Question

what is physicall change​

Answer 1

Answer:

When a substance changes states (from a liquid to a gas, for example), it is undergoing a physical change.

Melting is an example of a phase change, where a solid is changed to a liquid. Freezing and boiling are also physical changes.

Explanation:

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Answer 2

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A physical change is a change to the physical—as opposed to chemical—properties of a substance.

They are usually reversible.