I'm currently in Japan. I like football, I like sports, I like cats. Yeah. Okay. So you are twelve and you're in Japan, but you come from Hong Kong. Is that right, Andy? Yeah. And what school do you go to? What school do you go to in Hong Kong? Yes. And do they use years or are you in grades? So what year are you in? Andy? Seven. You're in year seven. Tell me what you've been doing in science. Felt t like burns and burners. And so okay, so you've just done the introduction to science and lab safety and all of the equipment. Yeah. Yeah. Okay, brilliant. Now I think we are waiting for somebody else to join us. We're waiting for Ethan. So we'll just give Ethan a little bit longer to join us. We're going to start on a year seven topic. This is called states of matter, solids, liquids and gases. Now, have you studied this before? No. Oh, that's brilliant. Let's make a start then. Here we go. So can you read these for me, Andy? Learning objectives to understand the matter can exit every state, success criteria to define, define matter to state the free. State of matter to compare and contrast to re state of matter. Okay, brilliant. So hopefully if we work quickly, we're going to get two lessons done in one because there's not actually very much to learn in this first one. So we'll see how we get on. So it says what is matter? And it states that everything is made up of matter. How would you describe matter? How would you describe it? Oh, no. Okay, that's what we're going to think about first. So what is matter and how do we know that it exists? Well, if we hold a pencil, we know that it exists because we feel it. But we can't feel the air, can we? We can't feel the air. How do we know it's there? We can't see it? No, because yes, invisible. We can. Yeah, we can. Yeah, that's we can feel it when the wind blows, but when the wind's not blowing, we can't feel anything. So how do we know that it exists? Well, matter. Everything is made up of matter. Everything that is solid, everything that is liquid, everything that is gas on our planet. And it takes up space, volume. So your desk is made of matter and your pencil and you. It also has MaaS. So there's actually five states of matter, and you'll learn about those when you are a bit older. But at the moment, we only need to know about three. So what do you think the next two are? Good. Yeah. What's missing there? Solid, liquid? Air is an example of this one. It. Begins with A G. Could it be? Yeah, there's oxygen in the air. You're right. But is oxygen a solid gas? Yep, you got it. Gas. Good. Let's click there. We are. So matter can be a solid, a liquid or a gas. So I don't need you to write this, Andy. You can just tell me. And you're not in your classroom, so you'll have to do it in the room that you are in. So look around. Tell me, three solids. Yeah, pencil. Oh, what else? You don't have to get them. Yeah. Oh Yeah. You don't have to show me. You can just tell me. But that's a good one. Pencil football. Yeah. Like the water. Yep. That's a liquid. So you've done three solids. You've done one liquid. Can you do two more liquids? Liquid? Yeah. My mom's tea. Yeah, that's good. Have one. Yeah. The water in the tap. And there's also liquid in your body. Your blood. Your blood is liquid, isn't it? Now we can't, we can't see it, but we know it's inside you. Now, what about gases? Inside the ball. There go, Oh Yeah, Yeah inside the ball. Wis your drink a fizzy drink or is it a still drink? Is there any bubbles? So lemonade is not a fuzzy drink from shakshare. Not fizzy. If it was fizzy, there would have been bubbles of gas in your drink. So we've got a gas inside the football. We have got gas latwo footballs in the air. Okay, gas inside two footballs. We've got gas in the air. Do you think air is made up of just one gas? No, no. Lots of gases in the air. So there we are. We've definitely done three. Okay? We don't need to do that. That's fine. So how is a solid different from a liquid or a gas? We're going to watch a quick video to help us with that. So how is a solid different from a liquid or a gas? I'm Dr. Jeff finaker, and today we'll explore the science behind the properties of matter. Can you hear that? Okay. Is it loud enough? 来来来。Off one of these gas canisters is sohexafluoride. The other is helium, but we don't know which is which. Let's test them. I know that helium is what they used to make party balloons flow. That's right. Izzhelium is a gas that's less dense than air, so it rises up. How something rises or sinks is related to a property of matter called density. Helium is less dense than air, so it should float. And sulfur hexfluoride is more dense, so it should sink. Let's fill these two balloons with the gases and compare their density. 