~ Particles are packed tightly together so they are unable to move about very much. They have very low kinetic energy.
~ The particles can only vibrate and cannot move freely because the force between them are strong.
~ Particles are not held in a regular arrangement, but they are still very close to each other and have just enough space to flow freely around each other. They have more kinetic energy compared to the particles in a solid.
~ Gas particles have a great deal of space between them and have high kinetic energy.
~ When a gas is put under pressure by reducing the volume of the container, the space between particles is reduced, and the pressure exerted by their collisions increases.