"Describe" questions — Pearson Edexcel International GCSE Chemistry (4CH1)
28 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
- Magnesium has atomic number 12. An atom of magnesium has two electrons in its outermost shell. Describe the arrangement …
- Methanol and butanol are both members of the alcohols homologous series. Describe TWO chemical properties that methanol …
- Ethanol can be oxidised to ethanoic acid. Describe TWO different methods by which this oxidation can be carried out, and…
- Chlorine has two stable isotopes: chlorine-35 and chlorine-37. Describe what is meant by the term isotope and state how …
- Propyl methanoate is an ester used as a flavouring in some sweets and fruit drinks. Describe how propyl methanoate could…
- Butanoic acid is a carboxylic acid. A student adds an excess of sodium carbonate powder to a sample of butanoic acid sol…
- Tungsten is a metal used to make the filaments of incandescent light bulbs because it has a very high melting point and …
- A student has four separate solutions, each containing one of the following ions: Fe²⁺, Fe³⁺, Cu²⁺, or Zn²⁺. The student…