hello great 12 physical sciences Learners and welcome back to my channel I'm Miss Martin and in today's video we're going to be going over what you can expect the different topics for term two I'll be going over what the different topics are this term the subtopics what you need to know for each topic I give you formulas and in this video I'm going to tell you how to prepare for these topics as well so I'll give you lots of teacher tips on how to prepare coming from me being a teacher myself and I will show you all of this in free document that I've created for you it's available on my website missm martin. zo. if you haven't subscribed to my channel yet please make sure to subscribe because all the topics that I mentioned in today's video I will be making more videos on those topics if I don't have videos on them already in my channel before we jump into the topics the different subtopics how you can prepare I just want to mention that the order of the topics that I mentioned in this video are in line with those listed in the grade 12 atps and this is basically a document that the Department of Education um publishes you can see it linked in the description box below and they give an indication of the order that they think the topics should be taught in however your school May teach these topics in a different order so your school may decide to not follow the atps and therefore the term two topics might not align with this video so always double check what the order of topics is with your school and with your teacher just a reminder that everything that you see in this video is can be found in my free document where I list each Topic in detail you can find this on my website missm martin. where you can download it for free so basically I created it like a checklist so that you can print it sticking in your book you can use it while you're going through the topics in class you can use it while you're studying as a checklist and because this is a metric video the document also includes very important information about your prelim exams and your final exams so these are the topics according to the atps that your school will cover in term two now it is a lot remember you're in grade 12 so we are kind of squashing in a lot of topics in one term you can see that's a lot of chemistry topics but there are also some Physics topics and they're quite big topics and that is the order in which the government or the department recommends that your school teaches it in so most schools do follow the atps so let's take a look at the different topics so our first topic is called work energy and power this is a mass physics topic and I will remind you how you can prepare for this topic we have got defining work understanding the difference between positive negative and network you need to be able to draw force and free body diagrams so immediately you can see that this is stuff from grade 11 that you need to know how to do calculate the net work done on an object State the work energy theorem and apply it on horizontal vertical and incline planes define conservative and non-conservative forces and give examples and it does carry on over here there's a lot that has to do with energy so the principle of conservation of mechanical energy and there here's a new formula that you will be learning power calculating power defining power and using power to work out certain calculations now there are a few things that you can do in order to prepare for the work Energy power topic and that includes going over energy now energy is a topic that we learned in grade 10 physical sciences and in particular we learned about the law of conservation of mechanical energy so that the total mechanical energy is conserved in a system remember the sum of potential and kinetic energy before Collision is the same as the sum of potential and kinetic energy after Collision now going over this will be very helpful because you need to use this again in this section and we learned about a few more extra things but you need to be able to apply this Principle as well and I said over here go over Newton's laws in particular how to calculate net force this is a very very important thing that you need to be able to recap in order to do because you are going to use net force in order to calculate net work so you might need to go over the entire Newton's law section I do have a playlist on my Channel with a lot of videos I also have a study guide that I'm working on just check out my um website for more information about that and then I wrote you read over the theory and the basics because if you have already read over the the terms the concepts and a little bit about the formulas before your teacher goes over it you will be prepared when your teacher gets to that in class and just to show you I do actually mention the important formula that you need to know for each little subtopic I go over what you need to remember what they give you on the data sheet and what's actually very useful about this document is I give you the formulas that they give you in your final physical sciences exams so everything that you see highlighted in yellow they give you on your data sheet in your exam however everything else that's on this formula sheet but is not highlighted in yellow so all of the other stuff so for example this stuff over here I don't know if you guys can see it but I expand the formulas I expand each formula that is not given on your data sheet but you need to know how to do that so I think that downloading this document and using this data sheet is very helpful you need to know how to expand the different formulas because they just give you the basic formula in your data sheet you need to know how to take that formula expand it substitute in and get an answer our next topic is another physics topic called the Doppler effect now this has to do with sound and it links to the waves topic which we did Cover in grade 10 and in grade 11 so the doppo effect is a completely new concept you may have been taught it or it may have been mentioned to you in previous grades but you need to know the definition you need to know what happens when a Sound Source so something that is making a sound moves away from you or moves towards you or if a listener moves away from a Sound Source or towards a Sound Source it's a very interesting topic it's a very short topic and you do learn a new formula that you need to be able to apply and you also need to apply the Doppler effect to situations that involve light so Doppler effect and light everything is listed in this document again the data sheet is probably one of the most useful parts of this document I have highlighted the formulas that they give you on the data sheet in your test and in your exams and I expand on some of them I explain some of them and when you would use it so that is very very helpful in order to prepare for the section what can you do you can go over the topic waves from grade 10 especially how to calculate frequency wavelength and wave speed because if you go back to the formula sheet that they give you for Doppler effects you will see that you need to be able to calculate all of these things in order to use