"Describe" questions — OCR A-Level Chemistry B: Salters (H433)
13 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
- A teacher asks students to compare the most abundant elements found in the human body with those found in the universe a…
- A company extracts iodine from seaweed on an industrial scale. After harvesting the seaweed, it is burned to produce ash…
- Ethanol can be oxidised to form a carboxylic acid. Describe the properties of carboxylic acids, including their function…
- A student is investigating how the volume of gas produced changes over time when zinc granules react with dilute sulfuri…
- A forensic scientist is analysing an unknown organic liquid recovered from a crime scene. The liquid is suspected to be …
- Ethanol is an alcohol used in alcoholic drinks and as a fuel. When ethanol burns completely in oxygen, it produces carbo…
- Ethanoic acid is a carboxylic acid used in vinegar. A student adds a small piece of calcium carbonate to a sample of eth…
- A pharmaceutical company is developing a new painkiller from a plant extract. Before the medicine can be sold to the pub…