how can you tell a chemical reaction

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from a physical reaction?

Apr 19th, 2015

While a physical reaction can be reversed, a chemical reaction cannot be reversed. For instance, a rubber band once melted cannot become a rubber band again, but the rubber band when stretched can return to an unstretched position.

Apr 19th, 2015

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Apr 19th, 2015
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Apr 19th, 2015
Oct 18th, 2017
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