Question

Write the characteristics of physical changes.

Answer 1

Physical change: The change in which no new substance is formed, and the chemical composition of the original substance is not altered.

The following are the characteristics of a physical change:

• Physical change is temporary and can be reversed by changing the conditions.
• In physical change no new substance is formed. So, The total mass of the substances involved in a chemical change remains constant.
• There is no significant change in the energy involved.
• In physical change there is no change in the chemical composition of the original substance.
• In the physical properties such as state, shape, size, or colour of the original substance may or may not be changed .