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Structure: Edexcel A‑Level Chemistry questions

Every Edexcel A-Level Chemistry exam question on 2B Structure, 2016–2025, with its mark scheme and examiner’s report.

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2,028 questions

  1. Q2(a)(i)

    June 2025 · AS Paper 1

    3 marks2B Structure
    The whole paper ↗
    June 2025 AS Paper 1, question 2(a)(i): Draw labelled 2-dimensional diagrams showing the structures of both sodium metal and sodium chloride including nine ions in each diagram. (3) sodium metal sodiu

  2. Q2(a)(iii)

    June 2025 · AS Paper 1

    1 mark2B Structure
    The whole paper ↗
    June 2025 AS Paper 1, question 2(a)(iii): The melting temperature of sodium chloride is much higher than that of sodium metal. State what this information shows about the bonding in these two substances

  3. Q2(a)(iv)

    June 2025 · AS Paper 1

    3 marks2B Structure
    The whole paper ↗
    June 2025 AS Paper 1, question 2(a)(iv): Compare and contrast the electrical conductivity of sodium metal with that of sodium chloride, including how the charge is carried. (3)

  4. Q7(d)

    June 2024 · AS Paper 1

    4 marks2B Structure
    The whole paper ↗
    June 2024 AS Paper 1, question 7(d): The table shows the electrical conductivity of some pure substances in the solid and liquid states. Electrical conductivity Substance Solid state Liquid state p

  5. Q8(b)(ii)

    June 2024 · AS Paper 1

    4 marks2B Structure
    The whole paper ↗
    June 2024 AS Paper 1, question 8(b)(ii): Data about two silicon compounds are shown. Name of compound Formula Boiling temperature / K silicon(IV) oxide SiO2 2503 silicon tetrachloride SiCl4 331 Explain

  6. Q4

    June 2023 · Paper 1

    6 marks2B Structure
    The whole paper ↗
    June 2023 Paper 1, question 4: The graph shows the melting temperatures of some elements in Period 3. 1800 1600 1400 1200 Melting 1000 temperature 800 / K 600 400 200 0 Na Mg Al Si P Elements

  7. Q4(a)

    June 2023 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    June 2023 AS Paper 1, question 4(a): In order to melt the magnesium, it must be heated strongly. Explain why the structure of magnesium gives it a high melting temperature. (2)

  8. Q1(d)

    June 2022 · Paper 1

    3 marks2B Structure
    The whole paper ↗
    June 2022 Paper 1, question 1(d): The melting temperatures of two elements in Period 3 are given in the table. Element silicon chlorine Melting temperature / K 1683 172 Explain, in terms of the

  9. Q4(d)(i)

    June 2022 · Paper 1

    1 mark2B Structure
    The whole paper ↗
    June 2022 Paper 1, question 4(d)(i): Which of these substances exists at room temperature as a giant lattice of oppositely charged ions? (1) A Substance P B Substance Q C Substance R D Substance S

  10. Q4(d)(ii)

    June 2022 · Paper 1

    1 mark2B Structure
    The whole paper ↗
    June 2022 Paper 1, question 4(d)(ii): Which of these substances has a high melting temperature, and conducts electricity when solid and when molten? (1) A Substance P B Substance Q C Substance R D S

  11. Q6(a)

    June 2022 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    June 2022 AS Paper 1, question 6(a): Complete the table. (2) Substance Structure Bonding Melting temperature / K silicon(IV) oxide giant covalent 1883 potassium chloride 1043 iron metallic 1808 iod

  12. Q6(b)

    June 2022 · AS Paper 1

    3 marks2B Structure
    The whole paper ↗
    June 2022 AS Paper 1, question 6(b): Explain why the melting temperature of silicon(IV) oxide is much higher than that of iodine, even though the bonding in both is covalent. (3)

  13. Q6(c)

    June 2022 · AS Paper 1

    3 marks2B Structure
    The whole paper ↗
    June 2022 AS Paper 1, question 6(c): Iron and potassium chloride both conduct electricity when molten. However, only iron conducts electricity when solid. Explain these observations. (3)

  14. Q5(a)

    November 2021 · AS Paper 1

    5 marks2B Structure
    The whole paper ↗
    November 2021 AS Paper 1, question 5(a): Iodine and diamond are crystalline solids at room temperature. Explain why diamond has a much higher melting temperature than iodine. (5)

  15. Q5(b)

    November 2021 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    November 2021 AS Paper 1, question 5(b): Graphite is also a crystalline solid at room temperature. Unlike diamond, graphite conducts electricity. Describe the key feature of the bonding of the carbon a

  16. Q7(b)

    October 2020 · AS Paper 1

    6 marks1 Atomic structure and the periodic table2B Structure
    The whole paper ↗
    October 2020 AS Paper 1, question 7(b): The melting temperatures of the Period 2 elements are shown. Symbol of the element Li Be B C(diamond) N O F Ne Melting temperature / K 454 1551 2573 3970 63 55

  17. Q8(b)

    June 2019 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    June 2019 AS Paper 1, question 8(b): Explain why the electrical conductivity of solid potassium bromide is poor but an aqueous solution of potassium bromide is a good electrical conductor. (2)

  18. Q8(c)

    June 2019 · AS Paper 1

    6 marks2B Structure
    The whole paper ↗
    June 2019 AS Paper 1, question 8(c): Graphene, graphite and diamond are all forms of solid carbon. Explain, in terms of structure and bonding, why graphene and graphite are good electrical conducto

  19. Q8(d)

    June 2019 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    June 2019 AS Paper 1, question 8(d): Deduce two possible reasons why the density of iron (7.86 g cm−3) is much greater than the density of graphite (2.2 to 2.8 g cm−3). (2)

