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
Practise OCR GCSE Chemistry Properties of materials with exam-style questions for Foundation and Higher tier. 60 questions, matched to the OCR GCSE Chemistry (J248) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.