A company makes plastic drainage pipes. The plastic is produced from crude oil.
The table shows three processes in the life cycle of a pipe.
| Process | Activity |
|---|---|
| P | Drilling into rock to obtain crude oil |
| Q | Shaping plastic into a pipe |
| R | Putting the pipe into packaging |
Which process is part of obtaining the raw materials for the pipe?
An original pipe contains 4.0 kg of plastic.
A new pipe contains 15% less plastic than the original pipe.
The energy used to obtain and process the raw materials is 6.0 MJ per kilogram of plastic.
Calculate the reduction in energy used to obtain and process the raw materials for 500 new pipes.
Give one environmental benefit, other than reducing energy use, at the raw materials stage of making the new pipes.
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.