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1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 25
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Two atoms are isotopes of the same element. Which statement about these two atoms is correct?

[1]
A

They have the same mass number but different numbers of protons

B

They have different numbers of protons and different numbers of electrons

C

They have the same number of neutrons but different numbers of protons

D

They have the same number of protons but different mass numbers

Markscheme

1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

40 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1a Atoms, elements and compounds, 1.1.1b Half equations and ionic equations, 1.1.2 Mixtures, 1.1.3 The development of the model of the atom (common content with physics), 1.1.4 Relative electrical charges of subatomic particles, 1.1.5 Size and mass of atoms, 1.1.6 Relative atomic mass, and 1.1.7 Electronic structure. Each one has a worked solution and a mark scheme showing where the marks go.

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