A recycler partly sorts metal recovered from discarded office equipment. The metal is then melted and reformed into cable trays. Why might the recycler decide not to separate every type of metal?
The partly sorted metal may already provide the properties required for cable trays
Melting the partly sorted metal may restore every metal to its original purity
Separating metals is needed only when products are reused, not recycled
The purity needed for the cable trays may be determined by the metal's previous use
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.