Chemistry A-Level
catalyst
What catalyst means in Chemistry A-Level, as defined for AQA.
Definitions of catalyst
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Reference: AQA
Provides an alternative route with a lower activation energy and is chemically unchanged at the end of the reaction.
A substance that increases the rate of a chemical reaction without being changed in chemical composition or amount.
Topics that use catalyst
- Catalysts (AQA A-Level)
- Catalysts (A-level only) (AQA A-Level)
Related terms
- autocatalysis
- active sites
- adsorption on active sites
- area beyond Eₐ
- catalytic converters
- economic consequences
- Haber process
- heterogeneous and homogeneous
Using catalyst in the exam
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