Catalysts (Edexcel 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 is a catalyst?
What is a catalyst?
A substance that 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 happens to a catalyst during multiple reaction cycles?
What happens to a catalyst during multiple reaction cycles?
It can be reused
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?
Lower activation energy pathway
What is activation energy?
What is activation energy?
Minimum energy for particles to react
What effect does lowering activation energy have on particles?
What effect does lowering activation energy have on particles?
More particles have enough energy to react
What is the result of a higher frequency of successful collisions?
What is the result of a higher frequency of successful collisions?
A faster reaction rate
Why are catalysts used in the chemical industry?
Why are catalysts used in the chemical industry?
To speed up slow manufacturing reactions
What are enzymes?
What are enzymes?
Biological catalysts
In which processes do enzymes play a crucial role?
In which processes do enzymes play a crucial role?
Digestion, respiration, DNA replication