32. So we are talking about a property called density. And density tells us whether something's going to float or sink. So if it is dense, it will sink. If it is less dense, it will float. See that the pink one's more dense, so it must be the sofa. Hexfloor, Yeah. So when you see party balloons, they are filled with a gas which is less dense. And this gas, it's called Yeah helium. What would happen if we blow the balloons up just with our breath? So just with air, do they float or Dioso? Yeah, well, they will. Yeah, they don't, do they? They don't really float. If we let go, the balloon will fall to the floor. So air is less dense than the gas helium. Great. Let's put some sulfur hexafluoride into the tank over here. Whoa, that's kind of cool. So what happens if sulfur hexafloride gets in the boat? Not so cool, I know, isn't it? Now it's making it sing. Sulfur hexafloride is heavier than air, so pouring it into our little boat makes it heaer. So it's heavier than air. It's denser than air sink. Hey, kids, you want to watch this whole episode and more. Okay, so that told us about a property called density. So let's think about the other properties of solids, liquids and gases. So we're thinking about things like hard, soft, can flow and invisible. So tell me what solids are like. Like you can touch it, you can fuel it. Yeah like liquid, like wet, like. Like like weand like gas is like like you can't really feel it if you don't cry. Okay. So we can feel solids and we can feel liquids, but we can't feel gases. We can, but it's it's I no, it's not like it's everywhere. Like it's not hot. It's sort like soft. It's it's it's soft, but like it's like it's like nothing. Yeah, it's difficult. Feel can Yeah unless it's very windy and then you can feel Yeah like it's there, it's there, but like it's not there. Yeah, absolutely. Now let's think about some other properties. So what does it feel like? What about what does it look like where you've talked about gases are quite often invisible. Are they always invisible? No. Like smoke? Yeah, absolutely. So usually, but not always invisible. Now what about squash it? So can you squash a solid. Yes, Yeah. Now that's because that's a solid with a gas inside. But what about this pencil? Can I squash this pencil? Yeah, no. Can I squash this jar of cream? No. So solids, we can't usually squash them very easily. But what about a sponge? Can you squash a sponge? Yeah, but there's air inside. Exactly. Yeah. So if a solid has got air inside, like the sponge or like your cup, then we can squash it, but otherwise they're quite hard to squash. What about liquids? Can we squash a liquid? Yeah, water. Balon, can you squash it though? Are you actually squashing the liquid? No, just moving around. What about a gas? Can we squash a gas? Oh, no. Right. What about pouring? Let's talk about that one then. So can we pour a solid. Honey is that solid, though. Flour you can pour a solid if it's made up of little grains. Yeah, very good, like sand. But each individual grain of sand or of flour, you couldn't pthat, could you? What about liquid? Can we pour liquids? Yeah, Yeah, definitely. So let's have a look at these. Oh my goodness. You know what, Andy? I have got a horrible storm going on outside with heavy, heavy rain and hail stones. What's your weather like? I'm in the uk. What's your weather like in Japan? We're in the uk. I am near Manchester. Oh, I'm wearing Manchester. Oh, let's have a look. Man City. Oh, my goodness, my husband supports Man City. I bought five man sidishirts in a week. Japan. I'm and what's the what's the winter like? Is it warm? Like normal? Like cold? Like good? Oh, Yeah. Okay. So no rain. That's nice. Okay, let's go back to this. I was just a bit distracted there by that crazy storm going on outside. Had to turn my volume. Actually, I bought four Man City shirts and one psg shirts and won't you'll see. But right, let's read these. And so properties of solids. Property have a fixed shaped, cannot be squashed, compressed, cannot afloparticular, cannot move, but can vibrate on the spot. Now don't worry too much if you're not sure what particles means, we will come onto that next. So solids have a fixed shape. What's wrong? I saw something on like a science experiment. It says like they put something on it for like 100 or something years and it like it like it's a solid. Like there there was like a scientist, I think, who died before the like dream experiment, like it's experiment still going. Like it's like a solid putting on it. The thing that like the experiment was about, is it a solid or liquid? And then it's a solid like every 70 years, like a drop, one drop off. Like the solid. Oh, so did it start to sink? I saw it on the YouTube story. Like YouTube video. Yeah. Did it start to sink into solid every 70 years? Like did one drop? Oh, how strange. Oh, that sounds like an interesting video. So a solid, very hard, I E. My pencil has got a fixed shape. This will not change shape on its own, Andy, unless I get a hammer and squash it, or unless I get a saw and start to cut it. Okay, so solid you don't need it. Clear shape. You can just all snap it, but you have to do something to make it change shape. Yeah solids cannot be easily squashed or compressed and they can flow. Now, remember, you talked about the grains of sand, but each individual grain cannot flow. And the particles we will come on to next, right? Liquids. Read this. What Andy? Particles are like the same in the air, like dust. Yeah they make up the air. That's right. Read the next one. Proper key point, liquids, no fixed shape takes the shape of containers, cannot be squashed, compressed, can flow. Right, let's look at each of these. So if you pour your cup of tea into this shape cup, it will take the shape of the cup. But your mums cup shape