0654.C2.3.01 — Define isotopes as different atoms of the 3 State that isotopes of the same element same element that have the same number of have the same : past paper questions
Real questions on 0654.c2.3.01 — define isotopes as different atoms of the 3 state that isotopes of the same element same element that have the same number of have the same
The newest 20 of 27 written questions. Open one to see it on the real paper.
- 0973/32 · May/June 2025 · Q5b(i)[2]
State what is meant by the term isotope.
See it on the paper → - 0973/32 · May/June 2025 · Q5b(ii)[1]
State why the relative atomic mass, A r , of chlorine is 35.5. (ii)
See it on the paper → - 0973/32 · May/June 2025 · Q5b(iv)[2]
Sodium chloride is also made by reacting an acid with an alkali. State the acid and the alkali that is used. acid
See it on the paper → - 0973/32 · May/June 2025 · Q5b(v)[1]
Chlorine is a halogen. The halogens are found in Group VII of the Periodic Table and have similar chemical properties. Explain why the halogens have similar chemical properties.
See it on the paper → - 0973/32 · May/June 2025 · Q6a(i)[1]
Explain why ethanol is not a hydrocarbon. (i)
See it on the paper → - 0973/41 · May/June 2025 · Q6c[1]
Carbon-12 and carbon-13 are two isotopes of the element carbon. These isotopes of carbon have the same chemical properties. Explain why.
See it on the paper → - 0973/31 · October/November 2024 · Q3d(i)[1]
Complete the sentence to define the term isotope. Isotopes are atoms of the same element which have the same number but a different number.
See it on the paper → - 0973/31 · October/November 2024 · Q3d(ii)[1]
State the number of neutrons in an atom of isotope A and in an atom of isotope B. isotope A
See it on the paper → - 0973/41 · October/November 2024 · Q5b[3]
The element oxygen exists as isotopes. State what is meant by isotopes.
See it on the paper → - 0973/41 · May/June 2024 · Q6b(i)[2]
Describe one similarity and one difference in the composition of a nucleus of chlorine‑35 and a nucleus of chlorine‑37. similarity difference
See it on the paper → - 0973/31 · October/November 2023 · Q3c(i)[1]
State what is meant by the term isotope.
See it on the paper → - 0973/32 · May/June 2023 · Q3d(i)[1]
State the meaning of the term isotope.
See it on the paper → - 0973/41 · May/June 2023 · Q5c(i)[2]
Carbon has three naturally occurring isotopes: carbon‑12, carbon‑13 and carbon‑14. Complete Table 5.1 to show the numbers of protons, neutrons and electrons in an atom of each isotope. Table 5.1 isotope protons neutrons electrons carbon‑12 6 6 carbon‑13 6
See it on the paper → - 0973/41 · May/June 2023 · Q5c(ii)[1]
Explain, in terms of particles, why these isotopes have the same chemical properties.
See it on the paper → - 0973/42 · May/June 2023 · Q8a[3]
Copper has two isotopes, copper‑63 and copper‑65. Table 8.1 shows information about copper‑63 and copper‑65. Complete Table 8.1. Table 8.1 isotope proton (atomic) number nucleon (mass) number protons neutrons copper‑63 29 63 29 34 electrons
See it on the paper → - 0973/42 · May/June 2023 · Q8b[3]
Complete the sentence to describe what is meant by isotopes. Choose words from the list. compound electron element group nucleon nucleus proton Isotopes are atoms of the same which have the same number but a different number.
See it on the paper → - 0973/31 · May/June 2022 · Q6c(i)[1]
State the meaning of the term isotope.
See it on the paper → - 0973/41 · May/June 2022 · Q8b(i)[2]
Explain what is meant by the word isotope.
See it on the paper → - 0973/41 · May/June 2022 · Q8b(ii)[1]
The two isotopes of chlorine have the same chemical properties. Explain why.
See it on the paper → - 0973/31 · October/November 2021 · Q6b(i)[3]
State the meaning of the terms: radioactive decay isotopes
See it on the paper →
What examiners said
Another definition that proved demanding for candidates. Some were confused in their use of terms and those who attempted the definition often confused protons and neutrons.
— Examiner report, May/June 2025, 0973/32 Q5(b)(i) (Cambridge)
Candidates did not understand that relative atomic mass is the average mass of all the atoms of an element. Many incorrectly thought it contained half a proton or neutron, or that the 0.5 was due to the mass of electrons. This showed a number of misconceptions about the mass of the different sub-atomic particles and how they contribute to the mass of an atom.
— Examiner report, May/June 2025, 0973/32 Q5(b)(ii) (Cambridge)
The majority of candidates incorrectly wrote two of sodium, chloride and hydrogen. Some were able to identify hydrochloric acid but it was very rare to see sodium hydroxide as the alkali.
— Examiner report, May/June 2025, 0973/32 Q5(b)(iv) (Cambridge)
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