Cambridge IGCSE Combined Science practice

Paper 3 structured question: Alloys and their properties

Try the question first, then check the answer and practise the same topic again.

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Paper

Marks

Topic

Alloys and their properties

Exam-style question

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Paper 3Theory (Core)3 marks

Alloys are used in various applications due to their unique properties.

Description

Alloys are often stronger and more resistant to corrosion than their component metals, making them suitable for construction and manufacturing.

a
Explain Why are alloys preferred over pure metals in construction?
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 3Theory (Core)2 marks

Diagram Description

The diagram shows the arrangement of atoms in a steel alloy, highlighting the presence of carbon atoms within the iron matrix.

a
Analyse Describe the significance of the carbon atoms in the structure of steel.
Your answer
Aim for approximately 2 distinct marking points.
[2]