0654.C3.1.04 — Construct word equations to show how reactants form products: past paper questions
Real questions on 0654.c3.1.04 — construct word equations to show how reactants form products
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2023 · Q8b[2]
Complete the word equation for the complete combustion of methane.
See it on the paper → - 0973/31 · May/June 2023 · Q8c(i)[1]
State the name of the pollutant gas produced during the incomplete combustion of methane.
See it on the paper → - 0973/31 · May/June 2021 · Q8c[2]
State the two products made when methane undergoes complete combustion in oxygen.
See it on the paper → - 0973/32 · May/June 2021 · Q2b(i)[1]
Write the word equation for this reaction. + +
See it on the paper → - 0973/32 · May/June 2020 · Q2b(ii)[2]
Complete the word equation for the reaction between calcium carbonate and dilute hydrochloric acid. calcium carbonate + hydrochloric + acid +
See it on the paper → - 0973/31 · May/June 2019 · Q11c(i)[2]
Complete the word equation to show two compounds that react to produce ethanol. + ethanol
See it on the paper →
What examiners said
This equation was not well known. A number of candidates correctly suggested oxygen as the other reactant but few suggested carbon dioxide and water as the products.
— Examiner report, May/June 2023, 0973/31 Q8(b) (Cambridge)
This question proved demanding. Few candidates were able to suggest both carbon dioxide and water.
— Examiner report, May/June 2021, 0973/31 Q8(c) (Cambridge)
Water or steam was well known but ethene was less well recalled. Alcohol, yeast and glucose were all commonly suggested.
— Examiner report, May/June 2019, 0973/31 Q11(c)(i) (Cambridge)
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