Question

what do you mean by chemical and physical change.​

Answer 1

Answer:

Key Points. 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.

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Answer 2

Answer:

chemical change : the process in which new substance having properties and composition different from original substance are formed .

physical change: a process in which substance changes it basic composition ( not chemical composition)