is a little bit different and her tea takes the shape of that cup. So liquids will take the shape of whatever you pour them into. They cannot be squashed, compressed, and they can. Gases, we can't even put a gas into a container. Can't wait, because if I try and put air in my cup, itjust disappear into the room. So unless we put a lid on it, we can't even trap gas in a container. So it doesn't take the shape. It just spreads out everywhere. Now, gases can be squashed or compressed. Have you ever seen when somebody is in hospital and they need oxygen, they can connect a face mask up to an oxygen tank? Have you ever seen that? Now let's show you a picture of a tank of I've got a question. Yeah. What do you watch? Football. I don't know why my husband does, but I do, right? Have a look here. Yeah. And you see in the chat box there, can you see where I've put a picture? Don't go. Look, the same scuver diving. Yeah, exactly. That's the same thing. Put on your Masket and just that's the same thing. So we can squash a gas and we can put it into a container. And this is pressurized. So youhave to be very careful that you didn't puncture it, because it can go bang. Because the gas has been squash so much, the particles want to escape and a gas can flow. So when I'm doing this with my hands, I am pushing the air particles and they are flowing. I can't see it or feel it, but it's happening. Okay. Let's go on to our worksheets for this first part. So just a little bit of revision to check that you understand everything so far. Okay, first one, Andy, you can just do an s, an l or A G. So we want the state of matter before and after. So making ice cubes, you start with a liquid and then you get a solid. Once the ice is cuyeah, you've got some in there and there are solid. Yeah do the next one. Then the wax of a lit candle. Solid Oh, like I can't write. You can't write. What are you on? Are you on an iPad? Yeah. Have you got a tool bar along the side? No. If you want to just click on your I think you gave me permission. No, I don't need to give you. Oh, yes, you're right, Andy. Thank you for that. So I had given you permission. Oh, change your color. That's it. Brilliant. Excellent. Yeah, no, you were White at first. That's perfect. Yeah, all know. Yeah, Yeah. Good. What? Liquid? Liquid. Oh, fault. Yeah, mine. No, mine. Yeah, that's it. Solid, liquid. Puding pudle pudle not not a pudding. Do you know what a puddle is? Hungry? Yeah. Like the the water. Like after we used to jump in them. Yeah Yeah. We're too hungry. You're hungry. Yeah, I ate allike 5:30 and now it's 924. See you ready for some more. Okay, next one, no huddle. Huddle liquid, yes. Liquid soliperfect or correct? Right. Let's see if you could do this one now. So you are matching the state of matter to its properties. Some will match with more than one state. So you can have more than one line. No. Flow, Oh, Oh, my God. Good, I know. Can be pressed, but can water become pressed? No, okay, not easily. Only a tiny, tiny bit. Okay, good fixed, fixed shape. Now be careful with that one. Gas does not have air. Next shape Oh, my argument, you. I don't know what this shape mean. It means you can't change it shape unless you do something to it. So like this pencil, it's going to stay this shape all day, and it's not going to change. That's it. Good. C right now, remember, a liquid and gas can flow, so they can both flow. A solid cannot flow. A solid has got a fixed shape. Liquid takes the shape of the container, but not gas because it escapes and can be compressed. Is gas cannot be compressed. Is liquid and solid? There we are. You see those ones, Andy? Hey, happy with that. Right? We don't need to do this one. Let's go on to our next point now. So now we're going to look at the particle model. Now what did you tell me about particles? What did you already know? 好吃不嗯。Like dust ly. What's just St like little bits like sand fully. Okay. So dust and sand are particles. Anything else baso things like salt and sugar, things like that. Yeah. So they're all particles. All right. Do you want to read this slide, Andy? Learning objectives to learn how Cal particles partiles are arranged in the free state of matter to identify the arrangement of particles in each state of matter, to define density, to link, to link the arrangement of particles in each state of matter to their properties. So what states of matter can you see in this picture? Water, air, right? So water, remember, it's got to be liquid gas, liquid gas and solid, right? So the liquid is the water. Where's the gas? Like here? Like the air? Yeah, but you're circling the clouds. A clouds gas. Yeah. Well, they're both in mixture of both, aren't they? There's actually some liquid in the clouds that e raindrop. Yeah, absolutely. So we'll have liquid in the water, some liquid in the clouds, gas in the air. Where's the solids? College ds, like this mountain, these bushes, the sand, probably the rocks like that. Yeah, Yeah, absolutely good. So we have found out that everything is made up of matter. And matter is any substance that has got MaaS and takes up space called volume, solid liquids and gases. Now you said that things that are made of little bits, like salt and flour and sand, our particles, and you're right, but also if