How can you use evidence to determine if a change is physical or chemical?

Question

Chemistry

Tyson Mcintyre

25 July, 13:45

How can you use evidence to determine if a change is physical or chemical?

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Esther · Answer 1

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.