Question

differentiate between physical and chemical changes . give two examples each​

Answer 1

Answer:

A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

Answer 2

Hey, there!

Answer to this question is:

Physical changes are those changes that occur in the physical properties of a substance and during this type of change no new substance is formed. ( most physical changes are reversible ).

For example:

Freezing of water, Tearing of paper.

Chemical change is a change that occurs in the chemical properties of a substance and during this type of change new substances are formed.

( most of the chemical changes are irreversible )

For example:

Growth in plants and animals, Burning of paper.

Hope this will help