Question

Write down the characteristics of a chemical change.

Answer 1

1. Evolution of gas
2. Changes in Color
3. May have Odor
4. Formation of a Precipitate
5. May be Endothermic Reaction or
6. May be Exothermic Reaction
7. New substance is formed
8. Maximum chemical changes are not reversable

Answer 2

The following are the characteristics of chemical changes :

• Evolution of gas.

• Formation of Precipitate

• Change in Temperature

• Change in State

• Change in Colour.