Collision Theory & Activation Energy (Edexcel GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does Collision Theory explain?
What does Collision Theory explain?
How & why chemical reactions happen
What must reactant particles do for a reaction to occur?
What must reactant particles do for a reaction to occur?
Collide with each other
What two things must collisions have for a reaction to occur?
What two things must collisions have for a reaction to occur?
Enough energy & right direction
What is a successful collision?
What is a successful collision?
Collision that breaks & forms new bonds
Do all collisions between reactant particles result in a reaction?
Do all collisions between reactant particles result in a reaction?
No, not all collisions
How does successful collision frequency affect reaction rate?
How does successful collision frequency affect reaction rate?
More frequent = faster reaction
What is activation energy?
What is activation energy?
Min energy needed for reaction
What does activation energy represent?
What does activation energy represent?
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
How do reactions with low activation energy occur?
How do reactions with low activation energy occur?
More quickly
Why are low activation energy reactions faster?
Why are low activation energy reactions faster?
More particles have enough energy
Why are high activation energy reactions slower?
Why are high activation energy reactions slower?
Fewer particles overcome barrier