Cambridge IGCSE Chemistry practice

Paper 4 structured question: Exothermic and endothermic reactions

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Paper

Marks

Topic

Exothermic and endothermic reactions

Exam-style question

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Paper 4Theory (Extended)1 marks

Consider the following reaction pathway diagram for a chemical reaction.

Diagram Description

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

a
State the type of reaction represented in the diagram.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 4Theory (Extended)1 marks

Diagram Description

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

a
State the enthalpy change (H) for the reaction.
Your answer
Aim for approximately 1 distinct marking point.
[1]