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2.3 Properties of materials

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Question 21
F

A nanoparticle is a cube with sides of length 3 nm.

Each atom in the nanoparticle has a radius of 1 × 10-10 m.

1 nm=1×10−9 m 1\ \mathrm{nm} = 1\times10^{-9}\ \mathrm{m} 1 nm=1×10−9 m

Estimate the number of atoms in the nanoparticle.

[1]
A

27 000

B

3375

C

225

D

15

Markscheme

2.3 Properties of materials Questions

  1. GCSE
  2. /Chemistry
  3. /2.3 Properties of materials

60 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.

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