AQA GCSE Chemistry Unit 2.4

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How can we measure the rate of a chemical reaction?

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True or false? The rate of reaction can be found by the equation time/amount of reactant used or product formed.

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Which theory states that reactions can only occur if reactants come into contact with one another?

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True or false? The activation energy is the smallest amount of energy needed for a reaction to take place.

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Which factor increasing reaction rate would explain why a powder reacts more quickly than a lump of solid?

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Why do particles at high temperature react more frequently?

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True or false? If the reaction conditions are increased by 10°C, the rate of reaction will double.

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True or false? Increasing the pressure lowers the rate of reaction as there are fewer particles in a given space.

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Which of these is likely to have the highest rate of reaction?

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True or false? Catalysts can only be used once.

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What do catalysts do to speed up the rate of reaction?

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Which of these are being developed as potential new catalysts?

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True or false? Although transition metals are useful catalysts, their compounds are often toxic.

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True or false? Exothermic reactions make the surroundings colder.

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Which of these are exothermic reactions?

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Which of these are endothermic reactions?

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True or false? A reversible reaction which is exothermic in the forward direction is exothermic in the backward direction.

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Twenty questions on the fourth section of Unit 2 in AQA GCSE Chemistry: Rates and energy.

AQA GCSE Chemistry Unit 2.4

How can we measure the rate of a chemical reaction?

True or false? The rate of reaction can be found by the equation time/amount of reactant used or product formed.

Which theory states that reactions can only occur if reactants come into contact with one another?

True or false? The activation energy is the smallest amount of energy needed for a reaction to take place.

Which factor increasing reaction rate would explain why a powder reacts more quickly than a lump of solid?

Why do particles at high temperature react more frequently?

True or false? If the reaction conditions are increased by 10°C, the rate of reaction will double.

True or false? Increasing the pressure lowers the rate of reaction as there are fewer particles in a given space.

Which of these is likely to have the highest rate of reaction?

True or false? Catalysts can only be used once.

What do catalysts do to speed up the rate of reaction?

Which of these are being developed as potential new catalysts?

True or false? Although transition metals are useful catalysts, their compounds are often toxic.

True or false? Exothermic reactions make the surroundings colder.

Which of these are exothermic reactions?

Which of these are endothermic reactions?

True or false? A reversible reaction which is exothermic in the forward direction is exothermic in the backward direction.

True or false? Reversible reactions have exactly the same amount of energy lost or gained in both directions.

Which of these is an application of exothermic reactions?

Which of these is an application of endothermic reactions?