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Cambridge IGCSE Combined Science practice

What is required for iron to rust?

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Show answerCorrosion of metals revisionRevise the key idea

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MCQ

Type

cambridge_mcq

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Topic

Corrosion of metals

Exam-style question

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What is required for iron to rust?.

  1. A.Only water
  2. B.Only oxygen
  3. C.Both oxygen and water
  4. D.Neither oxygen nor water

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Paper 3 structured question: Corrosion of metals

Paper 3Theory (Core)2 marks

Description

Rusting Process

Iron rusts when it is exposed to moisture and oxygen, leading to the formation of iron oxide.

  1. a

    Explain the conditions necessary for iron to rust.

    Aim for approximately 2 distinct marking points.

    [2]