SC1

• Solid:

  • strong forces of attraction between particles in fixed positions in a regular lattice arrangement
  • definite shape and volume
  • particles vibrate in place
• Liquid:

  • particles free to move around each other
  • no definite shape but same volume
  • particles constantly moving with random motion
• Gas:

  • free to move in straight lines until collision
  • no definite shape or volume
  • particles move constantly in random motion
• State Changes - heat causes particles to vibrate faster and break the bonds holding them together

  • solid and liquid is melting and freezing
  • liquid and gas is evaporating and condensing
  • solid to gas is subliming