Cambridge IGCSE Combined Science practice

Paper 3 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 3Theory (Core)2 marks

The role of exothermic reactions in energy production.

Description

Exothermic reactions are crucial in energy production, such as in power plants and engines. They provide the necessary heat to generate energy.

a
Discuss the importance of exothermic reactions in energy production.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)2 marks

Description

Exothermic reactions are common in various processes, such as combustion and respiration. They release thermal energy, which can be felt as heat.

a
Explain the concept of exothermic reactions and provide an example.
Your answer
Aim for approximately 2 distinct marking points.
[2]