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If I heat 10ml of water in a soda can on a Bunsen burner until steaming and then I invert the can into ice water, is there any chemical reaction taking place in order to implode?
Answer 1:

No, it is not a chemical reaction. It is a physical reaction.

Anything that has a temperature will expand or contract with temperature. This is especially true of gasses. Ice water is cold, so the rapid cooling from a very hot temperature will cause contraction, and thus implosion.



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