Specific latent heat

• Specific latent heat

  Energy required to change 1kg of a particular substance from one state to another, without a change in temperature
• What happens to the temperature of a substance whilst it changes state

  Remains constant
• Why does the temperature remain constant while it’s melting or boiling

  Energy is used to break the forces holding the particles together rather than being transferred to the particles kinetic energy store
• Specific latent heat of fusion

  When a substance changes from a solid to a liquid or vice versa
• Specific latent heat of vaporisation

  When a substance changes from a liquid to a gas or vice versa