Definition- Anything that occupies space has mass is called matter.

Volume- The space occupied by any substance is called volume.

Mass-The amount of matter contained in a body is called its mass.


States of matter – Matter exist in three states.

Solid, Liquid and gas.


Interconversion of state- The change in state of matter from one to another is called Interconversion of State

Solids can change into liquid through Melting.

Liquids can change in gases by Boiling.

Gases can change into liquid by Condensation.

Solids can change directly to gases by Sublimation.