we zoom in to everything else, like if we zoom in my eraser, my rubber, this is also made of particles. If we zoom into this plastic sweet wrapper, this is also made of particles. And when we draw these particles, we just use circles just because it's easier to draw them. So this is how the particles are arranged. So if we zoom in with a really, really, really powerful microscope to this pencil, we will see that it is made up of particles. So like technically, there's gas in the, like in the, if there's spaces in the grain of the wood, Yeah if you've got a wooden table and there's little spaces therebe some air in there, Yeah. And if you keep on zooming in, your table is made of particles, which are balls like this. Let's watch the video. Correct. All matter is made up of tiny particles. And in all matter, these particles move. How they move depends on the state the matter is in. In solids such as ice, the particles are tightly packed together in a fixed, orderly arrangement. Are they moving vibrate in place? But can you see them moving, not move freely from their positions? Did you see that, Andy? Were they moving? Yeah. Yeah. So this is the Yeah just a little bit. We say that they are vibrating. So it's like they're just wiggling on the spot. So these are the particles in a solid. We need to notice that they are arranged regularly. They are in a pattern. Can you see it's a regular repeating pattern. They are close together and they are moving a tiny, tiny bit this close. Packing and restricted movement result in solids maintaining a definite shape and volume. That's why it is not easy to change the shape of a solid, because the particles are so close. In liquids like water, the particles are still close together, but not in a fixed arrangement. So they are not in a fixed pattern. They are in a random pattern. They're just all over the place. There's bigger gaps between them. Are they all far apart? Andy, look at that picture. Are all of the particles far apart? Some of them are touching, aren't they? Some of them are close together and look at how they they can and slide past each other, which allows liquids to flofaster, isn't it? Yeah. So this is why liquids flow, because they can move past each other of their container while maintaining a constant volume. The particles in a liquid move more freely than in a solid, which is why liquids can flow in gases such as water vapor. The particles are far apart, and Oh my goodness, so much further apart, moving quickly. And they even sometimes bump into each other freely in all directions. This high speed random movement allows gases to fill the entire volume of their container. And that's why they won't gases won't stay in a container because they're moving so quickly. They're just going to escape from can we see the gas when we have microscope? Could you see the particle? It would have to be a very, very powerful microscope, not one that you would have at school. It would have to be a very expensive microscope. So like because they're so small, you actually see it? Yeah, but they're very, very small. Space gases do not have a definite shape or volume. They spread out to fill the shape and volume of their container. The difference in particle movement across the three states of matter, solid, liquid and gas explains the unique properties of each state, including their shape, volume and how they respond to changes in temperature and pressure. Okay, so you need to be able to draw a picture like this yourself, and you need to be able to explain how the particles are arranged. So we use circles to represent the particles, and this is what we call a model, just to make things easier to understand. So how did we come about this model? Where did it start from? So Democritus was a Greek philosopher, and over nearly two and a half thousand years ago, he was the first person to decide that all matter is made up of particles. So that was very clever of him all of that time ago. He thought that if you kept cutting things up smaller and smaller and smaller and smaller, you get to a point where you couldn't cut any further. And he was right. And that's where we get the word atom from, from atomas, which is the Greek word for indisible, meaning you can't divide it any further. Be heard of atom, Andy, if you heard of the word atom, Yeah. Now when we're talking about particles, we mean atoms. Sometimes you'll also hear them called molecules. So particle we mean atoms and molecules it's just the same thing. And then more scientists have carried on researching this. So John Dalton, discover that everything is made up of atoms, and you cannot create or destroy atoms, and they cannot be split. I saw a YouTube video that says if you put apple in a container long enough, it will turn into like atom. Yeah because there were atles already there. What do you mean? They were already there in the it says, like if you put an apple into a container with like no air or something and then like wait thousands of thousands of years, it will turn into like a pile of dust and then it says, like and like after like thousanof thousand ands of years, it can be anything in that box. Yeah. So what that means is, you know, universe, now we have already got millions and millions of atoms, and we can't make any