plumiReactions of the elements, oxides and hydroxides: Edexcel International A Level Chemistry questions
Edexcel International A Level Chemistry past-paper questions on 8.B.2 Reactions of the elements, oxides and hydroxides, 2019–2025, with mark schemes and examiner’s reports where available.
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Q20(a)(i)
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Open the full PDFYour answerQ21(a)(i)
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All 12 questions on Reactions of the elements, oxides and hydroxides, as a list
- October 2024, AS Unit 2, Q20(a)(i) (2 marks): Write an equation for the reaction that occurs. Include state symbols in your answer. (2)
- October 2024, AS Unit 2, Q20(a)(ii) (2 marks): Give two observations you would make during this reaction. (2)
- October 2024, AS Unit 2, Q20(b) (2 marks): Lithium metal is stored under oil. When a piece of lithium metal is removed from the oil, the surface quickly tarnishes. One compound formed is lithium nitride.
- June 2024, AS Unit 2, Q5 (1 mark): Steam is passed over heated magnesium. Which reaction occurs most readily? A Mg + H2O → MgO + H2 B Mg + 2H2O → Mg(OH)2 + H2 C 2Mg + H2O → Mg2O + H2 D 2Mg + 2H2O
- June 2024 (R), AS Unit 3, Q2(a)(i) (3 marks): Describe the differences you would see when this experiment is carried out with the three metals. (3)
- January 2024, AS Unit 2, Q21(d) (6 marks): Samples of calcium and magnesium are added to separate test tubes of cold water containing a few drops of universal indicator. State and explain the differences
- June 2023, AS Unit 2, Q10 (1 mark): When lithium reacts with excess oxygen, only lithium oxide is formed. When sodium reacts with excess oxygen, sodium oxide and sodium peroxide are both formed. W
- June 2023, AS Unit 3, Q4(a)(i) (2 marks): State two observations when this reaction takes place. (2)
- January 2023, AS Unit 2, Q10 (1 mark): Which reaction produces more than one product? A Mg + O2 → B Ca + Cl2 → C Sr + H2O → D BaO + H2O →
- June 2022, AS Unit 2, Q5(a) (1 mark): Which is the equation for this reaction? (1) A Ca + H2O → CaO + H2 B Ca + 2H2O → CaO2 + 2H2 C Ca + H2O → CaOH + ½H2 D Ca + 2H2O → Ca(OH)2 + H2
- October 2021, AS Unit 2, Q21(a)(i) (2 marks): Write the equation for this reaction. Include state symbols. (2)
- October 2021, AS Unit 3, Q1(d)(iv) (2 marks): The solid residue from the decomposition was added to distilled water. Give one observation for the reaction that takes place, identifying the product of the re
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