# "Describe" questions — Pearson Edexcel International GCSE Chemistry (4CH1)

> 28 questions · chemistry

## How to answer

Say WHAT happens, in order. No reasoning. Structure: 1. First X. 2. Then Y. 3. Then Z. Assessment Objective: AO1. Every "describe" answer on this spec is marked against exactly this pattern.

## Sample questions

1. [Magnesium has atomic number 12. An atom of magnesium has two electrons in its outermost shell. Describe the arrangement …](https://www.gradenine.co.uk/q/magnesium-has-atomic-number-12-an-072c9f3f)
2. [Methanol and butanol are both members of the alcohols homologous series. Describe TWO chemical properties that methanol …](https://www.gradenine.co.uk/q/methanol-and-butanol-are-both-members-0a32506c)
3. [Ethanol can be oxidised to ethanoic acid. Describe TWO different methods by which this oxidation can be carried out, and…](https://www.gradenine.co.uk/q/ethanol-can-be-oxidised-to-ethanoic-1355cfef)
4. [Chlorine has two stable isotopes: chlorine-35 and chlorine-37. Describe what is meant by the term isotope and state how …](https://www.gradenine.co.uk/q/chlorine-has-two-stable-isotopes-chlorine-35-1ad6cf97)
5. [Propyl methanoate is an ester used as a flavouring in some sweets and fruit drinks. Describe how propyl methanoate could…](https://www.gradenine.co.uk/q/propyl-methanoate-is-an-ester-used-267be84a)
6. [Butanoic acid is a carboxylic acid. A student adds an excess of sodium carbonate powder to a sample of butanoic acid sol…](https://www.gradenine.co.uk/q/butanoic-acid-is-a-carboxylic-acid-3df1565f)
7. [Tungsten is a metal used to make the filaments of incandescent light bulbs because it has a very high melting point and …](https://www.gradenine.co.uk/q/tungsten-is-a-metal-used-to-3f7f6aac)
8. [A student has four separate solutions, each containing one of the following ions: Fe²⁺, Fe³⁺, Cu²⁺, or Zn²⁺. The student…](https://www.gradenine.co.uk/q/a-student-has-four-separate-solutions-4896f85b)

## Related

- [Pearson Edexcel International GCSE Chemistry (4CH1) revision notes](https://www.gradenine.co.uk/learn/pearson-edexcel-international-gcse-chemistry-4ch1)
- [Pearson Edexcel International GCSE Chemistry (4CH1) past papers](https://www.gradenine.co.uk/past-papers/pearson-edexcel-international-gcse-chemistry-4ch1)
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