  20. Q8(e)

    June 2019 · AS Paper 1

    2 marks2B Structure
    The whole paper ↗
    June 2019 AS Paper 1, question 8(e): The compressive strength is a measure of the energy required to break some of the bonds within a substance. Deduce possible reasons why there are two widely dif
All 26 questions on Structure, as a list
  1. June 2025, AS Paper 1, Q2(a)(i) (3 marks): Draw labelled 2-dimensional diagrams showing the structures of both sodium metal and sodium chloride including nine ions in each diagram. (3) sodium metal sodiu
  2. June 2025, AS Paper 1, Q2(a)(iii) (1 mark): The melting temperature of sodium chloride is much higher than that of sodium metal. State what this information shows about the bonding in these two substances
  3. June 2025, AS Paper 1, Q2(a)(iv) (3 marks): Compare and contrast the electrical conductivity of sodium metal with that of sodium chloride, including how the charge is carried. (3)
  4. June 2024, AS Paper 1, Q7(d) (4 marks): The table shows the electrical conductivity of some pure substances in the solid and liquid states. Electrical conductivity Substance Solid state Liquid state p
  5. June 2024, AS Paper 1, Q8(b)(ii) (4 marks): Data about two silicon compounds are shown. Name of compound Formula Boiling temperature / K silicon(IV) oxide SiO2 2503 silicon tetrachloride SiCl4 331 Explain
  6. June 2023, Paper 1, Q4 (6 marks): The graph shows the melting temperatures of some elements in Period 3. 1800 1600 1400 1200 Melting 1000 temperature 800 / K 600 400 200 0 Na Mg Al Si P Elements
  7. June 2023, AS Paper 1, Q4(a) (2 marks): In order to melt the magnesium, it must be heated strongly. Explain why the structure of magnesium gives it a high melting temperature. (2)
  8. June 2022, Paper 1, Q1(d) (3 marks): The melting temperatures of two elements in Period 3 are given in the table. Element silicon chlorine Melting temperature / K 1683 172 Explain, in terms of the
  9. June 2022, Paper 1, Q4(d)(i) (1 mark): Which of these substances exists at room temperature as a giant lattice of oppositely charged ions? (1) A Substance P B Substance Q C Substance R D Substance S
  10. June 2022, Paper 1, Q4(d)(ii) (1 mark): Which of these substances has a high melting temperature, and conducts electricity when solid and when molten? (1) A Substance P B Substance Q C Substance R D S
  11. June 2022, AS Paper 1, Q6(a) (2 marks): Complete the table. (2) Substance Structure Bonding Melting temperature / K silicon(IV) oxide giant covalent 1883 potassium chloride 1043 iron metallic 1808 iod
  12. June 2022, AS Paper 1, Q6(b) (3 marks): Explain why the melting temperature of silicon(IV) oxide is much higher than that of iodine, even though the bonding in both is covalent. (3)
  13. June 2022, AS Paper 1, Q6(c) (3 marks): Iron and potassium chloride both conduct electricity when molten. However, only iron conducts electricity when solid. Explain these observations. (3)
  14. November 2021, AS Paper 1, Q5(a) (5 marks): Iodine and diamond are crystalline solids at room temperature. Explain why diamond has a much higher melting temperature than iodine. (5)
  15. November 2021, AS Paper 1, Q5(b) (2 marks): Graphite is also a crystalline solid at room temperature. Unlike diamond, graphite conducts electricity. Describe the key feature of the bonding of the carbon a
  16. October 2020, AS Paper 1, Q7(b) (6 marks): The melting temperatures of the Period 2 elements are shown. Symbol of the element Li Be B C(diamond) N O F Ne Melting temperature / K 454 1551 2573 3970 63 55
  17. June 2019, AS Paper 1, Q8(b) (2 marks): Explain why the electrical conductivity of solid potassium bromide is poor but an aqueous solution of potassium bromide is a good electrical conductor. (2)
  18. June 2019, AS Paper 1, Q8(c) (6 marks): Graphene, graphite and diamond are all forms of solid carbon. Explain, in terms of structure and bonding, why graphene and graphite are good electrical conducto
  19. June 2019, AS Paper 1, Q8(d) (2 marks): Deduce two possible reasons why the density of iron (7.86 g cm−3) is much greater than the density of graphite (2.2 to 2.8 g cm−3). (2)
  20. June 2019, AS Paper 1, Q8(e) (2 marks): The compressive strength is a measure of the energy required to break some of the bonds within a substance. Deduce possible reasons why there are two widely dif
  21. June 2017, Paper 1, Q6(a)(ii) (1 mark): State all the conditions under which magnesium bromide conducts electricity. (1)
  22. June 2017, Paper 2, Q2(a) (1 mark): The structural feature that graphene and graphite have in common is that the carbon atoms are arranged in (1) A layers with each atom bonded to four others B he
  23. June 2017, Paper 2, Q2(b) (1 mark): The bond angles within a layer of graphene and a layer of graphite are (1) A 90° and 109.5° B all 109.5° C 109.5° and 120° D all 120°
  24. June 2017, Paper 2, Q2(c) (1 mark): One way in which diamond differs from graphene and graphite is that only diamond has (1) A a high melting temperature B a precise molecular formula C poor elect
  25. June 2016, AS Paper 1, Q8(a) (1 mark): Magnesium oxide has a very high melting temperature. Which of the following is the best description of its structure and bonding? (1) A giant ionic B giant meta
  26. June 2016, AS Paper 1, Q8(c) (4 marks): Element X has the typical appearance of a metal. Predict two other distinct physical properties that element X would exhibit if it is a metal. Explain your choi

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