states of matter

• changes of matter

  
• Heating a solid


  1. Particles gain energy

  2. Particles vibrate more

  3. Forces holding particles together weaken

  4. Melting
• Melting


  When a solid is heated to its melting point
• Heating a liquid


  1. Particles gain more energy

  2. Particles move faster

  3. Boiling

  4. Evaporating
• Boiling


  When a liquid is heated to its boiling point
• Evaporating


  When a liquid becomes a gas
• Freezing


  1. Particles in a liquid lose energy

  2. Particles move less

  3. Particles form more bonds

  4. Liquid becomes a solid
• Freezing


  When the particles in a liquid are cooled to their melting point
• Condensing


  1. Gas turns into a liquid

  2. Particles lose energy

  3. Particles form bonds
• Condensing


  When a gas is cooled to its boiling point