Giant covalent structures: past paper questions

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• Question 6May/June 2026, paper 11Multiple choice1 mark

  Three statements about graphite and diamond are listed. 1 Graphite and diamond both have giant covalent structures. 2 Graphite is used as a lubricant; diamond is not used as a lubricant.

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• Question 6Oct/Nov 2025, paper 11Multiple choice1 mark

  What is a property of diamond?

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• Question 2Oct/Nov 2024, paper 12Multiple choice1 markHas a diagram

  Substance X has a simple molecular structure and substance Y has a giant covalent structure. Which row is correct?

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• Question 6Oct/Nov 2023, paper 11Multiple choice1 mark

  Four statements about graphite, diamond and silicon(IV) oxide are listed. 1 Diamond and silicon(IV) oxide are both very hard and have similar structures. 2 In diamond, each carbon atom is joined to four other carbon atoms.

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• Question 5May/June 2026, paper 12Multiple choice1 mark

  Which substance has a giant covalent structure and contains atoms of more than one element?

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• Question 6Oct/Nov 2025, paper 12Multiple choice1 markHas a diagram

  Which row is correct?

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• Question 6Oct/Nov 2024, paper 12Multiple choice1 mark

  Which substance is not malleable and conducts electricity by the movement of electrons through a lattice of atoms?

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• Question 9Oct/Nov 2023, paper 21Structured9 marks

  Table 9.1 shows the melting points and relative electrical conductivities of three elements.

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• Question 8May/June 2025, paper 12Multiple choice1 mark

  Which statement about silicon(IV) oxide is correct?

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• Question 3Oct/Nov 2024, paper 21Structured6 marksHas a diagram

  Fig. 3.1 shows the apparatus used for the electrolysis of concentrated aqueous sodium chloride using graphite electrodes. Label the cathode on Fig. 3.1.

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• Question 2May/June 2025, paper 21Structured9 marks

  A concentrated aqueous solution of copper(II) bromide is electrolysed using graphite electrodes. Graphite has good electrical conductivity. Explain why graphite has good electrical conductivity.

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• Question 6Oct/Nov 2024, paper 22Structured9 marksHas a diagram

  Fig. 6.1 shows the structures of boron nitride and hydrazine. Boron nitride has a structure similar to diamond. Explain why boron nitride has a high melting point.

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• Question 6May/June 2023, paper 12Multiple choice1 mark

  X is the arrangement of bonds around a carbon atom in graphite. Y is the arrangement of bonds around a carbon atom in diamond. Z is the arrangement of bonds around a silicon atom in silicon(IV) oxide, ${\mathrm{S}\mathrm{i}\mathrm{O}}_2$.

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• Question 2May/June 2025, paper 22Structured9 marks

  A dilute aqueous solution of magnesium chloride is electrolysed using graphite electrodes. Graphite has a high melting point and is inert. Explain why graphite has a high melting point.

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• Question 5May/June 2024, paper 11Multiple choice1 mark

  Statements about graphite and silicon(IV) oxide, ${\mathrm{S}\mathrm{i}\mathrm{O}}_2$, are given. Which statement is correct?

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• Question 1May/June 2023, paper 21Structured6 marks

  Choose from the following oxides to answer the questions.

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• Question 6May/June 2024, paper 12Multiple choice1 markHas a diagram

  The melting points and boiling points of four compounds, W, X, Y and Z, are given in the table.

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• Question 1May/June 2024, paper 21Structured5 marks

  Choose from the following substances to answer the questions. carbon chlorine glucose hydrated copper(II) sulfate iron magnesium sulfate methanoic acid methanol nickel silicon(IV) oxide vanadium(V) oxide Each substance can be used once, more than once or not at all.

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