A company is choosing a material for a drinks container.
The table shows some data from a life-cycle assessment.
| Material | Mass of one container (g) | Energy needed to make the material (MJ/kg) |
|---|---|---|
| Aluminium | 15 | 160 |
| Glass | 350 | 14 |
| PET (a polymer) | 30 | 85 |
| Steel | 55 | 35 |
Which container needs the least energy to make?
Aluminium
Glass
PET
Steel
61 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.