Catalysts and rate
I can describe what a catalyst does and explain how it affects the rate of reaction in terms of activation energy, and justify its use for a reaction based on experimental results.
Catalysts and rate
I can describe what a catalyst does and explain how it affects the rate of reaction in terms of activation energy, and justify its use for a reaction based on experimental results.
Lesson details
Key learning points
- A catalyst affects the reaction rate without being used up.
- A catalyst reduces the activation energy needed for a reaction.
- With a catalyst present, more collisions between reactants result in the formation of product(s).
- Enzymes are biological catalysts.
- Catalysts vary in efficiency; qualitative data helps evaluate effectiveness.
Common misconception
Catalysts increase the amount of product formed.
Catalysts do not affect the quantity of products formed. They increase the rate at which the products are formed.
Keywords
Catalyst - A catalyst is a chemical that increases the rate of a reaction without itself being used up.
Activation energy - The minimum energy that the particles must have in order to react is known as the activation energy.
Reaction profiles - Reaction profiles are diagrams that show the energy of the reactants and products in a chemical reaction.
Qualitative data - Qualitative data is information that describes qualities or characteristics that cannot be measured with numbers.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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