Rollercoaster hosts Ruben Meerman and Elliot Spencer carry a table into the studio. On it is a jug of water and some salt.
ELLIOT SPENCER: Yeah, I know it's hot work, but I'll get you a nice cool drink as soon as we set up. OK, what do we need?
RUBEN MEERMAN: Alright, we need some salt. Need some string.
ELLIOT SPENCER: Got it.
RUBEN MEERMAN: Water and a glass.
ELLIOT SPENCER: Yep.
RUBEN MEERMAN: And where's that cool drink?
ELLIOT SPENCER: I'll get it.
Elliot rushes to the side and comes back with two empty glasses and another glass containing ice.
ELLIOT SPENCER: Alright, alright. I've got a couple of glasses here.
RUBEN MEERMAN: Beautiful.
ELLIOT SPENCER: And I've got a glass of ice. OK, alright, let me just fill this one up for you. There we go.
Elliot fills a glass with water from the jug.
RUBEN MEERMAN: Thank you very much.
Ruben takes a sip while Elliot fills a second glass with water.
ELLIOT SPENCER: OK, and I'll have this one. Hold on. How many ice cubes do you want in your water?
RUBEN MEERMAN: No, the ice is for the experiment.
ELLIOT SPENCER: OK, I'm just gonna have to go without a drink.
ELLIOT SPENCER: How many should I put in there?
RUBEN MEERMAN: Two.
Elliot puts two ice cubes into his glass of water.
ELLIOT SPENCER: OK, one, two. Oops, spilt a bit. OK, what's next?
RUBEN MEERMAN: Alright, well, Elliot how does water freeze?
ELLIOT SPENCER: You put it in the freezer.
RUBEN MEERMAN: Oh, OK. Well, forget how — WHY does water freeze?
ELLIOT SPENCER: It freezes because all the little water molecules huddle up together when they're so cold and try to keep warm.
RUBEN MEERMAN: Well, actually, almost. But actually, look, temperature is a measure of the speed of molecules. And if you slow the molecules down enough, they will form bonds between each other, stop being a liquid and start becoming a solid.
ELLIOT SPENCER: Ah! I'm with you now. Interesting.
RUBEN MEERMAN: At what temperature do you think water molecules do this thing of stop being a liquid?
ELLIOT SPENCER: I know this one — 0 degrees Celsius.
RUBEN MEERMAN: Very good. But, now, can we make it lower than that?
ELLIOT SPENCER: Maybe. But I'm not sure how you'd get the water to go, 'You know what — I don't think I'll freeze at 0 degrees today. I think I'll freeze at minus-2 degrees.' Unless you had some sort of magic potion, which you don't. So, what are you gonna do?
RUBEN MEERMAN: Well, you could just use salt.
ELLIOT SPENCER: I'm listening. I'm all ears.
RUBEN MEERMAN: Alright, well, here's our experiment.
RUBEN MEERMAN: You need some string.
ELLIOT SPENCER: Yep. Got ya.
Ruben bites through a length of cotton to break off a shorter piece.
RUBEN MEERMAN: Alright!
ELLIOT SPENCER: Bite through that. Go on.
RUBEN MEERMAN: We're going to lay it on top of our ice cubes.
Ruben lays the string on top of the ice cubes in Elliot's glass of water.
RUBEN MEERMAN: Make sure the string is nice and wet. (Grunts) Get on there!
RUBEN MEERMAN: And then…
ELLIOT SPENCER: It's a tricky business.
RUBEN MEERMAN: ..we're going to pour salt onto the string.
ELLIOT SPENCER: Oh!
RUBEN MEERMAN: Straight onto the string.
ELLIOT SPENCER: That's interesting, because I was expecting something a little bit more… a bit of fizzing, bubbling, but it's… nothing's really happening at all.
RUBEN MEERMAN: Well, keep watching.
ELLIOT SPENCER: Look, it's just string laying across ice. I mean, what kind of experiment are you doing?
RUBEN MEERMAN: What do you think will happen when I lift the string?
Ruben lifts the string. A piece of ice has attached itself to the string.
ELLIOT SPENCER: Holy… Look at that! He went fishing and he caught some ice! How's that doing that?
RUBEN MEERMAN: Well, salt reduces the freezing temperature of water. So when you sprinkle salt onto an ice cube, a little bit of the ice cube melts, then it refreezes.
ELLIOT SPENCER: That's fantastic. You know what — this has given me an idea. I'm gonna get something. You keep talking.
Elliot runs off to the side.
RUBEN MEERMAN: Rightio. Well, look, it's a very useful thing because in countries where it gets freezing cold…
Elliot returns with a tub. He places some ice inside.
ELLIOT SPENCER: Get some ice.
RUBEN MEERMAN: ..they pour salt onto the roads to make any ice melt so it's much safer to drive your cars. Now, what are you up to over there?
ELLIOT SPENCER: Well, I was thinking, what if…
Elliot pours some water in the tub, then adds a long length of cotton string.
ELLIOT SPENCER: All I need is a little bit of string and a little bit of fashion sense and a bit more ice, and a bit of your fantastic salt there, and I can make what I call… an ice necklace!
Elliot plucks the long length of cotton string from the tub. It has ice cubes attached all along it.
ELLIOT SPENCER: Check out that! Wouldn't that be…
Elliot places the ice necklace around his neck.
ELLIOT SPENCER: Ooh, it's a bit cold. Wouldn't that be great on a hot day? I call it Cool Bling. (Shivers) Yeah. Oh, I'm getting a bit cold. What… what's next week?
RUBEN MEERMAN: Vacuums, Elliot.
ELLIOT SPENCER: Yeah, cool. (Pants) It's a bit cold. I'm really cold, Ruben. (Weeps) It's getting dark. Oh, it's too cold. I'm getting frostbite on my… (Hyperventilates) (Whimpers) Oh, I gotta get it off.
Elliot walks off to the side. Ruben smiles.
