Collision Theory & Activation Energy (Edexcel GCSE Chemistry Combined Science): Quizzes
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Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
What does collision theory state must happen for a chemical reaction to occur?
What does collision theory state must happen for a chemical reaction to occur?
Particles must collide
What two conditions must be met for a collision to lead to a reaction?
What two conditions must be met for a collision to lead to a reaction?
Enough energy & right direction
What is a successful collision?
What is a successful collision?
Collision with enough energy to react
What is activation energy?
What is activation energy?
Minimum energy needed to start reaction
What happens when particles collide without enough energy?
What happens when particles collide without enough energy?
They bounce off each other
How does the frequency of successful collisions affect the reaction rate?
How does the frequency of successful collisions affect the reaction rate?
More frequent = faster reaction
Why do reactions with low activation energy happen more quickly?
Why do reactions with low activation energy happen more quickly?
More particles can overcome barrier
Why are reactions with high activation energy slower?
Why are reactions with high activation energy slower?
Fewer particles overcome the barrier
What must happen to bonds during a successful collision?
What must happen to bonds during a successful collision?
They must break & new ones form