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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 16
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Oxygen has atomic number 8. A sample of oxygen contains oxygen-16 atoms and oxygen-18 atoms.

Which statement about the nuclei of these two types of oxygen atom is correct?

[1]
A

Both nuclei contain 8 protons, but oxygen-18 contains two more neutrons.

B

Both nuclei contain 8 protons and both nuclei contain 8 neutrons.

C

Oxygen-16 contains 16 neutrons, while oxygen-18 contains 18 neutrons.

D

Oxygen-16 contains 16 protons, while oxygen-18 contains 18 protons.

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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

93 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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