Brainliesttt ! answer!

what evidence would show if there had been a physical reaction? explain.

If the item or substance has changed into a state where you are able to change it back such as:

Water melting

Water freezing

Physical characteristics include change in shape, size, texture, color, smell, density, boiling/melting point, solubility, etc., so any change with those properties would be proof of a physical reaction.

b is the correct

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