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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Electrolysis

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3

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2

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Electrolysis

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Paper 3Theory (Core)2 marks

Electrolytic cells are used in various applications, including electroplating and the extraction of metals.

Description

Electrolytic Cell Components

An electrolytic cell consists of an anode, a cathode, and an electrolyte. The anode is the positive electrode, while the cathode is the negative electrode. The electrolyte can be either molten or aqueous.

  1. a

    Describe the roles of the anode and cathode in an electrolytic cell.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Electrolysis

Paper 3Theory (Core)3 marks

Description

Electrolytic Cell Function

In an electrolytic cell, the electrolyte is the medium that allows the conduction of electricity, while the anode and cathode serve as the sites for oxidation and reduction reactions, respectively.

  1. a

    Explain the importance of the electrolyte in the functioning of an electrolytic cell.

    Aim for approximately 3 distinct marking points.

    [3]