States of Matter

• Process: Melting

  Change: S -> L

  Heat energy: Gained

  Exo or endothermic: Endothermic
• Process: Boiling

  Change: L -> G

  Heat energy: Gained

  Exo or endothermic: Endothermic
• Process: Condensing

  Change: G -> L

  Heat energy: Lost

  Exo or endothermic: Exothermic
• Process: Freezing

  Change: L -> S

  Heat energy: Lost

  Exo or endothermic: Exothermic
• Process: Sublimation

  Change: S -> G

  Heat energy: Gained

  Exo or endothermic: Endothermic
• Process: Reverse sublimation

  Change: G -> S

  Heat energy: Lost

  Exo or endothermic: Exothermic