when you were younger did you enjoy Lego I know I did I loved Lego okay now in Lego um you've got different blocks you know you've got like a red block let's just try to draw the little Lego piece of here okay and by the way you are at the correct place we are going to be talking about science I just want to make it nice and easy for you okay this isn't like something like grade two um Lego building course okay then you get like green Lego blocks maybe so like that and let's do a blue Lego block okay so these are called Lego blocks okay um these are all called Lego blocks let's just say Lego Lego with me and my um when me and my friends back in um High School like in grade 12 if we were gonna you know we felt cool so if we were gonna go out for one evening we would all be chilling there and then once everyone was ready I'd be like yo yo yo Lego and then we would leave you get it Lego let's go okay that was terrible Okay so you should try that with some of your friends maybe they'll think you're super cool they'll be like whoa bro that was so cool what you just said like you can be like hey guys Lego and then you can be like yo yo you see what I just did there guys okay now don't do that it'll be terribly lame and I'm feeling really awkward and lame right now but let's carry on so we've got Lego Okay so we've got these Lego blocks now the equivalent of Lego blocks in chemistry or in real life would be atoms so this is an atom and this is a blue atom you'll see where I'm going you'll see where I'm going with this now and this is a green atom okay so in real life we use atoms so did you know that if you look at your hand right now your hand is made of Lego blocks but it's the life Lego blocks called atoms and it's thousands and millions and trillions and trillions and trillions of those little atoms that are all combined together to make you the person that you are so the basic building block of everything around you if you look at anything on your disk if you look at the calculator if you look at the everything if you look at the books around you they are built of atoms but they are so small that they are billions and trillions and trillions of atoms that make up everything around us okay so it's all about atoms so we know that atoms are the basic building blocks of everything that we have here on on like in in in existence so you cannot break an atom down any smaller just like you're not going to take a Lego block and then be able to break that down any smaller okay that is the basic of the Lego and these are the basics of all life okay now here we can say that we have now you get different types of atoms just like you get different Lego blocks here you can say we have a red Lego block here we can say we have a blue Lego block and here we can say we have a green Lego blocks you see how we have different Lego blocks where we get different types of atoms and guess what these are the different types of atoms that we get so we can say that this is a hydrogen atom for example and so it would look like that and then here you could say we have a for example you could say we have a nitrogen atom nitrogen atom and then here you can say uh we maybe have a carbon atom carbon atom okay here you would call these different things you would say that they are different colors here we say that we have different elements elements okay so these are called the elements and that's why this is called the periodic table of elements so remember though that the bigger the the basic thing though is still called an atom so this is just a hydrogen atom this is a nitrogen atom and this is a carbon atom but we get different types of atoms and that's where it's called elements so you get a hydrogen element a nitrogen element and a carbon element but they're all atoms at the end of the day just like we can say we have a red Lego block a blue Lego block and a green Lego block they're all Lego blocks but it's the different types okay I hope that makes sense so far I think it would because that's pretty easy to understand right I hope so so far you you find absolve it so we know now what atoms are and then the elements are just the different types that you get okay they're just the different types that you get but what's interesting about elements is that you could put a you could put for example go connect another little Lego block here or you could connect another little hydrogen together and would you say that this is still hydrogen yes it is so this whole structure is still going to be an element and you could say that there are two atoms over here so there's this is still the hydrogen element even though there's more than one this is still the it's one type so this would still be a hydrogen element okay so an element can have more than one atom but it must be the same type of atom it mustn't be different for to be called an element it cannot so so this is an element but if I connect another one of the same type then this and this is still nitrogen remember then this is still called an element but as soon as I connect a different type of substance like let's say I put a hydrogen over here then you cannot say that this is an element this is not an element okay so an element must be the same type of Lego block or the same type of atom for example it can be by itself like this one or it can have more than one it could even have 500 it doesn't matter so now you know what elements are okay I'm now going to talk about molecules and we will come back to compounds so what is a molecule a molecule is whenever you have two or more atoms okay so is this a molecule yes we've got two or more atoms we've got two atoms over there is this a molecule yes we've got two or more atoms is this a molecule let's have a look here um if you put let's say we put hydrogen and nitrogen that is a molecule because we said a molecule has two or more atoms they can be totally different elements or they can be the same it doesn't matter so now I'm going to start using different ones so you could have for example and I'm just going to use like one color okay so don't get confused with that now so H and c o is that a is that a molecule yes it's got two or more what about what about something like um h o and H is that a molecule yes we said that as long as it has two or more of these atoms then it is a molecule it doesn't matter if they are the same or different so for example is this an at I mean is this a molecule well no because it has to have two or more what about this one uh n and another n is that a molecule yes because we said it must have two or more uh what about what about h and F is that a molecule yes because we said two or more and then what about um oxygen with another