Lesson 4.2.4.1

4.2.4.1 Sizes of particles and their properties Quiz: AQA Chemistry, Unit 2

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.2.4.1, Sizes of particles and their properties: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 2: Bonding, structure, and the properties of matter, written with Revision Ninja.

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The 20 questions

  1. What size range defines nanoscience structures?

    • 100 to 2500 nm
    • 1 to 100 nm
    • 1 to 100 mm
    • 1 to 10 nm

  2. What is the diameter range of a nanoparticle in metres?

    • 1 x 10^-3 m to 1 x 10^-1 m
    • 1 x 10^-9 m to 1 x 10^-7 m
    • 1 x 10^-12 m to 1 x 10^-10 m
    • 1 x 10^-6 m to 1 x 10^-4 m

  3. When a cube's side decreases by a factor of 10, how does its surface area to volume ratio change?

    • Decreases 10 times
    • Increases 10 times
    • Increases 100 times
    • Remains completely unchanged

  4. Why do nanoparticles often exhibit different properties from bulk materials?

    • Low surface area ratio
    • High surface area ratio
    • Low melting point
    • High volume ratio

  5. Why are smaller quantities of nanoparticles often effective?

    • Higher electrical resistance
    • Larger relative surface area
    • Smaller relative volume
    • Lower particle density

  6. What is the typical size range of nanoparticles in terms of atoms?

    • Billions of atoms
    • A single atom
    • Millions of atoms
    • A few hundred atoms

  7. If a cube's side is reduced from 1 mm to 0.1 mm, how does its surface area to volume ratio change?

    • Stays the same
    • Decreases by 10
    • Increases by 100
    • Increases by 10

  8. Convert 1 x 10^-7 m into nanometres.

    • 10 nm
    • 1000 nm
    • 100 nm
    • 1 nm

  9. Convert 2500 nm into metres.

    • 2.5 x 10^-3 m
    • 2.5 x 10^-7 m
    • 2.5 x 10^-6 m
    • 2.5 x 10^-9 m

  10. Which particle is in the nanoscale range?

    • A 1 mm particle
    • A 250 nm particle
    • A 40 nm particle
    • A 2 micrometre particle

  11. What is the typical size range of nanoparticles in nanometres?

    • 100 to 2500
    • 0.1 to 1
    • 1 to 100
    • 1000 to 5000

  12. The side of a cube decreases from 100 nm to 10 nm. By what factor does its surface area to volume ratio change?

    • 10
    • 2
    • 100
    • 1000

  13. Roughly how big is a single atom?

    • About 1000 nm
    • About 100 nm
    • About 0.1 nm
    • About 1 mm

  14. What physical property ratio is exceptionally high in nanoparticles?

    • Length to width
    • Density to volume
    • Surface area to volume
    • Mass to weight

  15. If a cube's side length decreases by a factor of 10, what happens to its surface area to volume ratio?

    • Stays the same
    • Increases a hundredfold
    • Increases tenfold
    • Decreases tenfold

  16. Convert 50 nm into metres.

    • 5 x 10^-6 m
    • 5 x 10^-7 m
    • 5 x 10^-9 m
    • 5 x 10^-8 m

  17. What effect does a high surface area to volume ratio have?

    • Decreased chemical reactivity
    • No effect on rate
    • Slower per unit volume
    • Faster per unit volume

  18. What does the prefix 'nano' mean?

    • One thousandth
    • One hundredth
    • One millionth
    • One billionth

  19. For a cube of side 1 nm, what is its surface area to volume ratio in nm^-1?

    • 6 per nm
    • 1 per nm
    • 3 per nm
    • 36 per nm

  20. A nanoparticle has a diameter of 20 nm. How many times larger is it than 0.2 nm?

    • 100 times
    • 10 times
    • 1000 times
    • 20 times

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