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Course: Edexcel Modular – OL (Chemistry)
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Edexcel Modular – OL (Chemistry)

1. Principles of Chemistry

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2. Inorganic Chemistry

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3. Physical Chemistry

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4. Organic Chemistry

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Quiz

Rates of reaction – Check yourself

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Rates of reaction Edexcel O Level Modular Chemistry check yourself quiz: free practice for Edexcel Modular – OL (chemistry). Work through this Rates of reaction Edexcel O Level Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 3b Rates of reaction — Notes lesson. More practice: Edexcel Modular – OL (chemistry) — all units. Syllabus: Pearson Edexcel International GCSEs.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
What is activation energy?
Energy released by a reaction
Minimum energy needed for a collision to cause reaction
Energy of the products
Kinetic energy of a catalyst
2.
How does a catalyst increase the rate?
Raises the temperature
Increases concentration
Provides a pathway with lower activation energy
Increases particle size
3.
Which change would NOT increase the rate of Mg + HCl?
Using more concentrated acid
Heating the acid
Using magnesium powder
Using a larger flask
4.
On a volume of gas–time graph, the rate is greatest:
at the start
in the middle
at the end
when the line is flat
5.
Why does increasing temperature increase rate?
Particles gain energy so more collisions exceed Ea
Activation energy decreases
More particles are created
Surface area increases
6.
What happens to a catalyst's mass during a reaction?
It decreases
It increases
It stays the same
It becomes zero
7.
Which statement best describes Successful collision?
A collision with energy equal to or greater than the activation energy, which leads to reaction.
Apparatus that collects and measures the volume of gas given off in a reaction.
A substance that speeds up a reaction without being used up, by providing a pathway with lower activation energy.
The minimum energy colliding particles need for a reaction to occur.
8.
Which statement best describes Activation energy?
A substance that speeds up a reaction without being used up, by providing a pathway with lower activation energy.
The total area of a solid exposed to other reactants; larger for powders than lumps.
The minimum energy colliding particles need for a reaction to occur.
How quickly reactants are used up or products are formed, per unit time.
9.
Which statement best describes Catalyst?
How quickly reactants are used up or products are formed, per unit time.
A substance that speeds up a reaction without being used up, by providing a pathway with lower activation energy.
The idea that particles must collide with enough energy (at least the activation energy) to react.
A diagram showing the energy of reactants and products and the activation energy barrier.
10.
Which statement best describes Collision theory?
How quickly reactants are used up or products are formed, per unit time.
The total area of a solid exposed to other reactants; larger for powders than lumps.
The idea that particles must collide with enough energy (at least the activation energy) to react.
The minimum energy colliding particles need for a reaction to occur.
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Part of 3. Physical Chemistry — see every lesson and quiz in this unit.
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