# "Describe" questions — Edexcel A-Level Chemistry (9CH0)

> 11 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. [A geologist discovers a mineral sample and suspects it contains iron(III) ions, calcium ions and sulfate ions. Describe …](https://www.gradenine.co.uk/q/a-geologist-discovers-a-mineral-sample-228b3331)
2. [Iron and copper are both transition metals. Describe three properties that iron and copper share which are typical of tr…](https://www.gradenine.co.uk/q/iron-and-copper-are-both-transition-2e18a428)
3. [Crude oil is a mixture of hydrocarbons, including alkanes. Describe the structure and bonding of alkanes, and explain wh…](https://www.gradenine.co.uk/q/crude-oil-is-a-mixture-of-4b0826be)
4. [Alkenes are unsaturated hydrocarbons that contain a carbon-to-carbon double bond. Describe what is meant by the terms 'u…](https://www.gradenine.co.uk/q/alkenes-are-unsaturated-hydrocarbons-that-contain-69a849f2)
5. [Describe the trends in melting point and reactivity as you go down Group 0 (the noble gases) and Group 1 (the alkali met…](https://www.gradenine.co.uk/q/describe-the-trends-in-melting-point-7f62c780)
6. [Chlorine, bromine and iodine are halogens in Group 7. A student investigates the physical properties and bonding of thes…](https://www.gradenine.co.uk/q/chlorine-bromine-and-iodine-are-halogens-8bcc0439)
7. [Ethanol can be oxidised to form ethanoic acid. Describe what happens during the oxidation of ethanol, name the type of p…](https://www.gradenine.co.uk/q/ethanol-can-be-oxidised-to-form-99501334)
8. [Pentan-1-ol (C₅H₁₁OH) is an alcohol. Describe how pentan-1-ol can be oxidised in the laboratory, name the organic produc…](https://www.gradenine.co.uk/q/pentan-1-ol-c-h-oh-is-an-alcohol-describe-b550f9e8)

## Related

- [Edexcel A-Level Chemistry (9CH0) revision notes](https://www.gradenine.co.uk/learn/edexcel-a-level-chemistry-9ch0)
- [Edexcel A-Level Chemistry (9CH0) past papers](https://www.gradenine.co.uk/past-papers/edexcel-a-level-chemistry-9ch0)
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