Hi everyone welcome to magnet brains Today we will study about materials which are classified into metals and non-metals So basically in this chapter we will study about metals and non-metals So what are metals? I am sure you must have seen a lot of metals around you So what do you think? Which metal is made of the bridges?
If you know please do comment in the comment section below Again if I tell you that you are looking for a metal If you go to a temple, you ring the bell. So, it produces sound. What do you think? Is it made of metal or non-metal?
The answer is that it is made of metal. Because metals are sonorous. That is they produce sound when hit. So, there are many metals that you see in your day-to-day life.
Like if your mother wears gold, then gold is nothing but a metal. To be very precise, gold is not just gold, it is a mixture of two metals. Like gold and copper or gold and silver.
So again, all of this is nothing but metals. You have seen the example of metals. I am sure when you will use your pencil, you will know what is the tip of it.
That is grey fire and it is a form of carbon. and carbon is a non-metal. So how did we know which substance is metal and which is non-metal?
From its properties. What are the types of properties? There are two types.
Physical properties and chemical properties. Physical properties generally depend on physical appearance and all these factors. But chemical properties are completely different. They are studied by chemical reactions.
So what are physical properties? How do metals look? gold is shiny and lustrous so shine means lustrous so metals are lustrous again if I talk about some metals we can cut in the form of sheets and this property of metals is known as malleability so as you can see here we have cut this metal in the form of thin sheets so this is showing that metals are malleable so Silver foil which you use to decorate sweets, the aluminium foil in which your mother wraps food for you, that is a form of a sheet and that is made of a metal aluminium, silver. Clear? So this is malleability, beaten into sheets.
Gold, aluminium are examples. Next, do you know what substance is the wire made of in your house? The wire? which is at your homes is made up of copper generally. Most of the wires are made of copper.
Why are copper wires made? Wires are made of copper because copper can be shaped in the form of wire. And this property of metal, due to which we can divide it into wires, is called ductility so ductility is nothing but converting drawing into wires its example is aluminium copper copper wires have another role why copper is used in the wires if you know the reason other than ductility then please tell us in the comment section ok now you have to take two boxes one made of wood and other made of metal so you have to do this activity at home wood and metal box and play them against each other so you know what will the metal box produce?
Sound so as we said metals are generally sonorous now if we talk about properties then we have already read that metals are sonorous again metals are hard, they are lustrous ductile, malleable, sonorous we have read these properties but next is that they are good conductors of heat and electricity like I asked you why the wire is made of copper because copper is ductile and also because it is a good conductor of electricity so we have seen many metals iron, copper, aluminium, calcium, magnesium And if you have never observed these metals in your day to day life, then I am sure you will definitely see them in your school's chemistry lab. So let me prove what are good conductors of heat and electricity that is how are good conductors of heat and electricity we will read in this video. Before that we will talk about nonmetals So the opposite property of nonmetals will be nonmetals unke aage word non aa gaya hai to this means unki properties metals se to different hongi so metals were hard non metals are soft metals were lustrous non-metals are dull in appearance metals when broken down they break down into sheets what about nonmetals they break down into a powdery mass again metals were sonorous nonmetals are nonsonorous metals were good conductors of heat and electricity but nonmetals are poor conductors of heat and electricity So I hope if I ask you to differentiate between metals and non-metals, you will be able to tell. Some examples of non-metals like I have given you the example of carbon. Some other examples are sulfur, oxygen, phosphorus, etc.
So what are these examples of non-metals? And how did we know this? Because of some physical properties and some chemical properties which we will discuss in our next video. So before that, let's talk about some exceptions. Yes, I told you that all metals are hard.
But there are some exceptions. Sodium. Sodium is a Sodium is not hard sodium and potassium are soft they can be cut with a knife so all metals are hard but sodium potassium are soft they can be cut with a knife again metals are generally solids but mercury is liquid.
I am sure you have observed that if by mistake the thermometer falls from your hand, then the silvery shiny substance that comes out of it is mercury and it is a liquid. If you have not observed this, then there is no need to break the thermometer. Just observe the thermometer carefully. You will see a silvery substance on the bulb of the thermometer which is liquid and which is mercury.
