Class 7SMART ANALYSERscience work bookchapter 6physical and chemical c – InterviewSolution

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1.	Class 7SMART ANALYSERscience work bookchapter 6physical and chemical changes
Answer» tion: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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