# "Describe and explain" questions — Edexcel GCSE Chemistry (1CH0)

> 12 questions · chemistry

## How to answer

"describe and explain" questions from Edexcel GCSE Chemistry (1CH0). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.

## Sample questions

1. [Ethanoic acid is a carboxylic acid found in vinegar. Describe what is observed when ethanoic acid is added to sodium car…](https://www.gradenine.co.uk/q/ethanoic-acid-is-a-carboxylic-acid-037240b5)
2. [Alkenes are produced during the cracking of crude oil fractions. Describe the differences between alkanes and alkenes, a…](https://www.gradenine.co.uk/q/alkenes-are-produced-during-the-cracking-1063e136)
3. [The Haber process is a reversible reaction used to produce ammonia. The reaction can reach dynamic equilibrium. Describe…](https://www.gradenine.co.uk/q/the-haber-process-is-a-reversible-13cdd9f8)
4. [Zinc can be extracted from zinc oxide by reduction with carbon. Describe what happens during this process and explain wh…](https://www.gradenine.co.uk/q/zinc-can-be-extracted-from-zinc-1a062f92)
5. [Poly(ethene) is made from ethene by a process called addition polymerisation. Describe what happens to ethene molecules …](https://www.gradenine.co.uk/q/poly-ethene-is-made-from-ethene-by-4066a3bc)
6. [Aqueous copper chloride solution is electrolysed using inert electrodes. Describe and explain what is produced at each e…](https://www.gradenine.co.uk/q/aqueous-copper-chloride-solution-is-electrolysed-407a2e3c)
7. [A student tests two solutions, both with a pH of 3, using universal indicator. One solution contains hydrochloric acid a…](https://www.gradenine.co.uk/q/a-student-tests-two-solutions-both-7ae22cb6)
8. [Describe what is meant by a reversible reaction and explain how a reversible reaction carried out in a closed system eve…](https://www.gradenine.co.uk/q/describe-what-is-meant-by-a-8c056393)

## Related

- [Edexcel GCSE Chemistry (1CH0) revision notes](https://www.gradenine.co.uk/learn/edexcel-gcse-chemistry-1ch0)
- [Edexcel GCSE Chemistry (1CH0) past papers](https://www.gradenine.co.uk/past-papers/edexcel-gcse-chemistry-1ch0)
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