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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 1
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This question is about carbon dioxide.

a.

Which type of substance is carbon dioxide?

  • Compound
  • Element
  • Mixture
[1]
b.

A sample of 44 g44\text{ g}44 g of carbon dioxide contains 6.02×10236.02 \times 10^{23}6.02×1023 molecules. Which expression is used to calculate the mass of one molecule of carbon dioxide in grams?

  • 446.02×1023\frac{44}{6.02 \times 10^{23}}6.02×102344​
  • 6.02×102344\frac{6.02 \times 10^{23}}{44}446.02×1023​
  • 44×6.02×102344 \times 6.02 \times 10^{23}44×6.02×1023
[1]
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

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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