states of matter

• states of matter

  solid

  liquid

  gas
• strength of forces depends on

  • material
  • temperature
  • pressure
• melting


  when a solid is heated, the particles gain more energy

  this makes the particles vibrate more which weakens the force that holds them together

  at the melting point, the particles have enough energy to break free from their positions

  the solid turns into a liquid
• boiling


  when a liquid is heated the particles gain more energy the energy makes the particles move faster which weakens and breaks the bonds that hold the liquid together

  liquid turns into a gas
• condensing


  As gas cools, the particles no longer have enough energy to overcome the forces of attraction between them

  bonds form between the particles

  at boiling point, so many bonds have formed between the gas particles that the gas becomes a liquid
• freezing


  will liquid cools the particles have less energy so they move around less

  there is not enough energy to overcome the attraction between the particles so more bonds form between them

  at melting points, so many bonds and formed that they are held in place the liquid becomes a solid