Chemistry A-Level
particles per unit volume
What particles per unit volume means in Chemistry A-Level, as defined for AQA.
Definition of particles per unit volume
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Reference: AQA
Concentration counts particles per unit volume, so doubling the concentration of a reactant in solution gives twice as many of its particles in every cubic decimetre.
Topics that use particles per unit volume
- Effect of concentration and pressure (AQA A-Level)
Related terms
- collision frequency
- Concentration and pressure equivalence
- inert gas at constant volume
- molecules closer together
- pressure and gas concentration
- proportion unchanged
- successful collisions
- Unchanged energy distribution
Using particles per unit volume in the exam
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