Physics › Section I · Temperature, gases, and heat › Topic I.2
The ideal gas law
A gas has no shape or volume of its own, yet almost every gas obeys the same simple rule linking its pressure, volume, temperature and number of particles. This topic builds that rule, the ideal gas law, in its molecule form and its mole form.
In this topic
- Why gases are simple
- The law in terms of molecules
- Worked example: molecules in a litre
- Moles and the gas constant
- Changing conditions
- Worked example: a heated container
- Worked example: a rising bubble
- Molar volume and the density of air
- Common mistakes to avoid
- Key takeaways
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