Cambridge IGCSE Chemistry practice

Paper 3 structured question: Corrosion of metals

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Paper

Marks

Topic

Corrosion of metals

Exam-style question

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Paper 3Theory (Core)1 marks

Understanding the process of rusting is important for material preservation.

Description

The rusting of iron involves an electrochemical reaction that produces hydrated iron(III) oxide.

a
State the product formed when iron rusts.
Your answer
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[1]

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Paper 3Theory (Core)1 marks

Description

Iron and steel are often used in construction and manufacturing. When exposed to moisture and air, they can rust, leading to structural weaknesses.

a
State the two conditions necessary for rusting to occur.
Your answer
Aim for approximately 1 distinct marking point.
[1]