Required Practical: Water Purification

This lesson covers the AQA GCSE Chemistry Required Practical on water purification. You need to know how to carry out an analysis of water samples and produce a sample of pure water by distillation. Understanding the apparatus, method, expected results and sources of error is essential for the exam, as questions on required practicals appear frequently.

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Aim of the Practical

The aim of this required practical is to:

1. Analyse a sample of water to determine what it contains
2. Purify a sample of water using distillation to produce a sample that is close to chemically pure

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Apparatus and Materials

You need to know the apparatus used in this practical: