"Describe" questions — OCR A-Level Chemistry A (H432)
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
- Propanoic acid is a carboxylic acid used as a food preservative. Describe the key properties of carboxylic acids, includ…
- A student wants to find the empirical formula of a compound containing only carbon and hydrogen. The compound is found t…
- Describe the differences between addition polymerisation and condensation polymerisation, including the types of monomer…
- Methanol, ethanol, propanol and butanol are the first four members of a homologous series of alcohols. Alcohols can be o…
- A student is investigating how the concentration of hydrogen peroxide solution affects the volume of oxygen gas produced…
- A forensic scientist is analysing an unknown organic liquid found at a crime scene. The scientist suspects the liquid is…
- Vinegar contains ethanoic acid, a member of the carboxylic acids homologous series. Describe the key features of carboxy…
- A student is carrying out a practical investigation to determine the effect of stirring on the rate of reaction between …