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2015-08-14T18:32:17+08:00

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The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
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2015-08-14T19:00:24+08:00

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Physical changes are changes in the appearance while chemical can be the changes in the structure of what the thing is made of.

Hope I helped ^_^v
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