The boiling point is the specific temperature at which a substance changes from a liquid to a gas. At this temperature, the liquid's vapour pressure equals the atmospheric pressure surrounding it, allowing bubbles of vapour to form within the liquid.
For pure substances under standard atmospheric conditions, the boiling point is a unique property that helps identify the substance and assess its purity.
In GCSE Chemistry, understanding boiling points is essential for studying changes of state and the effects of pressure and impurities on a substance's boiling temperature.
Examiner-written GCSE Chemistry revision resources that improve your grades 2x
- Written by expert teachers and examiners
- Aligned to exam specifications
- Everything you need to know, and nothing you don’t
Share this article
written revision resources that improve your