Concentration and pressure
What Concentration and pressure means in Combined Science GCSE, as defined for AQA.
Definitions of Concentration and pressure
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Reference: AQA
Higher concentration means more reactant particles per unit volume in solution, and higher gas pressure means the same particles occupy a smaller volume, so collisions are more frequent.
More reactant particles in the same volume, or gas particles brought closer together, make collisions more frequent and increase the rate.
Topics that use Concentration and pressure
- Collision theory and activation energy (AQA GCSE)
Related terms
- Activation energy
- Catalysts
- Collision theory
- Factors affecting rates
- Proportional reasoning
- Rate of reaction
- Surface area
- Temperature and reaction rate
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