Question 5
FFigure shows the energy used at each stage in the life of one paper bag and of one plastic bag.
Figure: The energy used at each stage in the life of one paper bag and one plastic bag
a.[1]
Give the energy used in the manufacturing stage for the paper bag.
b.[2]
Calculate the total energy used in the life cycle of one plastic bag.
c.[1]
A student concludes that plastic bags are always better for the environment than paper bags. Give one reason why this conclusion may not be valid.
d.[2]
Explain why the disposal stage of the plastic bag may have a greater impact on the environment than the figure suggests.
10.2 Life cycle assessment and recycling Questions
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.