A-Level Chemistry Revision: How to Balance Physical, Organic and Inorganic Topics

Avoid spending a full month on only organic chemistry because it feels more visual. A topic rotation keeps quantitative skills fresh while you practise reaction reasoning and trend explanations.

When you see an amount-of-substance question, identify the quantity given, the quantity required, relevant units and any balanced equation. Write the relationship first, substitute values with units, and sense-check the result. A missed unit conversion can lose marks even if your arithmetic is fluent.

Start with functional-group recognition. For each conversion, note the starting group, reagent, conditions, type of reaction and product. Then explain which bond changes and what the curly arrows mean. In electron-pair mechanisms, arrows show the movement of electrons rather than the movement of atoms.

Build a single-page reaction map only after testing recall. Cover the reagents and try to reconstruct a pathway from a starting compound, then reverse the direction and ask what could be made from a target product.

Don't stop at saying a reaction is ‘more reactive’ or an ion is ‘more stable’. Ask what changes across a group or period, what the particle-level explanation is, and which observation or equation supports your answer.

For qualitative chemistry, distinguish observation from inference. A colour change or precipitate is an observation; identifying the ion is a conclusion supported by chemical reasoning. This matters in practical questions as well as theory questions.

Each session can be simple: recall an idea without notes, answer two or three questions that require using it, mark carefully, then redo the weakest answer. Record exact errors such as ‘forgot cm³ to dm³’ or ‘arrow starts at wrong place’ instead of writing only ‘revise chemistry’.