# "Describe" questions — AQA GCSE Chemistry (8462)

> 29 questions · chemistry

## 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

1. [Describe the differences between catalytic cracking and steam cracking.](https://www.gradenine.co.uk/q/describe-the-differences-between-catalytic-cracking-0be28e0b)
2. [A scientist wants to find out whether a sample of water collected from a river is a pure substance or a mixture. Describ…](https://www.gradenine.co.uk/q/a-scientist-wants-to-find-out-27e8cbad)
3. [Iron and calcium are both metals that react with dilute hydrochloric acid. Describe the differences in how iron and calc…](https://www.gradenine.co.uk/q/iron-and-calcium-are-both-metals-33f4bc38)
4. [Describe four ways in which recycling metals reduces the environmental impact of producing metal products.](https://www.gradenine.co.uk/q/describe-four-ways-in-which-recycling-36975f41)
5. [A pharmacist says that a medicine they have made is a formulation. Describe what is meant by a formulation and explain w…](https://www.gradenine.co.uk/q/a-pharmacist-says-that-a-medicine-3be564b6)
6. [A government report states that global climate change is likely to have several serious effects on the planet. Describe …](https://www.gradenine.co.uk/q/a-government-report-states-that-global-467318ee)
7. [Describe how Avogadro's law can be used to compare the volumes of gases produced in different reactions, and explain why…](https://www.gradenine.co.uk/q/describe-how-avogadro-s-law-can-be-584684f6)
8. [Describe four sources of atmospheric pollutants produced by human activities. In your answer, name each pollutant and it…](https://www.gradenine.co.uk/q/describe-four-sources-of-atmospheric-pollutants-62c97902)

## Related

- [AQA GCSE Chemistry (8462) revision notes](https://www.gradenine.co.uk/learn/aqa-gcse-chemistry-8462)
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