plumiEduqas A‑Level Chemistry questions by topic
Every question from every Eduqas A-Level Chemistry paper, 2016–2025, part by part. Filter by topic, paper or year, open the mark scheme under any question, and download a set as a PDF.
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Calculations
![June 2025 Component 1, question 1: State the colours observed in flame tests for compounds containing the following ions. [2] Potassium ions ……… …………………………………………….. Lithium ions ……… …………………………………](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-01-qp.webp)
![June 2025 Component 1, question 2: Write the equation for the enthalpy of formation of ethanol. [2] Include state symbols.](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-02-qp.webp)
Q3(a)
The whole paper ↗![June 2025 Component 1, question 3(a): State how catalysts act to increase the rate of a chemical reaction. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-03-a-qp.webp)
Q3(b)
The whole paper ↗![June 2025 Component 1, question 3(b): State what is meant by the term heterogeneous in this context. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-03-b-qp.webp)
Q5(a)
The whole paper ↗![June 2025 Component 1, question 5(a): Write an equation for a reaction that shows that carbon dioxide is an acidic oxide. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-05-a-qp.webp)
Q5(b)
The whole paper ↗![June 2025 Component 1, question 5(b): State what is meant by the term amphoteric. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-05-b-qp.webp)
![June 2025 Component 1, question 6: Use the average bond enthalpies listed to calculate the enthalpy change of the reaction shown. [2] H H C C + 3O2 2CO2 + 2H2O H H Bond C H C C C C O O C O O H Av](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-06-qp.webp)
![June 2025 Component 1, question 7: State what is meant by the term dynamic equilibrium. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-07-qp.webp)
Q8(a)
The whole paper ↗![June 2025 Component 1, question 8(a): Identify the type of particle emitted in this process. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-08-a-qp.webp)
Q8(b)
The whole paper ↗![June 2025 Component 1, question 8(b): State how this particle would be affected by an electric field. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-08-b-qp.webp)
Q9(a)(i)
The whole paper ↗![June 2025 Component 1, question 9(a)(i): Explain how the dark lines form and why they get closer together. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-09-ai-qp.webp)
Q9(a)(ii)
The whole paper ↗
Q9(b)(i)
The whole paper ↗![June 2025 Component 1, question 9(b)(i): Suggest a value for the first ionisation energy of lithium. Give your reasoning. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-09-bi-qp.webp)
Q9(b)(ii)
The whole paper ↗![June 2025 Component 1, question 9(b)(ii): Suggest a value for the first ionisation energy of magnesium. Explain your answer. [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-09-bii-qp.webp)
Q9(c)(i)
The whole paper ↗![June 2025 Component 1, question 9(c)(i): Give the difference between strong and weak acids. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-09-ci-qp.webp)
Q9(c)(ii)
The whole paper ↗
Q9(d)
The whole paper ↗
Q10(a)
The whole paper ↗![June 2025 Component 1, question 10(a): State why these elements are classed as part of the p-block. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-10-a-qp.webp)
Q10(b)(i)
The whole paper ↗![June 2025 Component 1, question 10(b)(i): Identify the most electronegative element in the table. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/a410u10-jun25-10-bi-qp.webp)
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