with a carbon and another oxygen is that a molecule yes because it's two or more so so molecules must just have two or more atoms okay so molecule must have two or more atoms are connected or let's say bonded together they must be touching each other they must be bonded together right so let me give you a little quiz just to make sure that you're understanding so far so is this over here could we call this an element yes because they are touching I should make them touch over there they this is an element because it's the same type it's nitrogen and another nitrogen so as long as it's the same type we can call it an element is this an element yes that's a carbon element um is this an element let's do that no this is not an element this is not an element because we said an element must have the same type of um it must have the same element and remember these are the elements but it can have more than one so here we can have so this is yes this is an element yes it is an element it can have one it can have two it could have let's say we have three oxygens connected is that an element yes as long as it's the same element as long as it's the same thing on the periodic table then it is called an element so yes this is an element okay now is this a molecule is this a molecule well we said that a molecule must have two or more atoms are there two or more atoms here yes so this is a molecule okay is this a is this a molecule yes it's got two or more so that's a molecule is this a molecule no because it does not have two or more so we'll say no over there and then is this a molecule yes because it has two or more so let's just say molecule yes okay so we're going to do another little quiz now I'm going to make like a nice table for you and then we'll go on to compounds so here we go now here we're going to do three or no for example sorry then I'll talk to you about compounds and then we'll be done and compounds is really easy and then we'll do like a little quiz at the end and then we'll really have a good idea of how all this stuff works okay so the first one is it's an element well remember an element has to have the same type of element now this is not the same type of element here we have hydrogen here we have hydrogen but then we have oxygen so it's not the same element that they're using so this is not an element is it a molecule well a molecule must have two or more atoms here we have three so it's definitely a molecule yes okay here we have is this an element yes we're just using one type of element that's carbon is it a molecule no because a molecule must have two or more atoms here we have only nitrogen so is that an element yes because you're using the same type so that's correct they said an element must use the same element and then here is it a molecule yes because a molecule must just have two or more atoms bonded together and then here we have aluminum is that an element yes because aluminum is something on the periodic table and we're only using one type which is good and then is it a molecule no because a molecule must have two or more okay now we're going to start speaking about compounds okay so let me give you the definition of a compound it's two or more now that sounds like a molecule doesn't it but it must be two or more difference elements bonded ah so if I gave you for example this two nitrogens bonded together is that a molecule yes we said a molecule is two or more but is it a compound is this a compound well let's see what it is a compound is two or more different these are not different those are both nitrogen so is this a compound no let's say about this one uh let's do a hydrogen atom is that a compound is this a compound over here no because it says that a compound must be two or more different elements bonded together so it's not it's not a compound so we'll say here no what about uh this one okay so is this a compound well it says that it must be two or more okay so we have got two or more different elements well yes we've got a different element look at that we've got an oxygen and a hydrogen so it's not only hydrogen um it's a hydrogen and oxygen so the yes this is a compound let's do another example let's do carbon with oxygen so is this a compound what a compound must be two or more different elements so these are different yes that's perfect now we're going to go do a little quiz um so uh yeah so this one is a compound why because it's two or more and they are different the ones are carbon the ones are oxygen so this is a compound now we're going to go do a quiz and we're going to go through everything that we've gone through in this lesson and it's going to be a nice little summary for you to make sure you understand all the differences here is our final example so here's our first one it says it's just an atom of carbon so is that an element now remember an element it only has one type of element from the periodic table so this is just using carbon so is this an element yes is it a molecule well a molecule has two or more atoms bonded together this is only one atom so that's not a molecule and a compound is two or more different atoms so different elements bonded together so it's not a compound okay let's start with this one is it an element well it's got two nitrogens and an element says that it must only have one type of element from the periodic table this is an element because it's only using nitrogen is it a molecule well it has to be two or more atoms so here we have two or more atoms that's perfect so it is a molecule is it a compound well a compound is two or more different atoms or different elements these are the same so it's not a compound okay what about this one over here so is it an element well an element only has one type of element this one has hydrogen and oxygen so it's not an element is it a molecule or a molecule has two or more atoms bonded together this one has more than two or two it has two or more so it is is it a compound well a compound has two or more different atoms this is two or more and they are different they're not only one type so it is a compound and I know that that's a question that's been on your mind can something be a molecule and a compound yes of course now here we've got aluminum or as the Americans would say aluminum um so is that an element well an element only has one type of element yes that's just using aluminum is it a molecule where molecule has two or more atoms this is only one atom and then a compound has two or more so it's not a compound and so there we have it I hope that from watching this You Now understand the differences of what elements mean what is a molecule what is an atom what is a compound I hope that that makes more sense