed She goes. Their taste changes. Chips Chips go bad. Why? Because There is fat and oil in them. Correct Is? So this is rancidity. this definition Will remember the rancidity. What is happening? The smell is changing. What goes along with the smell Are you changing son? Who? Please tell. Smells so It is changing and the test is changing. so which It is written odor, it means smell It happens. There should be no confusion. Ok? Now this question is mainly asked Don't you ask what is raincidity? They ask Tell me how to prevent rancidity. Now You don't need to memorize it. foolish boy Not everything has to be memorized. Make it yourself Answer. What? Hey friend, have you eaten chips? Chips. The same Uncle Chips that has four inside it There are chips. There is full gas. i.e That gas is added. Which gas is it? nitrogen gas. Why do you put it? Two Prevent from rancidity. So the first one What is the point? The first point is filling of nitrogen gases. Nitrogen gases are Prevents these food items. Next what thing? Store inside the refrigerator to do. Have you seen cheese, milk, curd We keep all these in the fridge. Why? because when they are kept in a cold temperature What happens if you keep it? its oxidation It doesn't happen. Ok? so refrigeration of food Item. One thing happened. The next thing is the addition of Antioxidants. That is, some such chemicals Substances that provide oxygen to your food items Protects from. Here the name itself contains anti-aliasing Used to be. Anti-anti means that which will stop. Will prevent oxygen. i.e. antioxidants There are those substances that stop us. Who do you stop? your food item prevent from oxygen. Let's save it. Isn't it? So inside some food items Antioxidants also add rancidity To prevent from. So here is your The whole complete chapter. Isn't it? Yours here The chapter ends. this is a question Was. What is corrosion? I told you. of metal The destructive process is corrosion. You can write right one example rusting. Mention two methods to prevent this. How Will you prevent it? Oiling, greasing, Painting, all of that. Next question. Right Balanced chemical equation of the following Reaction. What? Quick Lime. Quick Lime What used to happen, son? what is quick lime Was? Used to react with water. What did he make it? Check your own intelligence. Oho What are you looking at on the board? Write it yourself too. Yes friend. Ok. very nice. this balance This is a chemical equation. what type of Is this an equation? exothermic and Combination. next electricity is near Through water. So whatever your water is What does it get converted into? Say. Two Gases are released. Make sure to balance it. Yes. How is the reaction? Therm Electrolytic decomposition. Silver Bromide. Oho, if I expose AgBr to sunlight What will happen if I give it? At least one AgOG will come. Ag will come and you can balance Br2, son. Put two here. Put two here. Correct Is? So who all have balanced your chemicals? Did you answer correctly? Now I will ask you that question I am going to give you the answer to which I will give you Just comment when this video ends Let this session get over, after that you I have to answer. Ok, I hope you can answer this Will you give it in the comment now. you have solved it will be. Now finally see this chapter here It's over. Now I'll tell you one thing I want you to know that right now You read it. Did you enjoy it? How much Found it interesting. The question should also be solved Must have been there. friend, not in your childhood There was a topper. in your eyes as a child That was passion. I know. where did he go Topper? Where has that man gone who after working hard As much as it was. You have it inside you, but you It has been hidden. Bring him out. that much slug it out. Rub that much. Isn't it? I know People will call you mad. People will say that so much Why do you study? why so much hard work does it? Nothing. Let me speak. I my Let me tell you the story. Let me tell you my story. When I was in my college then a very Big celebrities came to our college Inside. So everybody was saying come on come on come on I said Friend, that day I will go to a concert When I become that big, I will be with the celebrity So that I can stand next to him. Ok. Everybody in college used to say that he is mad. He is crazy. what are you saying? Celebrity's Don't go to meet celebrities face to face remained. I have become so foolish. got so crazy Is. He finished college. It's been 3 years today Are. next to the same celebrities I have had my photo taken while standing. Why? He established his status. How did you make it? Made with hard work. You will also make it. You will also make it. How will you make it? With hard work. Ok? Isn't it? Hard work do it. what to remember? that you can do and Say this to yourself daily. I am the best in the World. I am the best in the world. I I am the best. Just speak to yourself. Self Have confidence. and this chapter's darling line is in the chemistry of the life b The Reactant That Starts Amazing Transformation. i.e. a reactant itself Be yourself and bring about your own transformation You can get yourself a great product You will make it yourself. Ok? So this was ours Today's lecture. If you like this lecture What did you do with your friends? Shareware Do it. So new lectures have arrived Prashant Bhaiya Of. Which chapter do I want the next lecture on? Comment quickly. If there are a lot of If I get comments, I will post the next chapter soon. I will upload it. On this note signing off. I am your own Prashant Bhaiya. See you in the next lecture. Love You all. Lots of love. Bye-B. Let us go.