And when you have a fever and you use the thermometer carefully, then you will see that the temperature is not too high. then that silvery metal mercury rises and tells the temperature of your body. So I hope you have understood that the only liquid metal is mercury and this is an exception. Similarly friends, which is the only liquid non-metal? So this is the question, you have to find out the answer and tell in the comment section.
The only liquid non-metal is dash. Kindly fill it. So, I had told you that I will tell you an activity in which we will read that metals are good conductors of heat and electricity and non-metals are bad conductors of electricity.
So, I will definitely tell you about that activity and you can do that activity at home too. For that, you just have to make an electric circuit and test it. So, in electric circuit, our battery is ready.
Our bulb is ready and our tester is ready. So suppose you can see this iron, I have taken this iron object. So iron, you know is a good conductor of electricity, iron. So what will happen? How will we prove this?
When the circuit is complete, all the wires will be connected. and when the battery is on, what will happen? The bulb will start glowing and the bulb glowing means that this iron has allowed its electricity to pass through which means it is a good conductor of electricity If you place an iron rod or nail here it will be a good conductor because iron is a metal again, copper is also a metal Now did you understand why our home wires are made of copper?
But if I talk about sulfur and coal, coal which is made of carbon, these two are non-metals and we all know that non-metals are bad conductors of electricity and I will prove this. If you keep a piece of sulfur or coal instead of this tester, like here, then will this bulb glow? No.
So this will prove that On completing the circuit, bulb did not glow. This substance is not a good conductor of electricity. So friends, what is this? Is this plastic or glass? it won't be a good conductor of electricity.
So if I put a sulfur and a coal piece here, will the bulb glow? No. So I'm sure these activities are clear to you that in this and this case, the bulb will not glow. And in this and this case, the bulb will glow because these are metals.
So this proves that metals are good conductors of electricity and non-metals are bad conductors. So in our next video, we will discuss about the chemical properties of... We will study about elements, metals and non-metals.
Till then thank you. Hello everyone, welcome to Magnet Brains. Today we will study about metals and non-metals. In the previous video, we studied the physical properties of metals and non-metals. Today we will study the chemical properties.
So I am sure you must have seen that on the iron bridge, a reddish color coat is accumulated. That is known as rust. And this is called rusting of iron. So why is iron rusting?
If there is a lot of moisture in the air along with oxygen, like in rainy season, then that moisture and oxygen together form a rust coating on the iron. And it is of brown colour, I am sure you must have noticed. So, government spends a lot of money on iron. which is due to iron rusting and then to repair bridges so what is rust? let's see I am talking about reaction with oxygen so metals react with oxygen and moisture means water to form rust so the formula of rust is iron Fe2O3.XH2O this is nothing but rust so rust brown color substance which is stored in iron objects.
I am sure you must have seen that iron panels or gates in your house also have rust stored on them and this is called rusting. Again burning of a magnesium ribbon. So whenever you go to your school's chemistry lab, you will find that Your lab assistants will show you magnesium ribbon.
How does magnesium ribbon burn? If I burn magnesium, what is there in the atmosphere? Oxygen. So, this is the reaction of magnesium metal with oxygen, which we are reading.
So, magnesium plus metal will form magnesium oxide. And if I put it in a chemical equation form milk who to mg which is magnesium plus or to which is oxygen will form mg or which is magnesium oxide so I hope up to is image miss a guy ahead how do metals react with oxygen you do magnesium car reaction a map for our giggies lights made a colony who the who are going to clear the Jiga Before that, we will do some activity related to rust. So, if I talk about rust, what I have done is, I have taken rust and dissolved it. You can get rust from anywhere, like brown powder which is on iron objects. I dissolved it in water and then I tested it with red and blue litmus paper.
So, we all know that rust is made of metal, of iron. and metallic oxides are always basic in nature and we also know that acids turn blue litmus red and bases turn red litmus blue so if I am talking about my rust which I dissolved in water and then tested it then what will happen is that That solution will be basic in nature and bases will turn red litmus paper into blue. But they will not react towards blue litmus paper.
There will be no color change in blue litmus paper. So I hope this is clear to you. So in this video we studied about the nature of rust which is basic. So, uh I promised you that I will show you burning of magnesium ribbon so this is a pair of tongs with which I hold the magnesium ribbon and burn it so you can see this dazzling white flame like when we burn the phulchadi it burns with the same flame and burns like this so this is nothing but burning of a magnesium ribbon and the white ash produced by this I have already told you that it is magnesium oxide MgO Now, chemical properties of metals and non-metals.