new ones. They're just going to change into different things. So when an apple rots away, the atoms might become a plant, or the atoms might become a worm in the soil. So the atoms are just moving possible things. Is it possible to like the atom but became a Nintendo switch? Yeah, in the future. So you might have atoms inside you, Andy, that used to be in a dinosaur. Oh my God. Yeah, that's weird, isn't it? Let's think about what this word density means. Now they showed this in the video with those balloons. Remember, one of them was dense and it would sink and the other was less dense and it would float. So if we are thinking about packing your suitcase for your holiday, if you cram loads of stuff in your suitcase, it will be dense. But if the suitcase right there, Yeah is it full of things? If you left your suitcase half empty, your suitcase would be less dense. So density is the MaaS in a particular volume. It's like the weight Yeah, it's a bit like that. Yeah, but it's weight for a certain size. So does this suitcase have a high or a low density? Probably stuff. So this is going to sinisn't it. But if we had an empty suitcase, it might float, it would have a lower density. So Yeah, exactly. So which of these has got a high density? The first one Yeah because there's so many particles. Yeah so we are dealing with exactly the same size, aren't we? So we're dealing with the same square here. Just going to replicate that, right? So we have Oh, I just bathed up and get rid of that. So we have got the same volume. But the number of particles that we have in that volume is different. So this one, the solid is high density. And then when we get to the gas, it is a low density. And we could think of that like these three pictures. So look at these pictures. Tell me which one is like a solid? If the people are particles, which one is like a solid and why? Yeah. Why is that like a solid? Everybody ain't moving. Are they moving? He looks like he's scratching his nose. Like they're moving a bit. Like that's not that much. Yeah, just a tiny bit. Yeah, you're right. Like solids vibrating the particles, right? How else is that like particles in a solid? Because like solid is like made out of like a law of like. Particles Yeah use the word particles like a line ball Yeah or like a long ball. And then like like the kids sitting down for assembly is like really perfect and like there's a lot and the data doesn't move that much. Yeah, they're in lines, aren't they? So they're in a regular pattern. They're in lines. Are they close together, off, far apart, together, together? Yeabsolutely, which picture is more like a liquid then? What can you repeat? Which picture is more like a liquid? If we say this one's like a solid, which is like a liquid? Third one. Yeah talk to me about the middle one and tell me why that is like a gas. Yeah like they're playing field hockey, I think. Yeah and like they're moving around. You cannot predict where they're gonna go. They fill up the space and Yeah, that's really good. So they're using all of the space, it's random, they're moving quickly and they might bump into each other as well. That could possibly happen, couldn't it? Yeah. Okay. And then let's just read this last one for liquid. So read the blue box. Moving in corridors is like a liquid because the particles are more dense packed than a gas and are moving around in small groups. Yeah, brilliant. So the arrangement of the particles. So those three diagrams, they determine the properties of the solids, liquids and gases that we talked about on the first PowerPoint. So let's read this. So in a solid, the particles are tightly packed. So the solid has a high density and cannot be squash. So can you see there's nowhere for those particles to go so we can't squash them. Can you see that, Andy? Can you see why that can't be squashed? Good. The particles also don't move around very much, and there's actually forces between them which are holding them in place. And that's why they can't be poured. That's why they don't. Right, read this one. Brobroad of liquid. In a liquid, the particles are close together. As a result, they cannot be squashed from breast or hardly. So we say they can't be squashed because it's really, really difficult to squash them. You could a tiny bit, but it's really, really hard. So we say that they can't. The particles can move around. So the forces between the particles are weaker. So they can move around. They can move over each other. And that's why they can be pooured. They can flow. And then a gas far apart, and you can see how we could squash that. So when we're putting oxygen into one of those tanks, like I showed you for diving, remember, the particles have been pushed closer together, Andy, they have been squashed. So you can get lots of oxygen into that tank. So if you were to turn the tap on that tank, what would happen? What would you hear? Like Yeah. Youhear it ghost, wouldn't you? Yeah. Yeah. Because it has been squashed in there and it really wants to escape. So the forces between these particles in a gas are very, very weak, and that's why they can spread apart. Right before we go on to gas pressure, let's have a look at our worksheet. Raise, use the bathroom. Of course you can. Off you go. Hello, hi. Okay, let's