O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2012 · Q251 Mark
Metallic objects may be decorated by having very thin layers of gold applied to them. Which properties of gold make it suitable for this use? Properties table: | | it conducts electricity | it is malleable | it is unreactive | A | X | ✓ | ✓ | B | ✓ | X | ✓ | C | ✓ | ✓ | X | D | ✓ | ✓ | ✓ |
Ait conducts electricity: X, it is malleable: ✓, it is unreactive: ✓
Bit conducts electricity: ✓, it is malleable: X, it is unreactive: ✓
Cit conducts electricity: ✓, it is malleable: ✓, it is unreactive: X
Dit conducts electricity: ✓, it is malleable: ✓, it is unreactive: ✓
✓ Correct answer
A: it conducts electricity: X, it is malleable: ✓, it is unreactive: ✓
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