A cube-shaped nanoparticle has sides of 20 nm. A cube-shaped fine particle of the same substance has sides of 2 μm\mu\mathrm{m}μm. (1 μm\mu\mathrm{m}μm = 1000 nm)
How many times greater is the surface area to volume ratio of the nanoparticle than that of the fine particle?
10 times
1×1041\times10^{4}1×104 times
100 times
1×1061\times10^{6}1×106 times
36 exam-style questions on Edexcel GCSE Chemistry 10.5 Bulk and surface properties of matter including nanoparticles, covering 10.5.1 Nanoparticles: size, uses and risks and 10.5.2 Comparing and selecting materials. Each one has a worked solution and a mark scheme showing where the marks go.