Question

physical and chemical change​

Answer 1

Answer:

physical change

when a material undergoes a change in shape, size, colour or state without the formation of a new substance, then it is called a physical change.

chemical change

when a material undergoes a change in its composition it is called a chemical change.

a chemical change is also called chemical reaction.

Answer 2

Answer:

chemical change:

A chemical change results from a chemical reaction.

Examples of chemical changes are burning, cooking, rusting, and rotting.

physical change:

physical change is when matter changes forms but not chemical identity.

Examples of physical changes are boiling, melting, freezing, and shredding.

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