Question

what is a physical and chemical change? give 2 example.
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Answer 1

Answer:

Physical change is the change in the physical properties and is reversible. It make changes in the appearance of the matter. It does not form a new substance.

Chemical change is the change in the chemical properties and is irreversible. It results in formation of a new substance.

Answer 2

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.