Chemistry A-Level
pressure and gas concentration
What pressure and gas concentration means in Chemistry A-Level, as defined for AQA.
Definition of pressure and gas concentration
Check what you remember
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Reference: AQA
Squeezing a fixed amount of gas into a smaller volume packs the same number of molecules into less space, so the concentration of every gaseous reactant rises.
Topics that use pressure and gas concentration
- Effect of concentration and pressure (AQA A-Level)
Related terms
- collision frequency
- Concentration and pressure equivalence
- inert gas at constant volume
- molecules closer together
- particles per unit volume
- proportion unchanged
- successful collisions
- Unchanged energy distribution
Using pressure and gas concentration in the exam
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