Let us read further about copper. If copper metal is reacting, Water with carbon dioxide and oxygen. Why? Because in the atmosphere there is oxygen, moisture and carbon dioxide. So if I leave copper metal objects in the atmosphere, can it react on them?
Yes, because copper objects get a greenish colour coat after some time. It happens because it reacts with these three and makes this. And this is called basic copper carbonate.
The colour of which is green. So when you expose copper vessel in moist air, then why does it get dull green coating? Due to the formation of basic copper carbonate.
And we had also talked about magnesium ribbon, when we burn it, then the ash we have is magnesium oxide. Now what I did, just like I checked the nature of rust, I will also check the nature of magnesium oxide. I will dissolve it in water and then I will dip red and blue litmus paper in it.
So what do you think? You know that magnesium is a metal. and metal oxides are basic in nature.
So if metal oxides are basic, then what will happen? What will the solution of magnesium oxide do? It will turn red litmus paper to blue. So again, oxide of magnesium is basic in colour and it will turn red litmus to blue.
So what are metallic oxides? It is basic in nature, which is why it turns red litmus into blue. So I hope you have understood that burning of magnesium gives us magnesium oxide, which is white ash.
And because it is metallic oxide, it is basic in nature. Next, Sulphur. And if we talk about oxygen, I have already told you about sulfur and oxygen that they are non-metals. And when sulfur and oxygen combine, they make sulfur dioxide, SO2 gas. And if I want to check the nature of SO2 gas, what will I do?
I will dissolve SO2 gas in water and I will get H2SO3 which is Sulfuric acid. So if I write this word equation in the form of a chemical equation, SO2 plus H2O gives me H2SO3. So you will understand better.
SO2 plus water gives me Sulfuric acid. So if I have found acid, then how will this oxide be? Acidic in nature.
And what is sulfur? Sulfur is non-metal. So can I prove that non-metallic oxides are acidic in nature?
Yes. So what will they do? They will turn blue litmus paper to red. So what does this prove?
That non-metallic oxides are acidic in nature. So what are the two conclusions we have drawn? Metallic oxides are basic in nature and non-metallic oxides are acidic in nature.
So I hope you have understood these two conclusions. And the main concern of studying chemical properties was that I should teach you this. metallic oxides are Basic in nature and non-metallic oxides are acidic in nature. So now let's do an activity in which we will see what we are doing.
So we are taking powdered sulphur in a deflagrating spoon. What is a deflagrating spoon? Yes, just like this. There is a spoon whose upper part is curved like this and then a wire is connected to it.
or a metallic rod connected. This is called a deflagrating spoon. I have taken sulphur on this. And what I am doing here is, after taking the sulphur, I am heating it. The sulphur will start burning.
And after that we covered the tumbler. Now you tell me which gas will be released. When the sulfur and oxygen will react, we just read that SO2 gas will be released. And SO2 gas will be released and we will close the tumbler. If we close the tumbler, the gas will get trapped and will not be able to escape.
Now what to do? We have to add some water to it. So we just added water to it. So, as soon as we add water to SO2 gas, H2SO3 becomes Sulfurous Acid. So, as soon as Sulfurous Acid is formed, water will be formed.
Now, what will Sulfurous Acid do? It will turn Blue Litmus to Red. So, when you check the solution after shaking the tumbler with Red and Blue Litmus paper, Blue Litmus paper will turn Red. But, Red Litmus paper will not have any effect.
will not have any effect. So this activity again proves that sulphur which was a non-metal the oxide which we made and tested it is acidic in nature. So non-metallic oxides are acidic in nature.
So I hope I have explained this to you through the whole experiment. So in our next video we will study the reaction of metals and non-metals with water. Till then thank you. Welcome to Magnet Brains.
Today we will be studying about chemical reactions of metals and nonmetals. In our previous video, we studied the reaction of metals and nonmetals with oxygen and the nature of oxides. In today's video we will study the reaction of metals and non-metals with water.
So if I talk about sodium, sodium is a metal and if I put a piece of sodium in this half filled beaker, then it catches fire instantly as you can see. So you will not do this activity at home because it is very dangerous. So that is why sodium is stored in kerosene because it is very vigorously stored in kerosene.