start with this worksheet. Actually, before part of that, I'm going to get you to do something. Before we do that, I would like you to draw. I'm going to do three boxes. And I'm going to get you to draw. Solid, liquid and a gas. I'll do you some particles that you can move. Don't worry about filling the whole box with solids because that will take too long. So here's some particles for you. I'll duplicate lots of them and you can move them, remove them, you can move them. You should have a select tool and you have you got it. That's it. So just do a couple of rows for the solid. You don't need to fill the whole box. Good it move. We'll get rid of that one. Eat today. He weghs a bang. Done. Okay, next one. Oh, I dismade ed one bigger than as well. I'm just going to start the next row. Oh, what did I do? Sometimes rather than moving, they're changing size arenthey, okay? Right now, I'll let you cook, get, do some gas now. You go now some particles for you for the gas. That's probably enough for the gases and it don't put too many more in because itstart to look Yeah start to look like a liquid. I'm gonna get rid of one. Now tell me about them. So well done a lady. Drarings a lot. So now tell me. Tell me about the arrangement of the particles in a solid. So basically this one so basically this one is like crack together. So like it's all what did I do? I took the whole thing off. I was grfor example. I raput this back, never mind. So like basic needs, like black, like this thing, you don't want to fall off, but really packed, like hard and stuff. And this one, the liquid. I don't have any licould left. So I basically the liquid is more like it's like moving around like that, like here moving around in groups probably and there's not that many, but like not as many as a solid, but still a lot. Yeah. Okay. And the gas then the last one, the gas is like a little bit of like last one particles, I think, or gas yeparticles particles, right? Like it's like little bits of stuff and when like and they move around, like to fill up it, fill little. Brilliant. So you've come up with some very good ideas there. So remember, they're all particles in a solid. They are close together and they are arranged regularly. Now what's the opposite word of regular arrangement where they're not in rows all the same? Do you remember the other word I use beginning with R? Meaning not regular all over the place, random and brilliant. So liquids and gases, the arrangement is random. Now we can do little lines. You'll see these sometimes. So sometimes you'll see little lines like this. Oh, that was too close together. Let me rub that out. So you will say small lines like that to show that these are vibrating. Now to show the liquids particles are moving faster, we will have bigger lines. And then on the gas. Even bigger. And this shows that they are moving. So you might see that on some of the diagrams. Which one is the least dense? Least dense densed? Probably the gas. Yeah because the particles are so far apart and most dense. Now remember, this should be filled, shouldn't it? Most dense? Yeah, yes, which one more is most? Denyep. Which one? This is least dense? This one. So which one is most dense? Most dense because you can see just solid. Yeah. So if you imagine that was completely filled, there is way more particles in the same volume because our squares are the same size. Why are you doing that? Don't do that. Okay. On the ground somewhere from so let's just spend the last two minutes doing a couple of these. So which one is the solid? Solithird one. Okay. So we can put three. Which one is the liquid? The liquid, of course, this one, and that means the gas is number two now false? Andy read a. In a solid, the particles are close together. Screw liquid can be squished. Both solid liquid and gas can be bored low. Both se, Yeah. Why is that one false? It, let me try to pour this glass down. Even though you can pour sand, you can't pour one grain of sand. Okay. D. D. The particles in a gas are free to move around in all directions. Solid and liquid are dense. They have a lot of particles in small volumes. I'm not good with English. Like so this one is compared to gases, solids and liquids are dense. So if we pour a liquid, it falls down, doesn't it? It doesn't float up. Yeah. And what about air problem in space? But well, it would in space. Yeah, no. Like my friend, my best friend Justin, he's smarter than me. Like he's really got a science and like Spanish and stuff and like he he told me zero gravity doesn't exist. He said, zero gravity is just rotating the world in a really high speed. Is that well, partly it's not quite as simple as that. He said, like technically, it's so ravity doesn't as it exist because it's just traveling, like dropping from a height, like traveling the world around and around and around in in a in a really high speed, right? Let's just do f where we run out of time, finish this last one. Oh Yeah that Yeah gases can be squashed, compressed easily because they have spaces between their particles, right? Well, it's done brilliant. Well, it's been lovely meeting you and dy. I will write some YouTube feedback for your mum and I will send that. Okay, anuntie, bye bye. Have an amazing day. Thank you. Angitake care.