0654.C11.1.01 — Draw and interpret the displayed formula of a molecule to show all the atoms and all the bonds: past paper questions
Real questions on 0654.c11.1.01 — draw and interpret the displayed formula of a molecule to show all the atoms and all the bonds
The newest 8 of 8 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2026 · Q6a[2]
Draw the displayed formula of a molecule of methane, CH,.
See it on the paper → - 0973/32 · May/June 2025 · Q6a(iii)[2]
Draw the displayed formula of ethanol.
See it on the paper → - 0973/32 · May/June 2025 · Q6b(iii)[2]
Complete the dot-and-cross diagram in Fig. 6.1 to show the arrangement of electrons in a molecule of water. Draw the outer-shell electrons only. H O H
See it on the paper → - 0973/31 · October/November 2023 · Q11a(iii)[2]
The hydrogen made in the reaction exists as molecules of hydrogen, H 2 . Draw a dot-and-cross diagram to show the bonding in a molecule of hydrogen, H 2 .
See it on the paper → - 0973/31 · October/November 2023 · Q11b(i)[1]
State the number of different elements shown in this formula.
See it on the paper → - 0973/31 · October/November 2023 · Q11b(ii)[1]
State the total number of atoms shown in this formula.
See it on the paper → - 0973/32 · May/June 2021 · Q11d[3]
Draw a dot‑and‑cross diagram to show the bonding in molecule E. Only show the outer shell electrons. O H H
See it on the paper → - 0973/41 · October/November 2020 · Q8b[2]
Methanol, CH 3 OH, is a covalent molecule. Draw a dot‑and‑cross diagram to show the bonding in methanol. Show only the outer shell electrons.
See it on the paper →
What examiners said
Those that attempted a displayed formula generally gave a good representation. Common errors included adding a double bond (either between the carbons or between the carbon and oxygen) or adding the O and H the wrong way around. A significant number did not know what was required in a displayed formula and tried to write an equation for a reaction or just repeated the formula given.
— Examiner report, May/June 2025, 0973/32 Q6(a)(iii) (Cambridge)
A good number of candidates were able to draw the electronic structure correctly, with many more able to place two electrons correctly in one of the bonds. The placement of the electrons outside of the bond proved more challenging with many placing one or more around the hydrogen atoms. Some candidates expected the hydrogen atoms to have the same requirement of 8 electrons in the outer shell that...
— Examiner report, May/June 2025, 0973/32 Q6(b)(iii) (Cambridge)
Candidates who drew the correct bonding diagram for methanol had checked that each shell had a share in the maximum number of electrons.
— Examiner report, October/November 2020, 0973/41 Q8(b) (Cambridge)
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