Collision Theory & Activation Energy (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What must reactant particles do for a chemical reaction to occur?
What must reactant particles do for a chemical reaction to occur?
Collide with each other
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 and right direction
What is a successful collision?
What is a successful collision?
Collision with enough energy to break bonds
How does the frequency of successful collisions affect the rate of reaction?
How does the frequency of successful collisions affect the rate of reaction?
More frequent = faster reaction
What is activation energy?
What is activation energy?
Min. energy needed to start a reaction
What does activation energy act as?
What does activation energy act as?
An energy barrier to overcome
What happens if particles don't have enough energy when they collide?
What happens if particles don't have enough energy when they collide?
They bounce off without reacting
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
What does Collision Theory help us understand?
What does Collision Theory help us understand?
How and why chemical reactions happen