# "Describe" questions — WJEC GCSE Chemistry (Wales)

> 8 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. [Describe what happens when a metal oxide reacts with a dilute acid, and explain why the product formed is called a salt.…](https://www.gradenine.co.uk/q/describe-what-happens-when-a-metal-06fe3779)
2. [Crystallisation can be used to obtain a pure salt from a solution. Describe the steps involved in obtaining pure copper …](https://www.gradenine.co.uk/q/crystallisation-can-be-used-to-obtain-18e1258c)
3. [Calcium oxide is produced when limestone is heated in a kiln. Describe how calcium oxide can be converted into calcium h…](https://www.gradenine.co.uk/q/calcium-oxide-is-produced-when-limestone-42250de2)
4. [A student separates a mixture of liquids using simple distillation. Describe how simple distillation works and explain w…](https://www.gradenine.co.uk/q/a-student-separates-a-mixture-of-446bdf9a)
5. [A student wants to find out whether a sample of a white solid is a pure substance or a mixture. Describe how the student…](https://www.gradenine.co.uk/q/a-student-wants-to-find-out-5a738c3d)
6. [Describe two limitations of the particle model when used to represent the three states of matter.](https://www.gradenine.co.uk/q/describe-two-limitations-of-the-particle-8d2ac093)
7. [Describe what happens when calcium carbonate reacts with dilute hydrochloric acid. Include the name of the salt produced…](https://www.gradenine.co.uk/q/describe-what-happens-when-calcium-carbonate-a2efe00f)
8. [A student carries out crystallisation to obtain a pure sample of copper sulfate from a solution of copper sulfate. Descr…](https://www.gradenine.co.uk/q/a-student-carries-out-crystallisation-to-c00aa10e)

## Related

- [WJEC GCSE Chemistry (Wales) revision notes](https://www.gradenine.co.uk/learn/wjec-gcse-chemistry-wales)
- [WJEC GCSE Chemistry (Wales) past papers](https://www.gradenine.co.uk/past-papers/wjec-gcse-chemistry-wales)
- [Practise with AI marking (free)](https://www.gradenine.co.uk/start)