00:00All right, here we are, we're going to put a filled balloon and some liquid nitrogen.
00:07All right, so here we go, into the liquid nitrogen.
00:17You can see the balloon's getting smaller.
00:20As it gets colder and colder, the air condenses, the volume wants to go down.
00:25The material lets it, because it's stretchy, but not for long.
00:32You hear that crinkling?
00:34The rubbery, nice, stretchy balloon is starting to turn into something very hard.
00:45Once it reaches its minimum point, the balloon is now completely frozen.
00:55It's now a fairly hard material, with the smallest amount of possible air in it.
01:03So now we grab it, take it out.
01:07What happens to the balloon?
01:12It's starting to pop, expand, as the air wants to fill back up.
01:20Sounds like popcorn.
01:26And there it goes, as it returns to the regular room temperature.
01:33It fills all the way back up.
01:34It fills all the way back up.
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