changes of state

• MELTING (solid--> liquid)


  when a solid is heated up particles vibrate more

  particles gain more energy

  this weakness the forces of attraction between them

  once melting point has reached

  particles will have enough energy to overcome the bonds
• CONDENSATION (gas --> liquid)

  Particles do not have enough energy to overcome the forces of attraction

  bonds form condensing the gas into a liquid
• BOILING (liquid --> gas)

  When a liquid is heated particles gain more energy

  move around faster

  this weakness the forces holding the particles together

  when boiling point is reached

  particles have enough energy to overcome the bonds
• FREEZING ( liquid --> solid)

  particles do not have enough energy to overcome the forces of attraction

  bonds start to form freezing the liquid into a solid