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 is the main function of a catalyst?
What is the main function of a catalyst?
Speeds up chemical reactions
What happens to a catalyst during a chemical reaction?
What happens to a catalyst during a chemical reaction?
It is not used up
How do catalysts affect activation energy?
How do catalysts affect activation energy?
Lower it
What do catalysts provide for chemical reactions?
What do catalysts provide for chemical reactions?
An alternative reaction pathway
On an energy diagram, what does a catalyst pathway show?
On an energy diagram, what does a catalyst pathway show?
A lower peak
Why do different reactions need different catalysts?
Why do different reactions need different catalysts?
Each catalyst works with specific molecules
Why don't catalysts appear in chemical equations?
Why don't catalysts appear in chemical equations?
They are not consumed
What are catalysts called in living things?
What are catalysts called in living things?
Enzymes
How can you test if a substance is a catalyst?
How can you test if a substance is a catalyst?
Weigh it before and after reaction
What does do to hydrogen peroxide decomposition?
What does do to hydrogen peroxide decomposition?
Speeds it up dramatically
Why do reactions happen faster with a catalyst?
Why do reactions happen faster with a catalyst?
More collisions become successful