Melting, boiling and evaporation
Core concepts and learning points for this section:
Syllabus Points
Core
- 2.2.3.1 Describe melting and boiling in terms of energy input without a change in temperature
- 2.2.3.2 Know the melting and boiling temperatures for water at standard atmospheric pressure
- 2.2.3.3 Describe condensation and solidification in terms of particles
- 2.2.3.4 Describe evaporation in terms of the escape of more-energetic particles from the surface of a liquid
- 2.2.3.5 Know that evaporation causes cooling of a liquid
Supplement
- 2.2.3.6 Describe the differences between boiling and evaporation
- 2.2.3.7 Describe how temperature, surface area and air movement over a surface affect evaporation
- 2.2.3.8 Explain the cooling of an object in contact with an evaporating liquid www.cambridgeinternational.org/igcse 20 Subject content