# A sports drinks manufacturer wants to check that every batch of their energy drink contains exactly the right amounts of minerals and colourings. Describe how instrumental analysis could be used to identify and check the purity of the substances present in the drink, and explain the advantages of using instrumental methods rather than traditional chemical tests for this purpose.

> WJEC A-Level Chemistry (Wales) — 2.8 Instrumental analysis · Describe · 5 marks

## Mark scheme (5 marks)

1. Instrumental methods can identify elements or compounds present in a sample
2. Instrumental methods can determine the amount / concentration of a substance present (quantitative analysis)
3. Instrumental methods are faster / more rapid than traditional chemical tests
4. Instrumental methods are more accurate / sensitive than traditional chemical tests
5. Instrumental methods can analyse very small samples

## Key terms

- [instrumental analysis](https://www.gradenine.co.uk/glossary/instrumental-analysis)
- [traditional chemical tests](https://www.gradenine.co.uk/glossary/traditional-chemical-tests)

## Related

- [Revision notes for WJEC A-Level Chemistry (Wales)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/a-sports-drinks-manufacturer-wants-to-b3eec9a5) · Published by Druglandscape Ltd.