Carbon nanotubes are a type of nanostructure. Some carbon nanotubes have a diameter of 4 nm4\text{ nm}4 nm.
What is 4 nm4\text{ nm}4 nm in metres?
4×10−6 m4 \times 10^{-6}\text{ m}4×10−6 m
4×10−8 m4 \times 10^{-8}\text{ m}4×10−8 m
4×10−9 m4 \times 10^{-9}\text{ m}4×10−9 m
4×10−10 m4 \times 10^{-10}\text{ m}4×10−10 m
48 exam-style questions on OCR GCSE Chemistry Properties of materials. Each one has a worked solution and a mark scheme showing where the marks go.