# "Explain and describe" questions — WJEC A-Level Chemistry (Wales)

> 6 questions · chemistry

## How to answer

"explain and describe" questions from WJEC A-Level Chemistry (Wales). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.

## Sample questions

1. [A pharmaceutical company makes two products: pure aspirin tablets and a cold-relief formulation. Explain why only the pu…](https://www.gradenine.co.uk/q/a-pharmaceutical-company-makes-two-products-14f01c45)
2. [Methanol and ethanol are both alcohols. Explain why both of these substances are classified as alcohols and describe two…](https://www.gradenine.co.uk/q/methanol-and-ethanol-are-both-alcohols-18010d7a)
3. [A farmer buys a liquid weedkiller product from a garden centre. The label states that it contains several different acti…](https://www.gradenine.co.uk/q/a-farmer-buys-a-liquid-weedkiller-8bb908cc)
4. [Ethanol (C₂H₅OH) is an organic compound found in alcoholic drinks and is also used as a fuel. Explain why ethanol is cla…](https://www.gradenine.co.uk/q/ethanol-c-h-oh-is-an-organic-compound-e079e504)
5. [Propanol (C₃H₇OH) is an alcohol used as a solvent and in hand sanitisers. Explain why propanol is classified as an organ…](https://www.gradenine.co.uk/q/propanol-c-h-oh-is-an-alcohol-used-ed6899e9)
6. [A student wants to separate a mixture of two liquids, ethanol and water, to obtain a sample of pure ethanol. Explain why…](https://www.gradenine.co.uk/q/a-student-wants-to-separate-a-eda7c991)

## Related

- [WJEC A-Level Chemistry (Wales) revision notes](https://www.gradenine.co.uk/learn/wjec-a-level-chemistry-wales)
- [WJEC A-Level Chemistry (Wales) past papers](https://www.gradenine.co.uk/past-papers/wjec-a-level-chemistry-wales)
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