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Solids, liquids and gases

A demonstration of a rapid change of state using liquid nitrogen. A melted ice lolly is submerged in liquid nitrogen, at which point it turns back into an ice lolly and is frozen. This demonstrates a rapid change of state. The experiment is repeated using a balloon full of air. A cartoon is used to illustrate particle theory of a gas turning to a liquid and vice versa.

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2 minutes

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