Required Practicals

AQA A-Level Chemistry has 12 required practicals that you must understand in detail. Although you complete these in the laboratory during the course, they are assessed through written questions in the exams — particularly in Paper 3, Section A. You need to know the method, apparatus, variables, safety precautions, expected results, and common sources of error for each one. Examiners frequently ask you to apply your knowledge of these practicals to unfamiliar contexts.

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Required Practical 1: Volumetric Solution and Acid-Base Titration

Aim

Make up a volumetric solution of known concentration and carry out a simple acid-base titration to determine the concentration of an unknown solution.