Collision Theory & Activation Energy (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
What must reactant particles do for a reaction to occur according to Collision Theory?
What must reactant particles do for a reaction to occur according to Collision Theory?
Collide with each other
What two things must particles have when they collide for a reaction to happen?
What two things must particles have when they collide for a reaction to happen?
Enough energy and right direction
What is a successful collision?
What is a successful collision?
One with enough energy to break bonds
Do all collisions between particles result in a reaction?
Do all collisions between particles result in a reaction?
No, not all collisions are successful
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
What is activation energy?
What is activation energy?
Minimum energy needed to start reaction
What happens if particles don't have enough energy to overcome the activation energy?
What happens if particles don't have enough energy to overcome the activation energy?
They bounce off each other
Why do reactions with low activation energy happen more quickly?
Why do reactions with low activation energy happen more quickly?
More particles have enough energy
Why are reactions with high activation energy slower?
Why are reactions with high activation energy slower?
Fewer particles overcome the barrier