Paper 1 is the inorganic chemistry plus most of physical chemistry. Paper 2 is the organic chemistry plus the physical topics that underpin it. Paper 3 can take anything.

The physical topics appear on both, which is why they are grouped that way here. The full breakdown is here.

Any content from the specification, plus practical techniques and data analysis, plus a section of multiple choice. It is 30 per cent and it is the paper where gaps anywhere in the course show up.

The practical endorsement is marked by your teacher and reported separately. The techniques are examined on all three written papers, and that content is in the guide: titration, purification and recrystallisation, reflux and distillation, chromatography, rate measurement, and testing for ions and functional groups.

Yes, with their own subtopics. Amount of substance and titrations, percentage yield and atom economy, enthalpy and Hess cycles, bond enthalpies, Kc and Kp, Kw and pH, buffer calculations, Born-Haber cycles, entropy and free energy, rate equations, half-lives and the Arrhenius equation, and electrode potentials.

Yes. Organic Synthesis, NMR and Chromatography is 138 questions: proton and carbon-13 spectra, chemical shift, splitting patterns, integration, TMS, deuterated solvents, and the chromatography that goes with it.

About twenty minutes for one subtopic, all three steps. Transition Metals is 324 questions, so work by subtopic.

Write. A mark scheme wants a specific reagent and a specific condition rather than the gist, and step 2 is where that gets fixed. The method page sets out the evidence.

7405 is linear, so all three papers are sat at the end of Year 13. Physical chemistry is taught first and is examined on all three papers, which makes it the sensible first pass.

Yes. Past papers train the multi-step calculation under time, the unfamiliar context and the multiple choice section. AQA publishes them free.

A PDF of 2,442 exam-style questions covering the whole of AQA A-Level Chemistry, with the answers printed after each topic.

The specification code is on the exam timetable. AQA A-Level Chemistry is 7405.

There should be handwritten answers on paper and three passes over the same questions, and two scores per session to compare.

Rereading and highlighting were both rated low utility by Dunlosky and colleagues in 2013. Chemistry punishes it harder than most subjects, because a half-remembered reagent scores nothing.

The method page sets out the alternative.

£7.00 for the whole specification. An endorsed AQA A-Level Chemistry textbook is usually £30 to £40.

168 subtopics at roughly twenty minutes each is about 56 hours for a full first pass, spread across two years.

Past papers, free from AQA, a calculator, and their own notes for anything not yet taught.