Question

A. 2Define: (2)
(i) a physical change
(ii) a chemical change​

Answer 1

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Physical change: A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs.

Chemical change: In a chemical change, a new compound is formed but in a physical change, the substance changes its state of existence. Atoms or ions or molecules which react to form a new substance are called reactants; the new atoms or molecules formed are products.

Answer 2

Answer:

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Explanation:

I.A change which doesn't involve formation of new substance.

ii.A change where formation of new substance takes place.