When do chemical reactions occur?

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asked Jul 11, 2021 162k views

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Malav Soni · Answer 1 · 2021-07-15T01:25:39+0000

Answer:

When the molecular composition changes.

Step-by-step explanation:

A physical change is a change in size or appearance that can usually be reversed; a chemical change cannot be reversed easily and changes the atomic composition of something.

When do chemical reactions occur?

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