Some bottles are made from a mixture of different plastics. Why is this type of bottle difficult to recycle?
Plastics cannot be melted without decomposing completely
Plastics that are made from crude oil cannot be recycled
The different plastics must be separated before melting
The bottles must be heated with carbon to remove oxygen
40 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.