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2.6

## National STEM Learning Centre

Skip to 0 minutes and 8 secondsSPEAKER 1: What misconceptions can you spot?

Skip to 0 minutes and 10 secondsSPEAKER 2: OK then year four. So you have got a selection of different things here. You need to classify them and see which you think is a solid, liquid, or gas. Which belongs in which group? So have a look at each of the things and see what you think.

Skip to 0 minutes and 28 secondsSPEAKER 2: Yeah, you can stand up. Have a look.

Skip to 0 minutes and 31 secondsEDWARD: So Coca-Cola is probably going to be in the liquid because you can drink it.

Skip to 0 minutes and 38 secondsFRASER: And jelly is a liquid and a solid kind of. Because if it was originally made from liquid, and then turned into like a solid, then it could be both of them.

Skip to 0 minutes and 54 secondsFRASER: Those cubes-- that's solid. Those cubes-- that's solid.

Skip to 1 minute and 1 secondFRASER: Because you can't drink them. [LAUGHTER] They're not floating around like gas, or-- because you can hold that, and you can bang it, and it'll make like a sound. So it's also plastic. So it's solid.

Skip to 1 minute and 19 secondsEDWARD: And that should go in liquid.

Skip to 1 minute and 23 secondsSPEAKER 2: How'd you know? There, have a good look at it. Have to look at it properly. [INTERPOSING VOICES] Yeah, open it. [INTERPOSING VOICES]

Skip to 1 minute and 29 secondsEVY: Then if we pour it a little--

Skip to 1 minute and 47 secondsEVY: But it looks like a little bit-- it looks a little bit solid as well.

Skip to 1 minute and 57 secondsSPEAKER 2: What's making you think that, Evy?

Skip to 1 minute and 59 secondsEVY: Because sometimes it didn't move.

Skip to 2 minutes and 4 secondsSPEAKER 8: That is very squidgy, but it's kind of solid as well. Because it states in its place.

Skip to 2 minutes and 9 secondsEDWARD: It feels a bit wet though.

Skip to 2 minutes and 11 secondsSPEAKER 2: Does it? Why don't you all have a feel, and then touch your fingers.

Skip to 2 minutes and 24 secondsSPEAKER 8: But it also stays in its place.

Skip to 2 minutes and 32 secondsEVY: I think we should put this one in not sure.

Skip to 2 minutes and 36 secondsSPEAKER 2: What about the sand then? You've got that in not sure. Where do we think that one should go?

Skip to 2 minutes and 41 secondsFRASER: I think it's a liquid.

Skip to 2 minutes and 48 secondsBecause it's a liquid because you can pour it, and normally solids won't do that. So it's probably a liquid.

Skip to 3 minutes and 9 secondsSPEAKER 2: You think it's a liquid, Edward? Why do you think that one is a liquid?

Skip to 3 minutes and 18 secondsEVY: I think it's a liquid as well because it starts off as a gelatin. And that's a bit liquidy.

Skip to 3 minutes and 28 secondsSPEAKER 2: OK. What do you have to add to it? Do you know how you make it?

Skip to 3 minutes and 33 secondsSPEAKER 2: OK, and water-- what do we think water is?

Skip to 3 minutes and 36 secondsFRASER: And you have to freeze it. Water turns into ice.

Skip to 3 minutes and 42 secondsSPEAKER 2: OK. So Fraser thinks it might be a solid. We think liquid over here. Sereah and Jude, what do you think?

Skip to 3 minutes and 49 secondsSPEAKER 5: I think it's going to be a liquid.

Skip to 3 minutes and 51 secondsSPEAKER 2: OK. Why do you think it's going to be a liquid?

Skip to 3 minutes and 54 secondsSPEAKER 5: Well, when you feel jelly, it's really soft and wet. And jelly is made out of water.

Skip to 4 minutes and 1 secondSPEAKER 2: OK, Jude, what do you think?

Skip to 4 minutes and 3 secondsJUDE: I think it's a solid and a liquid. Because it starts off as a liquid, and then it turns into a solid. And if you hit something at it, it went up and break into pieces.

Skip to 4 minutes and 16 secondsSPEAKER 2: OK. So then there's just the Coca-Cola left we haven't discussed. What are our thoughts on that one? [INTERPOSING VOICES] What happened when you poured it?

Skip to 4 minutes and 28 secondsSPEAKER 5: Well, when we poured it, it fizzed.

Skip to 4 minutes and 30 secondsFRASER: It stopped and fizzed-- fizzing.

Skip to 4 minutes and 36 secondsSPEAKER 5: It's the gas coming up.

Skip to 4 minutes and 45 secondsEVY: Like if it's a fizzy drink, it will be made of carbon dioxide. Because it needs to bubble. So I think carbon dioxide is a gas. So I think it could be a gas.

Skip to 5 minutes and 3 secondsFRASER: I think it's a liquid because you can pour it just like the sand. and it's mainly And you can drink it. And it's mainly liquid.