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Cambridge IGCSE Combined Science practice

Which statement is true about activation energy?

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Show answerExothermic and endothermic reactions revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

Exothermic and endothermic reactions

Exam-style question

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Which statement is true about activation energy?.

  1. A.It is constant for all reactions
  2. B.It can be affected by catalysts
  3. C.It is always low
  4. D.It is not important for reaction rates

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Paper 4 structured question: Exothermic and endothermic reactions

Paper 4Theory (Extended)1 marks

Description

Activation Energy in Reactions

Activation energy is the minimum energy required for colliding particles to initiate a reaction. It plays a crucial role in determining the rate of chemical reactions.

  1. a

    Define activation energy.

    Aim for approximately 1 distinct marking point.

    [1]