Question

5. Changes can be brought about by heating or cooling certain substances,
It is true or false.
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Answer 1

Explanation:

Substances which expands on heating, regain their original shape on cooling without forming any new substances. This change is a physical change.

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Answer 2

Answer:

Substances which expands on heating, regain their original shape on cooling without forming any new substances. This change is a physical change.

Explanation:

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