Collision theory (AQA GCSE Chemistry Combined Science): 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 help us understand?
What does collision theory help us understand?
Why reaction rates change with conditions
Which factor does NOT affect reaction rates according to collision theory?
Which factor does NOT affect reaction rates according to collision theory?
Atomic number
What proportion of particle collisions actually cause a reaction?
What proportion of particle collisions actually cause a reaction?
Only a small number
What is the first condition needed for a reaction to occur?
What is the first condition needed for a reaction to occur?
Particles must collide
What is the minimum energy needed for a reaction called?
What is the minimum energy needed for a reaction called?
Activation energy
What happens if particles collide but lack enough energy?
What happens if particles collide but lack enough energy?
No reaction occurs
How many conditions must be met for a collision to cause a reaction?
How many conditions must be met for a collision to cause a reaction?
Two
What does increasing collision frequency do?
What does increasing collision frequency do?
Makes reactions happen faster
Which is the main factor that affects particle energy?
Which is the main factor that affects particle energy?
Temperature
What happens to particles at higher temperatures?
What happens to particles at higher temperatures?
They move faster
When concentration doubles, what happens to collision frequency?
When concentration doubles, what happens to collision frequency?
Doubles
What happens to reaction rate when concentration is doubled?
What happens to reaction rate when concentration is doubled?
It doubles