It reacts with water and catches fire. If I talk about iron apart from sodium, Sodium is a very reactive metal, so it gives a vigorous reaction. Iron slowly reacts with water.
Again, phosphorus is a non-metal. So we know that non-metal is a very reactive metal. Non-metals do not react with water. So, phosphorus is a very reactive non-metal. Still, it does not react with water because non-metals do not react with water.
It is so reactive, still it is stored in water. Because it does not react with water. So, now we will study an activity.
In which we will study about the reaction of sodium with water. What to do? Take a beaker and fill it with some water. And put a piece of sodium in it by removing it from the kerosene. Do you know what will happen?
It will be a vigorous reaction and this piece of sodium will catch fire. Now, when sodium reacts with water, what will it become? Sodium hydroxide. And the formula of sodium hydroxide is NaOH.
NaOH. NaOH is a base which we have studied in class 7th. And what does base do? They turn red litmus blue.
So if I test this solution with red litmus paper, it will turn blue. And if I touch this glass beaker, it will be hot because heat was released from a very vigorous reaction. So I hope you understood this. Now we will study the next reaction with water. So when metals react with acid, hydrogen gas comes out and non-metals don't react at all.
So non-metals do not react but metals react to evolve hydrogen gas which burns with a pop sound. We prove this. What we did here is we took zinc and dilute sulfuric acid which is H2SO4.
When their reaction happened, then ZnSO4 plus H2 gas is formed and H2 gas is evolved. Gas is light so it escapes and comes upward. So as soon as this gas came here, we attached it with a delivery tube.
Why delivery tube? Because the gas coming out of here is delivering it in this soap solution. And as soon as this gas comes out of the soap solution, it will take the form of bubbles.
And around these bubbles, as soon as I brought a burning candle, So what will happen? The gas will burn with a pop sound. And the gas that burns with the pop sound, that is nothing but hydrogen.
So that is why it is proved that which gas was released here? Hydrogen, H2. So I hope you understood this activity.
When metals, zinc is a metal, when metal reacts with acid, hydrogen gas is obtained and a salt is formed. So I hope you understood how metals react with acids. Now, to study this we can do one more activity.
Take samples of metals and non-metals and put them in different test tubes A, B, C, D, E, F. In each test tube you took a metal or a non-metal and put 5 ml of dilute hydrochloric acid or HCL. Now what will happen? By observing the reaction you will know which gas will evolve?
H2. And non-metals react? So you can perform this in your chemistry lab and the metals like magnesium and aluminium will evolve as hydrogen gas and charcoal and sulphur which are non-metals, charcoal is a form of carbon these two will not evolve and there will be no reaction.
So I hope this is clear to you. Now... We'll be studying about displacement reaction.
Displace karna yaane kya? Replace karna. For example, agar apki school mein koi bhi teacher absent hoti hai, toh dosri teacher aake unhe replace kar deti hai. So this is nothing but replacement or displacement reaction.
Now what happens in displacement reaction? In displacement reaction, in chemistry it happens that a strong It displaces a strong metal to a weak metal. So let's see how this happens. So if I talk about one metal displacing another metal.
If I take the example of zinc and copper. So I made a reaction of zinc and copper sulphate. Copper sulphate solution is blue in colour.
Copper sulphate crystals are blue in colour when you go to the lab. So when I mixed it in water, it became copper sulphate solution. That is also blue in colour.
And when I added zinc metal in it, what will happen? Displacement reaction. That means copper will be removed with sulphate and zinc will come in its place. This is known as replacing copper and copper will replace zinc which means it will remain alone. So what will be the product?
Zinc, sulphate and copper. So can I write this equation? Yes, this is a word equation.
How will we write it in the form of symbols? Copper sulphate plus zinc will form zinc sulphate plus copper. Copper will be a red colour deposit and will become zinc sulphate. And this blue colour will decrease and zinc sulphate which is colourless will be formed.
So this is an example of displacement reaction where zinc has replaced copper. So why did this happen? Because as I said zinc is more powerful. Zinc is more reactive than copper that is why it can displace it.
So our conclusion is that zinc is more reactive than copper. A more reactive metal can displace a less reactive metal. If I tell you that if we will do the reaction of zinc sulfate with copper, then what will happen? So there will be no displacement when zinc sulfate will do the reaction with copper.
