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10.3 Using materials

10.3 Using materials

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Question 1

The proportion of gold in an alloy is measured in carats:

  • Pure gold is 24 carat (100% gold).
  • 12 carat gold contains 50% gold by mass.

Table 1 shows information about two dental crowns, X and Y, made from alloys containing only gold and copper.

Complete Table 1 by finding the missing values represented by the question marks.

Table 1

Dental crownCaratMass of gold in gramsMass of copper in grams
X?168
Y1510?
[4]
Markscheme

10.3 Using materials Questions

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

18 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.

Question bank