Question

what are physical and chemical changes​

Answer 1

Answer:

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Physical changes-

Physical changes only change the appearance of a substance, not its chemical composition.

chemical Changes-

Chemical changes cause a substance to change into an entirely substance with a new chemical formula.

Answer 2

Physical Change

A change in which a substance undergoes a change in its

physical properties is called a physical

change. A physical change is generally reversible.

Chemical Change

The change in which the molecular composition is completely altered and a new product is formed is called a chemical change. The changes in Chemical change are irreversible and permanent.