0:00 o where is your attention? Your hero is here. Oh sorry, not your 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
0:47 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
1:34 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
2:19 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
3:06 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
3:51 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! see see Isn't it? So tell me to take a piece of paper and burn it. Two. What happens when you burn paper?
4:37 There will be combustion. Combustion means fire will occur. Is No? Chemical reactions might be 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 these 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
5:22 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
6:10 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
6:57 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.
7:44 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
8:31 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
9:17 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
10:03 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
10:49 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
11:34 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
12:23 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.
13:08 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 you for a Ferrari
13:55 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 Now why do we have to read these memories?
14:41 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
15:28 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
16:15 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
17:00 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
17:46 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
18:31 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 it first. This iron what should I put on this iron? of three I will apply multiplication. Yes and no. Here
19:18 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
20:04 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.
20:50 Give oxygen also. 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 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
21:37 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
22:22 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
23:11 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 go very well 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
23:58 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
24:46 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
25:35 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 be? 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
26:20 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
27:06 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?
27:52 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
28:38 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
29:24 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
30:11 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
30:58 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,
31:43 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 You are here, right? 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
32:28 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
33:14 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.
34:02 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
34:49 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
35:34 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.
36:20 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
37:06 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
37:53 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
38:38 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
39:26 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
40:12 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
40:59 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
41:44 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
42:30 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
43:16 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
44:03 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
44:48 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
45:35 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 so, 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
46:22 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
47:08 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
47:54 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
48:40 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
49:26 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
50:14 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
51:00 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?
51:45 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?
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