A water-treatment company tests two cartridges containing particles of the same substance. Dissolved pollutant sticks to the exposed surface of the particles. The cartridges contain the same total volume of the solid substance. One cartridge contains nanoparticles and the other contains larger particles. All other conditions are the same, and there is more pollutant than either cartridge can remove.
Which cartridge is expected to remove more pollutant, and why?
Both cartridges will remove the same amount because they contain the same total volume of substance
A difference cannot be predicted because both cartridges contain the same substance
The nanoparticle cartridge will remove more pollutant because it has a greater total exposed surface area
The larger-particle cartridge will remove more pollutant because each particle has a larger surface
104 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.