Modern smart glass windows are often coated with a thin layer of titanium dioxide (TiO2\text{TiO}_2TiO2) nanoparticles to make them 'self-cleaning' when exposed to sunlight.
Explain two reasons why nanoparticles of titanium dioxide are preferred for this coating over normal (bulk) titanium dioxide.
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.
