How do particles move?

Particles in solids are always vibrating (moving back and forth) in place. The vibrational motion of particles in solids is kinetic energy. Heat makes the particles in a solid vibrate faster, giving them more kinetic energy ... When a sample of solid, liquid, or gas matter heats up, it expands.

Gas vibrate and move freely at high speeds. Liquids vibrate, move about, and slide past each other. Solids vibrate (jiggle) but generally do not move from place to place