A car panel has a volume of 2000 cm3\mathrm{cm^{3}}cm3. It is made from aluminium alloy (density 2.7 g cm−3\mathrm{g\,cm^{-3}}gcm−3). A designer replaces it with an identical panel made from carbon fibre composite (density 1.6 g cm−3\mathrm{g\,cm^{-3}}gcm−3).
By how much does the mass of the panel decrease?
3.2 kg
2.2 kg
5.4 kg
22 kg
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.