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

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

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Question 4
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This question is about carbon.

a.

Carbon is found in nature as graphite and diamond, consisting solely of carbon atoms bonded together. Which type of substance is carbon?

  • Compound
  • Element
  • Mixture
[1]
b.

A standard sample of carbon-12 has a mass of exactly 12 g12\text{ g}12 g and contains Avogadro's constant, 6.02×10236.02 \times 10^{23}6.02×1023 atoms. Which expression calculates the mass, in grams, of a single carbon-12 atom?

  • 126.02×1023\frac{12}{6.02 \times 10^{23}}6.02×102312​
  • 6.02×102312\frac{6.02 \times 10^{23}}{12}126.02×1023​
  • 12×6.02×102312 \times 6.02 \times 10^{23}12×6.02×1023
[1]
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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

41 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1 Atoms, elements and compounds, 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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