Particle Theory

• Particle Theory

  • All about explaining how particles move in each matter
  • In a solid the particles vibrate around a fixed position. There is a strong force of attraction between each particle and they are very close together.
  • In a liquid the particles are close together but can move in any direction. They won't keep a fixed position like solids do.
  • In a gas the particles are very far apart and move quickly in all directions. They often collide with each other because they are far apart and can be easily squashed (compressed)
• Transitions in states of matter

  1. Solid --> Liquid = Melting
  2. Liquid --> Gas = Evaporating (melting point)
  3. Gas --> Liquid = Condensation
  4. Liquid --> Solid = Freezing
  5. Solid --> Gas = Sublimation
  6. Gas --> Solid = Deposition
• Temperature

  The average kinetic energy of all particles in a space