Specific Latent Heat

• Specific Latent Heat is the energy change per kilogram when a material changes state
• What is specific latent heat?

  The energy change per kilogram when a material changes state
• The two possible change in states are fusion and vaporisation
• Vaporisation - boiling from liquid to gas
• Fusion - melting from solid to liquid
• When a substance changes from solid to liquid, or liquid to gas, energy is being put into the substance
• What is happening when a material melts or evaporates?


  energy is being put into the substance
• When a substance changes state, the temperature remains constant