Question

Difference between physical and chemical change.​

Answer 1

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In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.

Answer 2

Physical change: it is the type of change in which no change is observed in an object or bodies chemical combination.

example : cutting of a log.

Chemical change : it is the type of change in which a change is observed in an object or bodies chemical combination.

Example : buring of a log.