Exam code: 5070
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9.2 Uses of Metals
Copper is sometimes used to make cooking utensils and pans.
Three properties of copper are shown below:
1 | Good conductor of electricity. |
2 | Corrosion resistant. |
3 | Good conductor of heat. |
Which of these properties make it good for making cooking utensils?
1 and 3
1 only
2 and 3
2 only
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The table shows some properties of four metals
Which of the four metals would be the most suitable for aircraft construction?
| density | strength | resistance to corrosion |
A | high | low | low |
B | low | high | high |
C | high | high | low |
D | low | low | high |
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The three statements below about aluminium are all correct.
1 | Aluminium reacts readily to form aluminium oxide |
2 | Aluminium is extracted from its ore by electrolysis as it cannot be extracted by reduction with carbon |
3 | Aluminium is used in electrical wiring because of its good electrical conductivity |
In which of these statements can 'aluminium' be replaced by 'copper' and still be correct?
| 1 | 2 | 3 |
A | ✓ | ✓ | ✓ |
B | ✗ | ✓ | ✗ |
C | ✓ | ✗ | ✓ |
D | ✗ | ✗ | ✓ |
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