Question

How are shape and volume used to classify solids, liquids and gases?

Answer 1

Hint: Solids are completely packed and have both volume and shape; liquids are somewhat loosely packed in comparison to solids and have fixed volume but gases are completely loosely packed and don't have any shape or volume. Now you can easily answer the given statement accordingly.

Complete answer:
Shape and volume helps us to classify the solids, liquid and gases as all the three states of matter differ in these properties from each other and we can easily distinguish them.
We will differentiate between the solid, liquid and gas on the basis of shape and volume in the tabular form because it’s easy to distinguish them as well as to remember them.

Sr. no	Property	Solid	Liquid	Gas
1.	Shape	Solids have fixed shape.	Liquids do not have any fixed or definite shape. They take the shape of the container in which they are stored or placed.	Gases do not have any definite shape. They completely occupy the container in which they are placed.
2	Volume	Solids have fixed volume.	Liquids have a definite volume.	Gases do not have any definite volume and occupy all the volume of the container.

Note: Matter is something which has some mass and it occupies some space and all these three states of matter I.e., solid , liquid and gas are interconvertible into one another by making certain changes in the conditions of the temperature and the pressure.