"Explain" questions — OCR A-Level Chemistry A (H432)
67 questions · chemistry · View as Markdown
How to answer
WHAT + WHY. Every point paired with a because. Structure: X happens because Y. This causes Z because … Assessment Objective: AO2. Every "explain" answer on this spec is marked against exactly this pattern.
Sample questions
- Ethanol can be oxidised to form a carboxylic acid. Explain what is meant by the term carboxylic acid, name the carboxyli…
- Methanol, ethanol and propanol are all members of the alcohol homologous series. A chemist is investigating the combusti…
- Hand warmers are single-use packets used by hikers in cold weather. When a hand warmer is activated, a chemical reaction…
- Propan-1-ol can be converted into 1-chloropropane, a haloalkane, in a substitution reaction. Explain how the functional …
- Buckminsterfullerene (C₆₀) is a fullerene used in medical drug delivery systems. Explain why C₆₀ has a low melting point…
- A student is making bread at home. Yeast is added to the dough mixture to help it rise. The student notices that the dou…
- A sports clothing company is developing a new fabric using condensation polymerisation. The polymer chain contains amide…
- Iron is an element. Steel is an alloy made mostly from iron, with small amounts of carbon and other metals added. Explai…