What is the difference between a solid and a gas?

Key difference: Solid, liquid, gas and plasma are the four primary states of matter in which objects can be found on Earth. Solid is a state of matter that has a fixed shape and fixed volume. A gas is a state of matter that has no definite shape or volume. read more

The difference between solid, liquid and gas can be drawn clearly on the following grounds: A substance having structural rigidity and has a firm shape which cannot be changed easily is called solid. A water-like fluid, that flows freely, having a definite volume but no permanent shape, is called liquid. read more

Solid is one of the four main states of matter (solid, gas, liquid, and plasma) that is characterized by structural rigidity (a property of a structure that does not bend but may break) and resistance to changes of shape or volume. read more