Change of State

Contents / notes

• Latent heat.
• Specific latent heats of fusion and vaporisation.
• Melting, evaporation and boiling.
• Influence of pressure and dissolved substances on boiling and melting points.
• Applications in appliances.

Candidate objectives

• Differentiate between latent heat and specific latent heats of fusion and vaporisation.
• Differentiate between melting, evaporation and boiling.
• Examine the effects of pressure and dissolved substances on boiling and melting points.
• Solve numerical problems involving change of state.