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2.4 Bulk and surface properties of matter including nanoparticles

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Question 46
F

A sun cream contains titanium dioxide, which blocks ultraviolet light.

Which is an advantage of using nanoparticles of titanium dioxide instead of fine particles?

[1]
A

A thicker layer of cream is needed to block the ultraviolet light

B

A larger mass of titanium dioxide is needed for the same effect

C

A larger volume of titanium dioxide is needed for the same effect

D

A thinner layer of cream is needed to block the ultraviolet light

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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