Chemistry › Section J · Liquids and solids › Topic J.3
Phase transitions
Melting, boiling and their reverses happen at fixed temperatures and carry large, predictable amounts of energy. Vapour pressure explains when a liquid boils, and a heating curve shows exactly where the energy goes.
In this topic
- Six changes of state
- Vapour pressure
- Boiling
- The Clausius-Clapeyron equation
- Worked example: inside a pressure cooker
- Worked example: finding ΔH_vap
- Melting and sublimation
- Heating curves
- Worked example: from ice to steam
- Common mistakes to avoid
- Key takeaways
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