ICSE Class 7 Chemistry Question 3 of 13

Physical and Chemical Changes — Question 7

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Question 7

State four differences between physical and chemical changes.

Answer
Physical changesChemical changes
Change is temporary.Change is permanent.
No new substance is formed. There is change only in physical properties.New substances are formed with entirely different properties.
Change can be reversed by simple methods.Change cannot be reversed by simple methods.
Heat or light may or may not be given out or consumed.Heat or light or both are given out or consumed.