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Measuring how quickly a reaction happens

Measuring how quickly a reaction happens

Rate of reaction means how quickly a reactant is used up or a product is formed. The mean rate is the change in amount divided by the time taken:

5.2 Controlling reactions Lesson

  1. GCSE
  2. /Chemistry
  3. /5.2 Controlling reactions

Step-by-step lessons on OCR GCSE Chemistry 5.2 Controlling reactions, covering 5.2.1 Measuring and interpreting rate of reaction, 5.2.2 Factors affecting rate and collision theory, and 5.2.3 Catalysts, activation energy and enzymes. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

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