Question

What us ment by physical and chemical changes


explain in breif.☑
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Answer 1

Answer:

In a physical change, no new substance is formed. A chemical change is always accompanied by one or more new substance. Physical change is easily reversible original substance can be recovered. Chemical changes are irreversible original substance cannot be recovered.

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Answer 2

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What us ment by physical and chemical changes?

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Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.☺