This question is about alloys.
Which metal is the main constituent of bronze? Select one option:
Which two metals are commonly mixed with gold in jewellery alloys? Select two options:
Give two properties of gold alloys that make them suitable for jewellery. Choose from the list:
Table 1 shows information about some alloys of aluminium.
Table 1
| Aluminium alloy | Other elements in alloy | Strength | Used in |
|---|---|---|---|
| D1 | 4.0% copper, 1.5% magnesium | high | aircraft structures, racing car parts |
| D2 | 1.2% manganese | medium | beverage cans, cooking foil |
| D3 | 1.0% magnesium, 1.5% lead | medium | machinery parts |
Calculate the mass of aluminium in 8.0 kg8.0 \text{ kg}8.0 kg of aluminium alloy D1. Use Table 1.
Suggest why alloy D1 is used to make aircraft structures. Use Table 1.
Alloys used for food and drink containers must not contain toxic elements. Suggest why alloy D3 is not used to make beverage cans. Use Table 1.