Beakman's World: Tomatoes and Liquid Nitrogen
03:52 - 07:40
3m 48s
thermal contraction
thermal expansion
Beakman smashes a tomato with a mallet. Then puts another tomato in liquid nitrogen to show it was frozen and hits with a mallet. He then takes a blown up balloon and puts it in a bowl. He pours liquid nitrogen over it and shows the balloon shrinking. He explains this happens because everything is made of molecules. Then he uses a cartoon schematic to explain further. He also shows that when the balloon gets warmer, the air starts to expand and fills back up the balloon.
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