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What is a catalyst?

What is a catalyst?

A catalyst is a substance that increases the rate of a reaction by providing an alternative pathway with a lower activation energy. It takes part in the reaction but is regenerated, so it is not used up overall.

5.2.3 Catalysts, activation energy and enzymes Lesson

  1. GCSE
  2. /Chemistry
  3. /5.2.3 Catalysts, activation energy and enzymes

Step-by-step lessons on OCR GCSE Chemistry 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.

Lessons