5-mark practice questions — AQA A-Level Chemistry (7405)
169 questions · chemistry · View as Markdown
How to answer
5-mark questions typically award marks for structured argument: two ideas + linked because + specific example + conclusion.
Sample questions
- Explain why cracking is an important industrial process. In your answer, refer to both the feedstock used and the produc…
- Explain how increasing the concentration of sodium thiosulfate solution increases the rate of its reaction with hydrochl…
- Explain why ammonia solution is classified as a weak base and describe how this affects the pH of a 0.1 mol/dm³ ammonia …
- A student dissolves ammonium nitrate in water. The temperature of the solution decreases. Explain why the temperature de…
- Describe how a student could use the relative formula mass of a substance and a known number of moles to calculate the m…
- Bromine water decolourises when it reacts with propene. A student investigates how the initial concentration of bromine …
- Crude oil is described as a finite resource. Explain what is meant by the term 'finite resource' and describe the origin…
- Explain why increasing the concentration of hydrochloric acid increases the rate of reaction between hydrochloric acid a…