A cubic nanoparticle has a volume of 27 nm327\ \text{nm}^327 nm3.
What is the surface area to volume ratio of this nanoparticle, in its simplest whole number form?
1:21 : 21:2
6:16 : 16:1
2:12 : 12:1
1:61 : 61:6
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.