"Describe" questions — Cambridge International IGCSE Chemistry (0620)
56 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 how a pure, dry sample of sodium chloride could be prepared by reacting sodium hydroxide solution with dilute h…
- A student investigates the reactivity of four metals: aluminium, iron, platinum, and potassium. Using knowledge of the r…
- Poly(ethene) is made from ethene by a process called addition polymerisation. Describe what happens to ethene molecules …
- Describe how paper chromatography can be used to find out whether a sample of ink contains a mixture of dyes or a single…
- Describe what is observed when dilute hydrochloric acid is added to sodium carbonate, and state two other types of subst…
- Iron rusts when it is exposed to both oxygen and water. Describe what happens to the iron atoms during rusting in terms …
- A student has a mixture of sand and salt dissolved in water. Describe how the student could obtain a pure, dry sample of…
- Copper sulfate is a compound. Describe four ways in which a compound differs from a mixture.