Specific Latent heat

• The energy needed to change the state of a substance is called latent heat
• The specific latent heat (SLH) of a substance is the amount of energy needed to change 1kg of it from one state to another without changing its temperature
• For cooling, specific latent heat is the energy released by a anange in state
• The specific latent heat for changing between a solid and a liquid (melting and freezing) is called the specific latent heat of fusion
• the specific latent heat for changing between a liquid and a gas is called the specific latent heat of vaporisation
• Energy (e) = Mass (m) x Specific Latent Heat (L)

  Joules. Kg. J/Kg