Chemistry GCSE
Catalyst
What Catalyst means in Chemistry GCSE, as defined for AQA, OCR.
Definitions of Catalyst
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Reference: AQA
A substance that increases the rate of reaction by providing an alternative pathway with a lower activation energy, and is regenerated at the end of it.
A substance that provides an alternative reaction pathway with lower activation energy, increasing the rate without being used up.
A substance that increases the rate by providing an alternative pathway with a lower activation energy.
Something that provides an alternative pathway with a lower activation energy.
Something that increases the rate of a chemical reaction but is not consumed.
A substance that increases the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy, without being consumed in the process.
Topics that use Catalyst
- Catalysts (AQA GCSE)
- Collision theory and activation energy (AQA GCSE)
- Factors which affect the rates of chemical reactions (AQA GCSE)
- Reaction profiles (AQA GCSE)
- Topic C5: Monitoring and controlling chemical reactions (OCR GCSE)
Related terms
- Activation energy
- Collision theory
- Atom economy
- Collision frequency
- Collisions
- Concentration and pressure effects
- Dynamic equilibrium
- Effect of temperature on collision energy
Using Catalyst in the exam
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