nathanlong nathanlong

04-03-2016
Health

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Why does a substance change states?

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brave05 brave05

04-03-2016

Because the molecules in an object either expand when warm or contract if its cold

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Аноним Аноним

09-03-2016

A substance changes states because, the molecules in a object has to spread out and move quickly when it's warmer and moves slower if the subtance is getting colder.

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