plumiExothermic and endothermic reactions: CAIE IGCSE Chemistry questions
Every CAIE IGCSE Chemistry exam question on 5.1 Exothermic and endothermic reactions, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Calculations
Q2(a)
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Q2(b)(i)
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Q2(b)(ii)
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Q2(c)
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Q2(d)
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Q2(e)
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Q2(f)(i)
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Q2(g)
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Q8(a)(iii)
The whole paper ↗![Specimen Paper 3, question 8(a)(iii): Thermal energy is released to the surroundings when hydrogen is burnt. State the name of the type of reaction which transfers heat to the surroundings. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-08-aiii-qp.webp)
Q5(c)(i)
The whole paper ↗![Specimen Paper 4, question 5(c)(i): Define the term activation energy. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062004-spec-05-ci-qp.webp)
All 16 questions on Exothermic and endothermic reactions, as a list
- June 2024, Paper 1, Q12 (1 mark): Which row describes what happens during an endothermic reaction? thermal energy is change in temperature of transferred the reaction mixture A from the surround
- June 2024, Paper 1, Q16 (1 mark): Water is added to anhydrous copper(II) sulfate. Which row describes the direction of energy change and the colour change of the mixture during the reaction? dir
- June 2024, Paper 2, Q15 (1 mark): The reaction between hydrogen and oxygen releases 486kJ/mol of energy. 2H2(g) + O2(g) → 2H2O(g) The bond energy of H–H is 436kJ/mol and that of H–O is 464kJ/mol
- June 2024, Paper 2, Q16 (1 mark): Which reaction pathway diagram shows the reaction that will give out the most energy? The scale on the y-axis is the same in each diagram. A B reactants product
- June 2024, Paper 6, Q2(a) (5 marks): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(b)(i) (1 mark): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(b)(ii) (1 mark): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(c) (4 marks): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(d) (2 marks): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(e) (2 marks): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(f)(i) (2 marks): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- June 2024, Paper 6, Q2(g) (1 mark): A student investigates the temperature change when magnesium reacts with dilute sulfuric acid. The student does five experiments. Experiment 1 ● Use a 25 cm3
- Specimen, Paper 1, Q11 (1 mark): A reaction pathway diagram is shown. products energy reactants progress of reaction Which statement about the reaction is correct? A Heat is released. B It is a
- Specimen, Paper 2, Q12 (1 mark): Which diagram is a correctly labelled reaction pathway diagram for an endothermic reaction? A B products products overall activation energy overall energy energ
- Specimen, Paper 3, Q8(a)(iii) (1 mark): Thermal energy is released to the surroundings when hydrogen is burnt. State the name of the type of reaction which transfers heat to the surroundings. [1]
- Specimen, Paper 4, Q5(c)(i) (2 marks): Define the term activation energy. [2]
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