Answering Core Practical Exam Questions

Knowing the core practicals is only half the challenge. The other half is knowing how to answer exam questions about them. Examiners do not simply ask you to recite a method — they ask you to apply your practical knowledge, evaluate methods, identify errors, and suggest improvements.

This lesson teaches you the specific techniques for each type of practical question, with model answers showing exactly what the examiner is looking for.

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Type 1: "Describe the Method"

These questions ask you to write out the procedure for a core practical. They are typically worth 4–6 marks.

What the Examiner Wants

• A step-by-step method in a logical order
• Specific details (volumes, concentrations, measurements)
• Key scientific reasons for steps (e.g., "add excess to ensure all acid reacts")
• Correct equipment named

Model Answer: Describe How to Investigate the Effect of Concentration on Rate of Reaction