the new Doppler effect formula our next topic is for all the chemistry lovers out there it is rates and extent of chemical reactions now again this is a new topic but it builds a lot on things that you've already learned in grade 10 and in grade 11 so I've broken down the subtopics there's a new formula that you need to learn although beware this formula is not given on your data sheet you need to be able to just look at the question and know how to apply the formula so if they ask you to calculate the rate but they give you Mass how mass changes over time then it'll be change in mass over change in time if they give you how volume changes so in the beginning we have no volume and at the end of the experiment we've collected a large volume of gas then it'll be change in volume over change in time you need to know a lot of different things like how what factors influence the rate of a reaction so for example temperature so higher temperature hotter higher rate of reaction colder so lower temperature slower rate of reaction or lower rate of reaction so again I've listed all the subtopics you need to know how to do each and every one of these and I do eventually list all the formulas that apply to this topic I will get to this in a second but for now just make sure that when you cover this topic rate and extent of reactions you can do all of the different subtopics but how can you prepare for this this topic is strongly linked to energy and change which is the grade 11 topic now if you can recall we learned about activation energy Catalyst exothermic versus endothermic reactions basically how the energy changes as the reaction proceeds I hope you can all remember that so we need an activation energy in order to get the reaction started then you have the activated complex at the top a catalyst speeds up the rate of the reaction by lowering the activation energy all of that stuff you need to know again for this topic they can test this in grade 12 but the rates and extent of chemical reactions Builds on this if you've already learned about the Collision Theory which a lot of schools already teach this in grade 11 go over that again because that is what this topic is built upon the Collision Theory and stochiometry so that's the quantitative aspects of chemical change all the different calculations you know where you calculate mass volume number of moles and you use mole ratios all of that stochiometry plays a massive part in this topic so if you need to go over that topic again you need to practice it go look at videos on my channel I also already have a stochiometry study guide so I will link the the purchase link for that in the description below as well it's very very helpful I do even have some rates of reaction questions in that little book so make sure you go over it make sure you are familiar with all the calculations all the sto geometry then we've got another chemistry topic called chemical equilibrium this is quite a nice topic if you get this down so if you know how to do this you can actually get quite a lot of marks in your exam because one of the calculations where you have to calculate what we call a KC value can be 6 7 8 nine marks so it's one of those topics where if you know what you're doing you can get all of those marks if you don't know what you're doing you could lose all of those marks so it's very important to understand this topic from the beginning but basically it's all about a reversible reaction so reactions that have a double arrow like this you get taught A New Concept called KC which I've mentioned you need to know lat's principle all of these stuff will be taught to you I do recommend reading up on it in your textbook to get familiar with the concepts of course I'll be posting videos on this so subscribe if you haven't already but how can you prepare for this one because it's a relatively new topic what you can do once again is go over stok geometry which is also called the quantitative aspects of chemical change again I have videos on it it's all about practice you have to practice you have to perfect this because if you can do this then learning the new kind of Concepts and topics within this section will be easy but you can see my guide if you need more help on that and then last but definitely not least we have another chemistry topic called acids and bases now this is a topic that has come up in grade 11 chemistry already you should have already learned a lot of the acid and bases topic from in grade 11 we built upon that so a lot of the things listed in this document like Define acids and bases according to the arenius and Larry Bron theories you should have done that in grade 11 distinguish between strong and weak acids or bases and concentrate or dilute acids or bases you should have done that conjugate acid bases pairs you should have done that most of these things should have been done already including calculations based on titration reactions using this formula if you are familiar with this already then obviously the most obvious way to prepare for this topic is to go over the stuff because again the stuff you learned in grade 11 will be asked again in grade 12 we just build on it so there's more stuff most people do not learn how to calculate pH in grade 11 although some schools teach it like I teach it at the school where I work in grade 11 so that when we get some a trick my Learners already familiar with it so there's not a lot of new work so knowing how to calculate the pH using this formula of strong assets and strong bases you learn about KW this helps you calculate the pH of a base and all of those things so again this is a topic that you can prepare by going over over grade 11 acids and bases another way you can prepare for it is by going over again stochiometry so as you can see stomry is very important you need to go over that stuff if you've forgotten how to do it now again nice thing about this document the free document that you can download is that I have a data sheet for all of these cheem um chemistry sections so I've kind of combined all the formulas onto one page for you and remember not all of this is given on your actual formula sheet in your metric exams like for example this one over here rates of reaction this isn't given on your formula sheet like I explained earlier you need to know where this comes from you need to just know when to use it and how to use it and these things this isometry and I said these can be used in all three chemistry sections you need to practice this and this is acids and bases right now the last thing that you can find in this document is information about your prelim exams so these are your mark exams or the exams that you do in term fre and your final exams so it gives you a mark breakdown what you can expect for each section and how much it counts more or less in your final exams now again just a reminder you can get this document on my website so please go check that out if you haven't done so yet and subscribe because I will be doing more videos on each of these topics this term and I'll be doing exam practice videos so you don't want to miss that I will see you in videos very soon in the future bye everyone