Because already zinc is more powerful and more reactive, so it will be with sulfate. Copper will replace or displace it. So I hope displacement reaction is clear to you. So a small summary of displacement reaction is that a more reactive metal can displace a less reactive metal. So let's see some uses of metals.
Metals are used in many places like making bells, making bridges. and for making machinery, automobiles, aeroplanes etc. Non-metals.
We know that nitrogen, phosphorus are non-metals. So, they are useful for making fertilizers. We had read about NPK fertilizers. So, among these, phosphorus is non-metal.
That is used as a fertilizer. And again, nitrogen is also used to increase the fertility of the soil it is also a non-metal so they use it like a fertilizer and when we have to purify water we use chlorine it is also a non-metal again you must have read about tincture of iodine iodine is of purple color and tincture of iodine is a medicine it is applied on wounds like an antiseptic I am sure you might have noticed that it is called tincture of iodine. And of course non-metals are used in crackers as well. So these are some uses of metals and non-metals. I hope you have understood this chapter.
If you have missed some videos of this chapter, then you can go to our official website magnetbrace.com and view them. You can download notes of all subjects from class 4-12 Till then, Thank you Hello everyone, welcome to Magnet Brains Today we will study about materials, metals and non-metals This is a topic of class 8 science and today we will discuss its NCRT solutions So, let's see First question, which of the following can be beaten into thin sheets? You know, whatever is malleable, metal We can beat that in thin sheets.
So, out of these, metal is just zinc. Which of the following statement is correct? All metals are ductile.
Generally, metals are ductile. Yes, generally, metals are ductile. They can be drawn into wires.
Fill in the blanks. Phosphorus is a very phosphorus reacts in a very reactive non-metal form. We know phosphorus is non-metal but how is it?
Very reactive. It reacts in presence of oxygen. Metals are good conductors of heat and electricity. Iron is dash reactive than copper. We know that iron is more reactive.
So, therefore iron is more reactive than copper. Metals react with acids to produce which gas? We know that when metals react with acids, hydrogen gas evolves.
We have seen this in chemical reactions. Mark T for true and F for false. Generally non-metals react with acids.
We know that non-metals don't react with acids, but hydrogen gas evolves with them. So, false. Sodium is a very reactive metal. Yes, that's why sodium is a very reactive metal.
we store it in kerosene because it reacts very vigorously in air. Copper displaces zinc from zinc sulfate solution. No, because zinc is more reactive than copper, that is why copper displaces it. This place, nahi kar payega. So this is false.
Coal can be drawn into wires. Coal is a form of carbon and carbon is a non-metal. And non-metals are not ductile.
Therefore, this statement is false. Some properties are listed in the following table distinguished between metals and non-metals. So we know that on the basis of appearance, metals are shiny and for this we call it lustrous.
So metals are lustrous and non-metals are non-lustrous. Again, hardness. We know that metals are generally hard except for sodium and potassium. Sodium and potassium are so soft that they can be cut with a knife.
But if I talk about non-metals, metals to softy or there but diamond coach or gay diamond exception a cookie diamond is the one of the hardest known substance so diamond is an exception malleability to have a metal zone malleable and non metals are non malleable ductile the property to be drawn into wires to a method copper key wires who the egg aroma because copper is a metal so metal is ductile non middle are non ductile heat conduction over pada him metals are good conduct of heat and nonmetals are generally poor conductors. Conduction of electricity, we know that metals are good conductors of electricity. So we know that copper wires which we have at home are of copper because it can conduct electricity.
So this is because they are good conductors of electricity and nonmetals are poor conductors. Give reasons for the following. Thank you. Aluminium Foils are used to make to wrap food items.
Why do we use aluminum foil? Because we know that we can draw aluminum in sheets that's why we use it. And it doesn't react with food so if it doesn't react with food then we can use it easily. Immersion rods for heating liquids are made up of metallic substances. Because we know that metals are good conductors of heat.
So it will be easy to heat. That is why they are made up of metallic substance because they are good conductors. of heat.
Copper cannot displace zinc from its salt solution because copper is less reactive, zinc is more reactive. So, less reactive cannot displace or replace more reactive. Sodium and potassium are stored in kerosene. Why do we store sodium and potassium in kerosene? Because they are very reactive.
That is why we store them so that they don't catch fire. Like we saw in this chapter that if we keep sodium in open it will catch fire. It will react vigorously.
