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10.3 Using materials

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Question 1

A gold alloy used to decorate a picture frame is 20 carat. What percentage of the alloy is made from elements other than gold?

[1]
A

4.0%4.0\%4.0%

B

83.3%83.3\%83.3%

C

80.0%80.0\%80.0%

D

16.7%16.7\%16.7%

Markscheme

10.3 Using materials Questions

  1. GCSE
  2. /Chemistry
  3. /10.3 Using materials

118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.

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