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1.2 Atomic structure

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Question 21
H

A water molecule is about 0.3 nm across.

A human hair is about 0.03 mm wide.

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

About how many times wider is the hair than the water molecule?

[1]
A

1×10−11\times10^{-1}1×10−1

B

1×1051\times10^{5}1×105

C

1×1061\times10^{6}1×106

D

1×1081\times10^{8}1×108

Markscheme

1.2 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 Atomic structure

101 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.

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