FREE GUIDE
Dropping marks in Chemistry — even when they understand it?
This is the most common pattern in A-Level Chemistry. Students who genuinely understand the content still lose marks — because of something specific that has nothing to do with knowledge.
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Marks Guide
Why A-Level Chemistry students lose marks on questions they know the answer to
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The pattern nobody talks about in A-Level Chemistry
Problem 1: The mark scheme language gap
Chemistry examiners mark against a very specific mark scheme. A student can have the right idea, the right chemistry, and the right answer — and still receive zero marks because the phrasing doesn't match what the mark scheme requires. This is not taught. Most students don't know it's happening until they see their marked paper.
Problem 2: Organic chemistry mechanism errors
Organic chemistry is where most Chemistry students lose the most marks. Curly arrows in the wrong position. Lone pairs missed. Mechanisms that are almost right but score zero because one step is incorrect. These are trainable errors — but they require someone to identify exactly which step is going wrong.
Problem 3: The 6-mark question structure problem
Extended answer questions require a specific depth and sequence of argument. Students who know the chemistry often write too much content in the wrong order. The structure of a high-scoring 6-mark answer is a learnable skill — it is not a measure of how much chemistry the student knows.
What you'll find in the Chemistry Marks Guide
- Why Chemistry students lose marks even when they understand the content
- How the mark scheme language gap works — and how to close it
- The most common organic chemistry mechanism errors and how to fix them
- How to structure a 6-mark extended answer to match examiner expectations
- What "exam technique" actually means in Chemistry — and how it is taught
Real Results from Real Students
These aren’t lucky outcomes.
They’re the natural result of a system that works.
Who wrote this free guide
Graeme Matthews has a PhD in Chemistry and has taught A-Level Chemistry for 27 years. The patterns in this guide are drawn from marking hundreds of student papers and identifying exactly where marks are lost.
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Get the free Chemistry Marks Guide
Why A-Level Chemistry students lose marks on questions they know the answer to
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Legal Disclaimer
We don’t guarantee results. Success depends on your effort, commitment, and circumstances. While we share proven strategies to support your progress, any results shown are examples, not promises of future outcomes. Questions? Email: [email protected]