(inter) conversions of states

• Solid to liquid

  Melting
• Liquid to solid

  freezing
• Liquid to gas

  Evaporation
• gas to liquid

  condensation
• solid to gas

  sublimation
• gas to solid

  deposition
• Strong forces

  Have a higher melting point and boiling point. More energy is required to break these forces.
• Weak forces

  Have a lower melting and boiling point. Less energy is required to break these forces.