"Describe" questions — WJEC GCSE Chemistry (Wales)
8 questions · chemistry · View as Markdown
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
- Describe what happens when a metal oxide reacts with a dilute acid, and explain why the product formed is called a salt.…
- Crystallisation can be used to obtain a pure salt from a solution. Describe the steps involved in obtaining pure copper …
- Calcium oxide is produced when limestone is heated in a kiln. Describe how calcium oxide can be converted into calcium h…
- A student separates a mixture of liquids using simple distillation. Describe how simple distillation works and explain w…
- A student wants to find out whether a sample of a white solid is a pure substance or a mixture. Describe how the student…
- Describe two limitations of the particle model when used to represent the three states of matter.
- Describe what happens when calcium carbonate reacts with dilute hydrochloric acid. Include the name of the salt produced…
- A student carries out crystallisation to obtain a pure sample of copper sulfate from a solution of copper sulfate. Descr…