Specific Latent Heat

• What happens to particles as a substance is heated?

  Particles gain energy in their kinetic energy store
• What concept is discussed in today's video?

  Specific latent heat
• How does temperature relate to internal energy?

  Temperature measures average internal energy of particles
• What occurs during a change in state when heating a substance?

  Energy weakens or breaks forces between particles
• What happens to temperature during a state change?

  Overall temperature remains constant
• What is the latent heat?

  Energy required to change state without temperature change
• What is specific latent heat (SLH)?

  Energy to change 1 kg of substance's state
• What are the two types of specific latent heat?

  Vaporization and fusion
• What is the specific latent heat of vaporization?

  Energy change between liquid and gas
• What is the specific latent heat of fusion?

  Energy change between solid and liquid
• What happens to the temperature of ice at 0 degrees Celsius?

  Temperature remains constant during melting
• What is the specific latent heat of fusion for water?

  334,000 joules per kilo
• What happens at 100 degrees Celsius when heating water?

  Temperature remains constant during boiling
• What is the specific latent heat of vaporization for water?

  2,260,000 joules per kilo
• What happens when water cools and changes state?

  Energy is released during bond formation
• What is the equation for specific latent heat?

  Energy = mass × specific latent heat
• How much energy is required to boil 2.5 kg of water?

  5,650,000 joules
• What is the specific latent heat used for boiling water?

  Specific latent heat of vaporization
• What should you do if you need specific latent heat values in an exam?

  They will be provided to you