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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Exothermic and endothermic reactions

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Exothermic and endothermic reactions

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Paper 4Theory (Extended)1 marks

Analyze the following reaction pathway diagram for an endothermic reaction.

Diagram Description

Endothermic Reaction Pathway

The diagram illustrates the energy levels of reactants and products, highlighting the activation energy and enthalpy change.

  1. a

    State the enthalpy change (H) for the reaction.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 4 structured question: Exothermic and endothermic reactions

Paper 4Theory (Extended)1 marks

Diagram Description

Reaction Pathway Diagram

The diagram shows the energy levels of reactants and products, along with the activation energy and enthalpy change.

  1. a

    State the type of reaction represented in the diagram.

    Aim for approximately 1 distinct marking point.

    [1]