Understand that latent heat is the energy required for a substance to undergo a change of state.
Explain that during a change of state, the supplied energy alters the internal energy of the system without changing its temperature.
Define specific latent heat as the amount of energy needed to change the state of one kilogram of a substance with no corresponding change in temperature.
Distinguish between the specific latent heat of fusion (solid to liquid) and the specific latent heat of vaporisation (liquid to vapour).
Interpret and analyze heating and cooling graphs that illustrate changes of state.
Differentiate clearly between specific heat capacity and specific latent heat.
Apply the relevant equation to calculate the energy change involved in a change of state:
