This question is about brass.
Brass is an alloy of copper and zinc.
What is meant by an alloy?Â
Table 1 shows the percentages of zinc and copper in two types of brass.Â
Table 1
 |  Copper (%) | Zinc (%) |
 Yellow brass | 65 | X |
 Red brass | 92 | 8 |
Calculate value X in the table.Â
Calculate the mass of copper in 200 g of red brass.Â
Which is a use of brass?
Circle one answer.
Making jewellery | Making ornaments | Making cutlery |
Why is the yellow brass harder than red brass?
Use Table 1 to help you.
Tick (✓) two boxes.
 The layers are more distorted |  |
 It contains more zinc |  |
 It contains more copper |  |
 The layers can more easily slide over each other |  |
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