Exam Prep
How to Prepare for A-Level Chemistry
By Dr Ayesha Khan · · 4 min read
Quick answer
A-Level chemistry splits into physical, inorganic and organic, each needing a different approach. Physical is calculation-heavy, organic rewards understanding mechanisms and patterns, inorganic rewards trends and recall. Secure the maths early, learn mechanisms rather than memorising reactions, and use past papers throughout.
Three strands, three approaches
A-Level chemistry divides into physical, inorganic and organic chemistry, and they are almost different subjects. Physical is mathematical, organic is about patterns and mechanisms, inorganic is about trends and properties.
Recognising that each strand rewards a different kind of study stops you applying one method everywhere. Tailor your revision to the strand.
Secure the maths early
Physical chemistry is calculation-heavy — moles, energetics, rates, equilibria — and students weak on the maths struggle throughout. Getting the mathematical skills solid early pays off across the whole course.
Much of the maths builds on the mole concept, so if that is shaky, fixing it is the highest-value thing you can do.
Organic: learn mechanisms, not lists
Organic chemistry looks like an endless list of reactions to memorise, but it is really a smaller set of mechanisms and patterns that recur. Understanding why reactions happen lets you predict them.
Learning the mechanism types — and how functional groups behave — turns a memorisation nightmare into a system you can reason with.
Inorganic: trends and recall
Inorganic chemistry rewards knowing periodic trends and the properties of specific groups and elements. Here recall matters more, so organised notes and active testing are the tools.
Look for the patterns — trends down a group, across a period — rather than treating every element separately, which reduces what you have to remember.
Practical and analytical skills
Required practicals and analytical techniques generate predictable questions. Know the methods and the reasoning, and practise the data-analysis and error questions that accompany them.
These are dependable marks, and the associated maths — uncertainties, significant figures — rewards specific practice.
Past papers reveal the style
A-Level chemistry questions have a distinctive style, especially the multi-step calculations and the extended-response questions. Past papers, marked against the scheme, teach that style directly.
Log the reason for every lost mark. The pattern is usually a short, fixable list — a recurring maths slip, a mechanism half-learned, a trend forgotten.
Frequently asked questions
What are the three parts of A-Level chemistry?+
Physical (calculation-heavy — moles, energetics, rates, equilibria), organic (mechanisms and patterns), and inorganic (periodic trends and properties). Each rewards a different study approach.
Why do I struggle with physical chemistry?+
Usually the maths. Physical chemistry is calculation-heavy and much of it builds on the mole concept, so if that is shaky, securing it is the highest-value thing you can do.
How do I cope with all the organic reactions?+
Learn the mechanisms and patterns rather than memorising reactions as a list. Organic chemistry is a smaller set of recurring mechanisms, and understanding them lets you predict reactions.
How should I revise inorganic chemistry?+
Focus on periodic trends and the properties of groups, looking for patterns down groups and across periods rather than treating every element separately. Active testing suits its recall-heavy nature.
How do past papers help in chemistry?+
They teach the distinctive style of the multi-step calculations and extended-response questions. Marking against the scheme and logging every lost mark reveals a short, fixable list of weaknesses.
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