This question is about metals and their properties.
The table below shows some physical and chemical properties of three metals.
| Metal | Density (g/cm3\text{g/cm}^3g/cm3) | Relative electrical conductivity (0=low,10=high0 = \text{low}, 10 = \text{high}0=low,10=high) | Relative strength (1=low,10=high1 = \text{low}, 10 = \text{high}1=low,10=high) | Corrosion in outdoor air | Cost per tonne (£££) |
|---|---|---|---|---|---|
| Aluminium | 2.72.72.7 | 666 | 444 | Does not corrode | 180018001800 |
| Copper | 8.98.98.9 | 101010 | 555 | Corrodes very slowly | 750075007500 |
| Lead | 11.311.311.3 | 111 | 111 | Does not corrode | 200020002000 |
Which metal in the table is the most suitable to make high-voltage overhead power cables? Explain your answer using information from the table.
Copper can be alloyed with another metal to make brass. Which metal is mixed with copper to make brass?
A student investigates the conditions required for an iron nail to rust. They set up three test tubes:
Predict which tube will contain a rusted nail after one week. Explain your answer by referencing the conditions present or absent in each of the three tubes.
State and explain one method used to prevent large outdoor iron structures from rusting.
48 exam-style questions on OCR GCSE Chemistry Properties of materials. Each one has a worked solution and a mark scheme showing where the marks go.