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2.4 Bulk and surface properties of matter including nanoparticles

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Question 3

A material contains particles that absorb water. The table gives the diameter of a dry particle P and the diameter of one of the atoms in the material.

ObjectDiameter
Dry particle P6.3 × 10-8 m
Atom0.21 nm0.21\ \text{nm}0.21 nm
a.

Calculate the ratio of the diameter of dry particle P to the diameter of the atom. Show your working.

[2]
b.

After absorbing water, the diameter of particle P increases by 80%. Explain whether the swollen particle is a nanoparticle.

[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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