0654.C2.2.01 — Describe the structure of the atom as a central nucleus containing neutrons and protons, surrounded by electrons in shells: past paper questions
Real questions on 0654.c2.2.01 — describe the structure of the atom as a central nucleus containing neutrons and protons, surrounded by electrons in shells
The newest 20 of 29 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2025 · Q5a(i)[1]
is an atom of hydrogen
See it on the paper → - 0973/31 · May/June 2025 · Q5a(ii)[1]
is in Group VII of the Periodic Table
See it on the paper → - 0973/31 · May/June 2025 · Q5a(iii)[1]
is a noble gas
See it on the paper → - 0973/31 · May/June 2025 · Q5a(iv)[1]
is an ion
See it on the paper → - 0973/31 · May/June 2025 · Q5a(v)[1]
are isotopes of the same element and .
See it on the paper → - 0973/41 · May/June 2025 · Q6a[2]
A sodium atom is represented with numbers next to its chemical symbol, as shown in Fig. 6.1. 23 11 Na Fig. 6.1 Complete Table 6.1 to show the structure of a sodium atom. Table 6.1 atomic number mass number number of protons neutrons electrons
See it on the paper → - 0973/42 · May/June 2025 · Q5a[1]
The element carbon has a proton (atomic) number of 6. Complete Fig. 5.1 to show the electronic configuration of a carbon atom. C
See it on the paper → - 0973/41 · October/November 2024 · Q5a[2]
Complete the sentences about the structure of an atom. An atom has a central nucleus containing and and a series of of electrons surrounding the nucleus.
See it on the paper → - 0973/31 · May/June 2024 · Q11a[3]
A calcium atom has a proton number of 20 and a nucleon number of 40. Deduce the number of protons, neutrons and electrons in this atom of calcium. number of protons number of neutrons number of electrons
See it on the paper → - 0973/31 · May/June 2024 · Q11c(i)[1]
State the chemical name for lime.
See it on the paper → - 0973/31 · May/June 2024 · Q11c(ii)[1]
State the name of the gas formed in this thermal decomposition reaction.
See it on the paper → - 0973/31 · May/June 2024 · Q11d(i)[1]
State the number of different elements in calcium carbonate.
See it on the paper → - 0973/31 · May/June 2024 · Q11d(ii)[1]
State the total number of atoms shown in the formula CaCO 3 .
See it on the paper → - 0973/32 · May/June 2024 · Q2a(ii)[1]
is in diamond.
See it on the paper → - 0973/32 · May/June 2024 · Q2a(vi)[1]
is used in the manufacture of sulfuric acid.
See it on the paper → - 0973/41 · May/June 2024 · Q5c(ii)[2]
Mercury has a proton number (atomic number) of 80 and a nucleon number (mass number) of 201. Complete Table 5.2 for an atom of mercury. Table 5.2 protons 80 neutrons electrons
See it on the paper → - 0973/31 · October/November 2023 · Q2c(i)[1]
On Fig. 2.2, complete the electronic structure for this atom of sulfur. S Fig. 2.2
See it on the paper → - 0973/32 · May/June 2023 · Q11a(i)[1]
An atom of calcium has 20 protons and 20 neutrons. State the number of electrons in this calcium atom.
See it on the paper → - 0973/32 · May/June 2023 · Q11a(ii)[1]
State the number of electrons in one calcium ion, Ca 2+ .
See it on the paper → - 0973/41 · May/June 2023 · Q5a(i)[3]
Complete the labels on Fig. 5.1.
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What examiners said
Most candidates identified E, with a range of incorrect answers.
— Examiner report, May/June 2025, 0973/31 Q5(a)(ii) (Cambridge)
Candidates struggled to identify D with a lot giving F but other answers were also seen.
— Examiner report, May/June 2025, 0973/31 Q5(a)(iii) (Cambridge)
Again, candidates found this difficult, identifying D or E as the ion.
— Examiner report, May/June 2025, 0973/31 Q5(a)(iv) (Cambridge)
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