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AQA A Level Chemistry

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AQA A-Level Chemistry (new spec)
1.5 Kinetics

What is the collision theory? - Correct Answers-Reactions can only occur when collisions take
place between particles when they have sufficient energy

Define activation energy - Correct Answers-The minimum energy needed for particles to collide
to start a reaction

What does the Maxwell Boltzmann distribution show? - Correct Answers-The spread of
energies that molecules of a gas or liquid have at a particular temperature

Why should the energy distribution go through the origin on the graph? - Correct Answers-
There are no molecules with no energy

What is the Emp? - Correct Answers-Most probable energy

Where is the Emp line on the graph? - Correct Answers-From the peak down to the X-Axis

What does the area under the curve represent? - Correct Answers-The total number of particles
present

Why should the energy distribution never meet the x-axis? - Correct Answers-Because there is
no maximum energy for molecules

What is the label for the y-axis? - Correct Answers-Number of molecules within a given energy

What is the label for the x-axis? - Correct Answers-Energy

What happens to the particles when the temperature is increased? - Correct Answers-More
particles will have energy greater than the activation energy

What does Ea stand for? - Correct Answers-Activation energy

What happens to the peak of the Maxwell Boltzmann distribution when the temperature is
increased? - Correct Answers-It moves to a higher energy with a lower height

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Uploaded on: June 13, 2025
Number of pages: 3
Written in: 2024/2025
Type: Exam (elaborations)
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