Catalysts (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What happens to a catalyst at the end of a chemical reaction?
What happens to a catalyst at the end of a chemical reaction?
It remains unchanged
Why are catalysts not included in balanced chemical equations?
Why are catalysts not included in balanced chemical equations?
They are not consumed in the reaction
What is the main role of a catalyst in a chemical reaction?
What is the main role of a catalyst in a chemical reaction?
Speed up the reaction
How do catalysts speed up reactions?
How do catalysts speed up reactions?
Provide alternative reaction pathway
What is activation energy?
What is activation energy?
Minimum energy for reaction to occur
What effect does lowering activation energy have?
What effect does lowering activation energy have?
More particles can successfully react
How do catalysts affect the frequency of successful collisions?
How do catalysts affect the frequency of successful collisions?
Increase the frequency
What is the overall effect of a catalyst on reaction rate?
What is the overall effect of a catalyst on reaction rate?
Faster reaction rate
Why are catalysts used in the chemical industry?
Why are catalysts used in the chemical industry?
Accelerate slow reactions
What are enzymes?
What are enzymes?
Biological catalysts
Can catalysts be reused after a reaction?
Can catalysts be reused after a reaction?
Yes, in multiple cycles