Many modern sunscreens contain zinc oxide nanoparticles to provide protection against UV radiation.
Which statement describes the size of a nanoparticle?
smaller than a single atom
similar to the size of a human cell
a size containing a few hundred atoms
a size containing several million molecules
Practise Edexcel GCSE Chemistry Bulk and surface properties of matter including nanoparticles with exam-style questions for Foundation and Higher tier. 63 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 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.
