An atom of gold has a diameter of 0.29 nm0.29\ \text{nm}0.29 nm. A nanoparticle of gold has a diameter of 15 nm15\ \text{nm}15 nm.
Calculate how many times larger the diameter of the nanoparticle is than the diameter of the atom.
Give your answer to 2 significant figures.
Give the diameter of the gold nanoparticle in metres.
Give your answer in standard form.
40 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.