The 5 Most Examined A-Level Chemistry Topics
(And How to Answer Exam Questions Like An A* Student)
15+ years tutoring experience | Exam technique specialist | 1st Class Bsc (Hons) Chemistry with Biochemistry | MSc Green Chemistry
Why Hard Work Doesn't Always Mean Better Grades
Many A-Level Chemistry students spend hours revising, but still find their grades stuck below where they need to be.
As a parent, that can be incredibly frustrating to watch.
Your child may understand the content, complete past papers and work hard throughout the year, yet still lose marks because they don't fully understand how OCR examiners award them.
In Chemistry, small mistakes can have a surprisingly large impact on grades.
A missed step in a calculation.
A curly arrow drawn incorrectly.
An incorrectly described reaction observation.
An answer that is “in the right ball park”, but not the exact wording the examiner is looking for. (Yes, this matters!)
These small errors can quickly add up across a paper and make the difference between a B and an A, or an A and an A*.
If your child is aiming for a competitive university course such as Medicine, Dentistry, Veterinary Science, Pharmacy or Chemical Engineering, those marks matter.
This guide was created to help students master identified topics most commonly examined across the major exam boards in England, and understand exactly how high-scoring students approach them.
Chemistry Isn't Just About Knowing The Content
Many students understand the theory but still lose out on marks because they:
❌ Miss key steps in multi-step calculations
❌ Forget what examiners are actually looking for
❌ Make avoidable errors in mechanisms
❌ Know the topic but don't know how to structure their answer
❌ Lose method marks even when their final answer is close
By developing exam technique on high-frequency exam topics, students can maximise their marks and improve their exam performance.
Study Smarter With Examiner-Focused Revision
This guide doesn't just tell you which topics appear regularly. It shows:
✓ Why students lose marks
✓ What examiners expect
✓ The exact methods and phrasing that earn marks
✓ Typical A/A* responses
✓ Repeatable approaches you can use in future exams
Each topic includes worked examples and exam-focused commentary designed to help students convert knowledge into marks.
Why These 5 Topics Matter
These 5 topics alone made up nearly 50% of the marks across the OCR June 2024 Exam Series
Your child still needs to revise the full specification.
But understanding how to answer questions from these high-frequency topics can make a significant difference to their final grade.
OVERVIEW
What's Inside the Guide?
Amount of Substance
Master tricky moles and titration questions
Enthalpy Changes & Hess's Law
Avoid common mistakes that affect enthalpy calculation marks
Organic Mechanisms
Understand how curly arrows work and never miss another mechanism mark
Acids, Bases & Buffers
Handle one of the most calculation-heavy A-Level topics
Transition Metals
structure transition metal reaction and observation answers in a way examiners expect
This guide is for your child if:
✓ Your child is working hard but their grades aren't improving
✓ They keep making avoidable mistakes in exams
✓ They're aiming for an A or A* in Chemistry
✓ They need top grades for a competitive university course
✓ They understand the content but struggle to convert it into marks
This guide is NOT right for your child if:
✗ They're looking for a shortcut to exam success
✗ They're not studying A-Level Chemistry
✗ Content knowledge is the main issue right now
✗ They're unwilling to review and improve exam technique
✗ They're already predicted and working at an A/A* grade
A MESSAGE FROM THE AUTHOR
Hi, I'm Ope
I'm the A-Level Chemistry Exam technique specialist with over 15 years of tutoring experience behind "5 Most Examined A-Level Chemistry Topics". I also hold a First Class degree in Chemistry and a scholarship-winning MSc in Green Chemistry from two leading Russell Group Universities.
Over the years I've worked with hundreds of Chemistry students and I've noticed something important:
Many students don't lose marks because they don't know Chemistry.
They lose marks because they don't understand how to structure their answers in a way that is aligned to the exam board's expectations.
That's why I created this guide - to help give students a clearer understanding of where marks are gained or lost, and how they can approach some of the most frequently examined A-Level topics with greater confidence.
TESTIMONIALS
What Others Had To Say
Chloe B.
I can definitely see improvements in how I answer exam questions… helped improve my exam technique.
Lukasz Sztygiel
Ope is an incredible chemistry tutor! She broke down difficult topics in a way that made my son feel capable and supported. Thanks to her guidance, he walked into his exams feeling confident and well-prepared. We highly recommend her!
Savannah W.
Ope’s been very helpful and so far has helped me get from a low C to a comfortable B in only a couple months.
Kay Oyedele
My son has found the lessons very helpful and his confidence has grown tremendously.
Julie Z.
Results day went better than I could have imagined as I achieved 3 As
Jacque E.
I would highly recommend Ope! We found Ope for my son's chemistry tuition and he got an A* (we were working towards an A after he got a C initially)! I want to thank you for all your help
FAQ
Your questions answered
This guide is designed specifically for A-Level Chemistry students, particularly those who understand the content, but struggle with exam technique. It is also aimed at those working towards A and A* grades.
This guide is intended to be exam-board agnostic, so you are advised to cross-check content against your exam board’s specification.
Yes. Simply enter your email address and you'll receive immediate access.
No resource can guarantee a particular grade. However, the guide is designed to help students understand common examiner expectations, avoid frequent mistakes and develop stronger exam technique. When used efficiently, this guide will help to improve exam technique on these common exam questions.
The guide is based on historical exam trends and should be used alongside revision of the full A-Level Chemistry specification of your child's specific exam board. I make no guarantees about future predictions on exam questions.
I support A-Level Chemistry students through my exam prep Chemistry programme. My approach focuses on helping students understand the content properly, apply it to exam questions, and develop the precision needed for higher marks.
You can learn more or register your interest here.
Download the 5 Most Examined Topics Guide
If your child is aiming for top grades in A-Level Chemistry and wants to avoid losing marks unnecessarily, this guide is an excellent place to start.
Download your free copy today.