Phase changes

At the end of this activity, students should be able to:
– define a phase and a phase change
– describe and analyse cooling and heating curves
– explain phase changes in terms of the kinetic theory
– define melting and boiling points
– describe melting and freezing processes in terms of dynamic equilibrium
– explain the process of vaporisation and the existence of vapour pressure
– tell the difference between vaporisation and boiling
– explain why boiling point depends on external pressure
– describe sublimation and deposition.