Question

give the main difference between physical and chemical change

Answer 1

Answer:

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 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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Answer 2

Answer:A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Explanation:

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