<em><u>Volume is a physical quantity that refers to the amount of space that is occupied by a body or an object.</u></em>
Volume may either be expressed in<em><u> Liters, milliliters or cubic units such as cubic meters, or cubic centimeters.</u></em>
Among the three states of matter; solids have a definite or regular shape and volume. Liquids also have regular volume but occupies the shape of the container. Gases have an irregular volume and fills an the space of a container, that is they do not have a fixed volume.