Question

Define chemical changes.

Answer 1

Chemical change results in formation of new substances.
For example :Iron rusting,Burning of paper, etc.

Hope it helps you. . . . .

Answer 2

Chemical Changes:-

Those changes in which new substance are formed are called chemical changes.

• Chemical changes are permanent changes which cannot be reversed or are irreversible.

•For ex:- Burning of paper, burning of magnesium ribbon, cooking of food etc.