What are the three fundamental states of matter? Explain them briefly.

(N/A) The three fundamental states of matter are:
$1$. Solid: Particles are closely packed in a fixed structure,having a definite shape and volume.
$2$. Liquid: Particles are less tightly packed than in solids,having a definite volume but no fixed shape; they take the shape of the container.
$3$. Gas: Particles are far apart and move randomly,having neither a definite shape nor a definite volume.