Extended Response Questions

Extended response questions — typically worth 6 marks — are the most challenging questions on the Edexcel Chemistry papers. They require sustained reasoning, correct scientific terminology, and quality of written communication (QWC).

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How 6-Mark Questions Are Marked

Extended response questions use levels-based marking with three levels:

Level	Marks	Description
3	5–6	Detailed, coherent answer with correct terminology and logical structure
2	3–4	Some relevant points but incomplete or partially disorganised
1	1–2	Basic points with limited detail or significant errors
0	0	No relevant content

To reach Level 3, your answer must:

• Cover the key points in a logical order
• Use correct scientific terminology throughout
• Show a clear line of reasoning from start to finish
• Be relevant to the specific question (not a generic topic dump)

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Planning Your Answer

Spend 2 minutes planning before you start writing. This is not wasted time — it is the most efficient way to organise your thoughts and ensure you cover all the key points.