12/07/2026
It isn't always a lack of knowledge that costs students marks.
After years of teaching and examining Cambridge A-Level Chemistry, I have noticed the same pattern again and again.
Many students understand the science. They can explain the concepts confidently in class and solve problems during revision. Yet when the examination results are released, they are disappointed by marks that do not reflect what they know.
Why?
Because examinations do not reward everything a student knows. They reward what a student communicates.
A common misconception is that writing more demonstrates greater understanding. In reality, examiners are not looking for the longest answer. They are looking for the right answer.
Every mark is linked to a specific point in the mark scheme. Every keyword serves a purpose. Every sentence should move the candidate closer to the next available mark.
That is the difference between knowing Chemistry and knowing how to answer Chemistry.
The most successful students are not necessarily those who study the longest. They are the ones who understand how examiners think, recognise what each question is truly assessing, and communicate their knowledge with precision.
When students begin to approach every question from the examiner's perspective, their answers become clearer, their confidence grows, and the marks follow naturally.
After all, examinations are not simply a test of knowledge.
They are a test of how effectively that knowledge is communicated.
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