Full transcript of “Grade 10 SCIENCE | Quarter 4 Module 6 | Types of Chemical Reactions”. Click a timestamp to open the video at that moment. Need another video? Use the YouTube transcript generator.
0:00 hello students today i will be discussing the different types of chemical reactions we will be focusing on the four basic types of chemical reactions and i will also be showing you the general form of each type of chemical reaction as well as different examples of each type so he explained corinthians type of chemical reaction so without further ado let's start so the first type of a chemical reaction is a synthesis or a combination reaction so for the case of combination reactions you can have two or more reactants and only one product
0:47 so parang nityan this is an analogy of a combination reaction this one is your first reactant and then this one is your other reactant and if you combine them that's why we call it combination reaction when we combine them is a product so what is the general form for a combination reaction the general form would be a plus b yields a b okay so i know a at chaka a and b here on the left are your reactants while a b here on the right would be your product
1:34 in the reactant side a can be an element and b can be a compound panna combinzilla compound parent but also it can also be two compounds so let's give an example an example of an element and a compound in a combination reaction would be this so how do we read that we have sodium plus chlorine gas yields sodium chloride if you will notice we have the same elements on the left
2:21 and the right side of our reaction we have sodium here we also have sodium here we have chlorine here on the left we also have chlorine here on the right so that means that the elements are conserved in a law of conservation so whatever you see on the left you will also see on the right but there will be rearrangements so in this case this one is an element plus this one it is a compound you combine them you will be having a compound okay now no combination
3:10 and they only have one product another example in this case this is composed of two compounds in the reactants side so we have ammonia and h3 plus hydrochloric acid that's your hcl these two are compounds if you combine them you will be getting nh4cl which is ammonium chloride
3:58 all right so let's go to the second type of reaction the second type of reaction is a decomposition reaction a decomposition reaction occurs when a single compound breaks down into two or more simpler products in short this is like the opposite or the reverse of a combination reaction so in what way this is an analogy kanina is a combination reaction we have one product in a decomposition reaction the clue here or the hint here is that you should have only one reactant
4:44 all right this is your reactant and it decomposed into two or more simpler products and you can either have a compound and an element or two compounds in your products what is the general form the general form would be reversed you have a b yields a plus b so examples paramus maintain the hanatin here you have
5:31 hydrogen peroxide h2o2 component channel aguax a reactant you have two or more products another example zinc carbonate yields zinc oxide and carbon dioxide again you have only one reactant
6:17 but you have two products if you will inspect closely also the nasi nabi natinka is a combination reaction you have the same elements on both sides of the reactions in this one you have hydrogen and oxygen you also have hydrogen and oxygen on the other side same goes with your second reaction you have zinc carbon and oxygen on both sides of the reaction so madeline la loca memorize nino are very familiar periodic table of elements now you may ask me mom why do some of your
7:03 compounds have numbers in front while others do not so some of the compounds and elements that i am presenting to you are part of balance equations some are not balanced so when we say balance the path same young number elements the right side so if you are not yet familiar with balancing equations i have another video for that parameters you can simply click that on top of this video what we are just discussing for this video is the format of the different
7:51 types of reactions so third type of reaction we have single displacement or single replacement reactions in some books it is called single displacement in some books single replacement parents displacement or single replacement one element replaces another element in a compound analogy so you have a compound you have an element after the reaction this element replaces this element
8:39 as cache displacement or replacement element there are qualifications for an element to be displaced activity series nevertheless since we are dealing with reactions we have an idea displaced reaction so what is the general form
9:24 a b plus x yields a x plus b c x pentatonic b d compound can example we have here two hcl that is hydrochloric acid plus zinc yields zinc chloride plus hydrogen gas hydrochloric acid is a compound
10:09 zinc is an element now zinc displaced or replaced hydrogen another example we have bromine plus potassium iodide so anena bromine potassium and iodine
10:56 capacity potassium iodide yields potassium bromide plus iodine zebra means plasma c iodine
11:49 now how is this different from what we call double displacement or replacement this is the last type of reaction that we will be discussing in this video so in a double displacement or replacement reaction it involves exchanging of ions to form new compounds analogy the general form would be a b plus x y
12:37 yields a x plus b y for you to understand further and we have this example usually the examples for this type of reaction are longer because it involves usually compounds all are compounds we have here barium chloride plus sodium sulfate yields barium sulfate plus sodium chloride anonymity
13:32 reactants similarly we have here potassium bromide plus silver nitrate yields potassium nitrate plus silver bromide silver nitrate potassium okay so that's all for the different types of reactions let's have a short
14:20 practice activity i have here some examples of reactions i want you to classify them whether they are combination reaction decomposition reaction single displacement or double displacement you can simply write the letters okay so to facilitate the activity you can pause this video and think about your answers before you proceed because i will be showing the answers later all right i'll give you five minutes [Music]
15:25 you [Music] okay so let's check your answers the first one this is a combination reaction second is a decomposition reaction the third one is a combination reaction
16:13 the fourth one is correct double displacement and the last one would be a combination reaction okay so that's all for today i hope that you have learned something from this video and you can share this with your friends or classmates see you next time bye
