The newest 5 of 5 written questions. Open one to see it on the real paper.
Explain why Fig. 4.1 represents an alloy.
See it on the paper →Gold alloys cost less than pure gold. State one other reason why gold alloys are used to make jewellery.
See it on the paper →Suggest one reason why aluminium alloys, rather than pure aluminium, are used to make aircraft bodies.
See it on the paper →Describe what is meant by an alloy.
See it on the paper →Recycled metals can cost less than metals extracted from their ores. Suggest one other reason why metals are recycled.
See it on the paper →Candidates had to refer to some features shown in the diagram. Many simply defined the term alloy as ‘a mixture of metals’ or ‘a mixture containing different elements’ without describing evidence from the diagram that reflected this. Answers gaining credit referred in some way to the particles shown in the diagram.
— Examiner report, February/March 2025, 0653/42 Q4(c)(i) (Cambridge)
The idea that a gold alloy would be stronger or more durable than pure gold was generally known.
— Examiner report, February/March 2025, 0653/42 Q4(c)(ii) (Cambridge)
This question was generally answered well. Most candidates realised that aluminium alloys are stronger or less dense than pure aluminium.
— Examiner report, October/November 2023, 0653/31 Q5(c)(ii) (Cambridge)
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