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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Corrosion of metals

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3

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2

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Topic

Corrosion of metals

Exam-style question

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Paper 3Theory (Core)2 marks

Iron is often used in construction and manufacturing.

Description

Importance of Rust Prevention

Preventing rust is crucial for maintaining the integrity of iron structures.

  1. a

    Describe two barrier methods used to prevent rusting.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Corrosion of metals

Paper 3Theory (Core)2 marks

Description

Barrier Methods for Rust Prevention

Barrier methods are used to protect iron from rusting by preventing contact with moisture and oxygen.

  1. a

    Explain how barrier methods work to prevent rusting.

    Aim for approximately 2 distinct marking points.

    [2]