specific latent heat

• What is specific latent heat?

  Energy required to change state without temperature change
• What happens to temperature when a substance changes state?

  Temperature remains constant during the change
• What is the specific latent heat of vaporization?

  Energy required to change liquid to vapor
• How do you calculate the energy change during a state change?

  Energy = mass × specific latent heat
• What is the formula for calculating energy change during a state change?

  Energy = mass × specific latent heat
• What are the key definitions related to specific latent heat?


  • Specific latent heat: Energy to change state of 1 kg without temperature change
  • Specific latent heat of fusion: Energy to change solid to liquid
  • Specific latent heat of vaporization: Energy to change liquid to vapor
• How do you calculate energy for a change of state?

  1. Identify mass in kilograms
  2. Identify specific latent heat in joules per kilogram
  3. Use formula: Energy = mass × specific latent heat
• What happens to energy during a state change?

  • Energy is absorbed or released
  • Temperature remains constant during the change
  • Forces of attraction between particles are weakened or broken