Skip to content

Course home

Question bank·2.4 Bulk and surface properties of matter including nanoparticles
Sign up

2.4 Bulk and surface properties of matter including nanoparticles

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758
Question 39

A manufacturer tests two deodorant formulations. Each formulation contains the same antibacterial substance and is tested under the same conditions.

FormulationParticle size of antibacterial substanceMass of antibacterial substance in 100 g of deodorant (g)Mean decrease in bacterial population after 8 hours (%)
NNanoparticles0.1581
LLarger particles1.5079
a.

Compare the results for formulations N and L.

[2]
b.

Explain how the particle size of the antibacterial substance in formulation N could account for these results.

[2]
Markscheme

2.4 Bulk and surface properties of matter including nanoparticles Questions

  1. GCSE
  2. /Chemistry
  3. /2.4 Bulk and surface properties of matter including nanoparticles

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.

More questions