Two floor coverings are expected to last for the same length of time and cover the same area. A company compares the energy used for each square metre of the floor coverings.
| Stage | Energy used for floor covering A in MJ per m² | Energy used for floor covering B in MJ per m² |
|---|---|---|
| Obtaining raw materials | 22 | 28 |
| Manufacture and packaging | 44 | 35 |
| Use | 12 | 10 |
The company claims that floor covering B has a lower environmental impact over its whole life than floor covering A.
Evaluate the company's claim.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.