Question 2(d)
[Maximum number: 2]
Boron and aluminium are Group III elements.
State two physical properties of aluminium that make it suitable for use in overhead electrical cables.
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CAIE IGCSE Chemistry 9.2.1 Metal uses to properties: aluminium
Practise matching aluminium uses to physical properties, from low-density aircraft parts to overhead cables and food containers.
How this is tested
- link aircraft manufacture to aluminium's low density rather than conductivity or recycling
- choose aluminium for overhead cables using both low density and good electrical conductivity
- recognise aluminium in food containers and relate its use to resistance to corrosion