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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Cells, batteries, generators and motors

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Cells, batteries, generators and motors

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Paper 3Theory (Core)2 marks

The role of chemical reactions in energy conversion.

Description

Chemical Reactions in Batteries

The chemical reactions in batteries are essential for converting stored energy into usable electrical energy.

  1. a

    Describe the importance of chemical reactions in batteries.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Cells, batteries, generators and motors

Paper 3Theory (Core)3 marks

Description

Energy Conversion in Batteries

Batteries convert stored chemical energy into electrical energy through electrochemical reactions. This process involves the movement of electrons, which generates an electric current.

  1. a

    Explain how batteries convert chemical energy into electrical energy.

    Aim for approximately 3 distinct marking points.

    [3]