Catalysts (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a catalyst?
What is a catalyst?
A substance unchanged after a reaction
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?
What is the main role of a catalyst?
To speed up chemical reactions
How do catalysts speed up reactions?
How do catalysts speed up reactions?
By providing an alternative pathway
What is activation energy?
What is activation energy?
Minimum energy needed for a reaction
How does a catalyst affect the activation energy?
How does a catalyst affect the activation energy?
Lowers it
What effect does lowering activation energy have?
What effect does lowering activation energy have?
More particles have enough energy
What happens to the frequency of successful collisions when a catalyst is used?
What happens to the frequency of successful collisions when a catalyst is used?
It increases
Can catalysts be reused in reactions?
Can catalysts be reused in reactions?
Yes, they are regenerated
Why are catalysts used in industry?
Why are catalysts used in industry?
To accelerate slow reactions
What are enzymes?
What are enzymes?
Biological catalysts
Which process do enzymes help with in living organisms?
Which process do enzymes help with in living organisms?
Digestion