Question

what do you mean by physical change and chemical change ​

Answer 1

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.

Answer 2

Physical change :-

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.

Chemical change :-

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

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