A costume workshop can use cotton, wool, polyester or nylon fibres.
Which of these changes would replace a natural fibre with a synthetic fibre?
Using cotton instead of nylon
Using nylon instead of polyester
Using polyester instead of wool
Using wool instead of cotton
87 exam-style questions on AQA GCSE Chemistry 10.1 Using the Earth's resources and obtaining potable water, covering 10.1.1 Using the Earth's resources and sustainable development, 10.1.2 Potable water, 10.1.3 Waste water treatment, and 10.1.4 Alternative methods of extracting metals. Each one has a worked solution and a mark scheme showing where the marks go.