That is why we store them in kerosene oil. Can you store lemon pickle in aluminium utensil? So we all know that aluminium is a metal and lemon pickle contains citrus acid So the citric acid in lemon pickle will react with what? will react with lemon pickle or with aluminium metal.
So, citric acid plus aluminium will form aluminium salt. And when metals react with acid, what gas comes out? Hydrogen. So, hydrogen gas will come out.
then the food is spoiled, the pickle is spoiled because it reacted. So can you eat this chemical reaction thing? No.
So that is why we cannot store it. The answer is no. Match the substances given in column A with the uses in column B. So do we know for whom gold is used?
Gold is used in making jewelry. Iron, if we talk about iron, we know that iron is a machine. Aluminium is used in food wrapping. Carbon is used in fuel wrapping. Copper is used to make electric wire.
Mercury is used in thermometers. The bulb in the thermometers is mercury. I hope this is clear to you.
So we have matched the fuel with carbon. Coal is a form of carbon that is why we have matched carbon with fuel. Mercury is used in thermometers. So I hope the answer is clear to you.
What happens when dilute sulfuric acid is poured on a copper plate? Copper is less reactive, so it doesn't react with dilute sulfuric acid and that's why hydrogen gas doesn't evolve. Iron nails are placed in copper sulfate solution. What will happen?
We all know that iron is more reactive than copper. So, iron is more reactive means it is more powerful. So, it will replace copper and copper will be more powerful. So, you can see in this equation that what will happen when copper sulfate reacts with iron.
Copper sulfate plus iron. Iron is more powerful than iron. So, iron sulfate will be formed and copper will remain alone. So, iron sulfate is green in colour. So, solution will be green.
Earlier solution was of copper sulfate colour. That means it was blue. So, this reaction is known.
known as displacement reaction because your iron displaced copper. Saloni took a piece of burning charcoal and collected the gas evolved in the test tube. How will she find the nature of gas? Charcoal is nothing but a form of carbon.
If we burn carbon, carbon dioxide gas will come out. We know that carbon dioxide gas turns lime water milky. If we pass that gas through lime water, which is freshly prepared, then that lime water will turn milky.
Proof will be given that which gas was released? It was carbon dioxide gas. And how will she find out the nature of the gas? So how will we test whether the gas is acidic or basic? We will test that gas by dissolving it in water.
So whenever carbon dioxide reacts with water, then it will become carbonic acid whose formula is H2CO3. And we know that acids turn blue litmus red. So when I dip blue litmus paper in this acid, that blue litmus paper, the color of the paper will change to red.
So, this will be the proof that what was made was acid. That is, the nature of carbon dioxide is acidic. And if I dip red litmus paper in it, will there be any change? No, because acids do not change the color of red litmus paper. So, can we see this in the form of an equation?
Yes. Carbon plus oxygen made carbon dioxide. Carbon dioxide turned lime water into milky.
And carbon dioxide turned carbonic acid into water. and when I dipped the blue litmus paper in carbonic acid, it turned red. So I hope this question which is very important is absolutely clear to you.
One day Rita went to a jewellers shop with her mother. Her mother gave an old gold jewellery to the goldsmith to polish. Next day they brought the jewellery back.
They found that there was a slight weight loss. The weight loss was not that serious. Why?
When Goldsmith was working with gold, he must have done something wrong. So what is wrong? How did the weight decrease?
How did the gold decrease? Because some gold dissolved. acid me to job us may acid sick cleaning curry to cleaning Chucky's a key hum normally common language may both a polishing curry to put some gold was acid made dissolving oh yeah just say more clean carata is silly a toe gold kava it kya ho gaya decrease oh gaya weight come ho gaya so washing or polishing with acidic solution dissolves the metal in acid and therefore the weight reduced so I hope your questions up In our next video we will study the second topic of class 8 science But I would like to tell you that if you want to get 100 marks in your class 10th board exams Then you can do a very simple thing for this By which you can increase your percentage by 10 to 15% What you can do is you can join our program Magnet Brain Plus It is a curriculum which you can learn from the students specially designed for you so that you can score good marks in the board exam.
The group of teachers we will provide you, they will be expert and you will be given a detailed description. The better the teacher, the more content you can get at home through this program. So definitely subscribe to magnetbrains.com and visit our official website.
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