Question

Why do a rubber band contracts while heating instead of expanding????

Answer 1

Answer:

By heating it up, we increase the entropy. ... So by heating the rubber band up, we increase the entropy - the amount of disorder among its molecules - and we make it pull itself tighter together. That's why a rubber band contracts when you heat it up.

Explanation:

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Answer 2

Answer:

By heating the rubber band up we increase the entropy the amount of disorder among it's molecule we make it pull it self righter together that's why a rubber band contract when we heat it up.