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2.4 Bulk and surface properties of matter including nanoparticles

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Question 10

Two airborne particles, R and S, are separated according to their diameter.

ParticleDiameter
R7.5 × 10-8 m
S1500 nm1500\ \text{nm}1500 nm

The separator sends particles with diameters less than 5.0 × 10-7 m into outlet 1. All other particles enter outlet 2.

a.

Compare the sizes of particles R and S. In your answer, identify the particle category of each and calculate how many times larger the diameter of one particle is than the diameter of the other.

[3]
b.

Explain which outlet each particle enters.

[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.

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