0654.C7.2.01 — Classify oxides as either acidic, including SO2 and CO2, or basic, including CuO and CaO, related to metallic and non-metallic character: past paper questions
Real questions on 0654.c7.2.01 — classify oxides as either acidic, including so2 and co2, or basic, including cuo and cao, related to metallic and non-metallic character
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2026 · Q5c[1]
Carbon dioxide gas is an acidic oxide. Explain why carbon dioxide is an acidic oxide and not a basic oxide.
See it on the paper → - 0973/41 · May/June 2025 · Q6d[1]
State the type of oxide formed when carbon, a non-metal, reacts with oxygen to produce carbon dioxide, CO 2 .
See it on the paper → - 0973/32 · May/June 2023 · Q2a(iii)[1]
is an acidic oxide.
See it on the paper → - 0973/31 · May/June 2020 · Q2d(i)[1]
Predict whether nitrogen dioxide is acidic or basic. Explain your answer. nitrogen dioxide is explanation
See it on the paper → - 0973/41 · October/November 2019 · Q5d[3]
An alkali is a base dissolved in water. A student investigates the reactions of four oxides with acids and alkalis. Table 5.1 shows his results. Table 5.1 oxide reactions aluminium oxide reacts with both acids and alkalis copper oxide reacts with acids nitrous oxide no reaction with either acids or alkalis sulfur dioxi...
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What examiners said
Most candidates did not identify that an acidic oxide would be formed. There was a wide variety of incorrect answers given. This concept was not well understood.
— Examiner report, May/June 2025, 0973/41 Q6(d) (Cambridge)
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