Define the followingA. Chemical changeB. Reversible changeC. Periodic – InterviewSolution

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1.	Define the followingA. Chemical changeB. Reversible changeC. Periodic changeD. physical change
Answer» (a) A chemical change is defined as a change in which the molecular composition of the substance changes and new substance are formed. (b) A change which can be reversed is called reversible change. (C ) A change which occurs again and agin after fixed intervals of time is called periodic change . (d) A physical change is defined as a change in which hte molecular composition of the substance remains unchanged nad no new substance

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