latent heat

Cards (7)

What is latent heat?
the amount of energy needed to change the state of 1kg of a substance without a change in temperature.
What does latent heat depend on?
mass, type of substance & size of forces that must be overcome.
What does specific heat of fusion refer to?
the amount of energy needed to change 1kg of solid to 1kg of liquid at its melting point.
What is specific heat of vaporisation?
the amount of energy needed to change 1kg of liquid to 1kg of gas at its boiling point.
What is Specific latent heat in J/kg from ice to water?
340,000
What happens when a change of state occurs?
the energy supplied changes the internal energy, but not temperature.
What is the formula for latent heat?
energy = mass × specific latent heat