Question

Write two differences between physical and chemical changes

Answer 1

Answer:

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Explanation:

Physical change=those change in which no new substance are formed are called physical changes .

chemical change=chemical change occurs when two chemical substance react to produce a new substance with a different set of properties .

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Answer 2

Answer:

Physical changes:

(i)These changes are temporary changes.

(ii) They are reversible change ,they can turn back into their original form.

For example: Ice into water by heating;water into ice by freezing.

Chemical changes:

(i) These changes are permanent changes.

(ii) They are irreversible change ,they can't be turned into their original form.

For example: a paper burn into ashes