Cambridge IGCSE · Chemistry (0620)

Alloys and their properties: Practice Questions

4 multiple-choice questions marked as you go, and 4 written questions with worked solutions. All on Alloys and their properties.

8 questions18 marksFree, no account

Question 1

1 mark

What is the best description of an alloy?

Question 2

1 mark

Why is brass harder and stronger than pure copper?

Question 3

1 mark

Stainless steel is an alloy used to make cutlery and surgical instruments because it does not rust.
Which elements are typically mixed with iron to produce stainless steel?

Question 4

1 mark

The diagram represents the arrangement of atoms in an alloy.
Which statement correctly explains, in terms of structure, why this arrangement makes the alloy harder than a pure metal?

Question 5

2 marks

Explain, in terms of structure, why alloys are harder and stronger than pure metals.

Write your answer out first, then check it against the worked solution.

Question 6

3 marks

State the two primary elements that compose the alloy brass and identify one physical advantage it has over pure copper.

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Question 7

5 marks

In a diagram showing the microscopic structure of an alloy, atoms of different sizes are present. Explain how this specific arrangement makes alloys harder than pure metals.

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Question 8

4 marks

The diagram represents the arrangement of atoms in a sample of pure iron and a sample of stainless steel.
(a) Identify the type of substance represented by stainless steel and name the main element added to iron to create it.
(b) Explain, in terms of their structures, why stainless steel is harder and stronger than pure iron.

Write your answer out first, then check it against the worked solution.

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