Collision Theory & Activation Energy (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
10 questions from this quiz
What must happen for a chemical reaction to occur according to collision theory?
What must happen for a chemical reaction to occur according to collision theory?
Particles of reactants must collide
Which types of particles can collide in a chemical reaction?
Which types of particles can collide in a chemical reaction?
Atoms, molecules, or ions
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 breaking bonds and forming new ones
What happens when successful collisions occur more frequently?
What happens when successful collisions occur more frequently?
The reaction speeds up
What is activation energy?
What is activation energy?
Minimum energy needed to start a reaction
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 is activation energy described as in the note?
What is activation energy described as in the note?
An energy barrier