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IGCSE Chemistry 0620 · Atoms, elements and compounds · 2.6

Giant covalent structures: past paper questions

25 real questionsasked in 6 of the last 10 exam series2019–2026usually: Name, Identify, State, Complete, Which

Real questions on giant covalent structures

The newest 20 of 25 written questions. Open one to see it on the real paper.

  1. 0620/42 · May/June 2026 · Q2b(ii)[1]

    Name a substance that has a giant covalent lattice and similar properties to silicon( IV ) oxide.

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  2. 0620/31 · October/November 2025 · Q1b[1]

    is present in diamond

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  3. 0620/43 · October/November 2025 · Q2b(i)[3]

    Identify which substance, A, B, C, D, E, F or G, has a giant covalent structure. Use the information in Table 2.1 to give two reasons for your choice. substance reason

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  4. 0620/42 · May/June 2025 · Q2c(i)[1]

    Name a giant covalent structure of carbon which conducts electricity.

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  5. 0620/42 · May/June 2025 · Q2c(ii)[1]

    Identify the particles responsible for the conduction of electricity in this covalent structure of carbon.

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  6. 0620/42 · May/June 2025 · Q2c(iii)[2]

    Silicon( IV ) oxide contains silicon atoms, Si, and oxygen atoms, O. Fig. 2.2 shows part of the giant covalent structure of silicon( IV ) oxide. Complete the diagram in Fig. 2.2 by adding the symbol for each of the 9 atoms shown. Fig. 2.2

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  7. 0620/43 · May/June 2025 · Q1a[1]

    is a compound with a giant covalent structure

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  8. 0620/31 · October/November 2024 · Q2d(i)[1]

    State one other use of graphite.

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  9. 0620/43 · October/November 2024 · Q1g[1]

    is a compound with a giant covalent structure

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  10. 0620/33 · May/June 2024 · Q1a(iii)[1]

    a giant covalent structure

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  11. 0620/33 · May/June 2024 · Q1a(iv)[1]

    a compound that has a high melting point

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  12. 0620/43 · May/June 2024 · Q3a(i)[1]

    Explain why graphite conducts electricity when solid.

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  13. 0620/43 · May/June 2024 · Q3a(iv)[3]

    Explain in terms of structure and bonding why graphite has a much higher melting point than carbon monoxide.

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  14. 0620/33 · October/November 2023 · Q8e(i)[1]

    Name the type of bonding in diamond.

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  15. 0620/33 · October/November 2023 · Q8e(ii)[1]

    Use Fig. 8.2 to explain why diamond is used in cutting tools.  [Total: 12]

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  16. 0620/43 · May/June 2023 · Q3c(ii)[2]

    Explain, in terms of structure and bonding, why silicon( IV ) oxide has a high melting point.  [Total: 10]

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  17. 0620/11 · October/November 2022 · Q7[1]

    Which row describes the bonding in graphite and a use of graphite?

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  18. 0620/32 · October/November 2022 · Q1a(ii)[1]

    an element with a giant covalent structure

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  19. 0620/42 · October/November 2022 · Q1a[1]

    the number of covalent bonds each carbon atom has in diamond.

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  20. 0620/42 · February/March 2022 · Q1d[1]

    forms an oxide with a giant covalent structure ��������������������������������������������������������������������

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What examiners said

Most candidates recognised graphite as the giant structure of carbon which conducts electricity.

— Examiner report, May/June 2025, 0620/42 Q2(c)(i) (Cambridge)

Most candidates realised that electrons were the particles responsible for conduction of electricity.

— Examiner report, May/June 2025, 0620/42 Q2(c)(ii) (Cambridge)

Many candidates struggled to complete this diagram of the structure of SiO 2. Many did not read the question that silicon atoms had the symbol ‘Si’ and oxygen atoms had the symbol ‘O’. Many diagrams featured symbols such as ‘S’, ‘Si4+’, ‘O2–’ and ‘O2’. The idea that Si would have four bonds and O would have two bonds was rarely known.

— Examiner report, May/June 2025, 0620/42 Q2(c)(iii) (Cambridge)

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Giant covalent structures — IGCSE Chemistry 0620 past paper questions | AssessPro