Why GCSE chemistry sits where it does
Chemistry is the abstract one. Biology has organs you can point at. Physics has motion you can feel. Chemistry has electrons jumping shells, ions floating in solution, equilibria shifting on paper — and most 14-year-olds need the mental model built before they can do the calculations. Schools cover the content but rarely have time to build the model. That’s the gap a tutor fills.
The AQA Trilogy specification has 10 chemistry topics, two papers, 16.7% of the GCSE total per paper. Required practicals (rates of reaction, chromatography, electrolysis, neutralisation, salt preparation, titration, water purification) appear in both papers and account for about 15% of marks. The exam-board pattern is consistent — moles, organic chemistry and electrolysis are the three topics that separate the 6s from the 8s and 9s.
Edexcel’s structure is similar but the questions read differently. OCR Gateway places more weight on practical skills questions. WJEC GCSE Chemistry (used in Wales) follows its own structure with combined and separate science variants. A tutor who teaches your child’s exact board this term will know which topics the examiner has hit hard for the last three papers — that’s the practical edge over a tutor who “knows GCSE chemistry”.
What the strong tutor does in 8 sessions
Eight sessions, one a week, builds a reliable grade jump. Roughly:
- Sessions 1–2: moles. Mass to moles, moles to mass, balanced equations. Until the student can solve a 4-mark moles question without a hint.
- Sessions 3–4: bonding and structure, plus ionic equations. The conceptual foundation for half the spec. Including state symbols.
- Session 5: required practicals. All 8 (combined) or all 12 (separate), method and exam-question style.
- Session 6: electrolysis and energy changes. Two topics where AQA loves to ask 6-markers.
- Session 7: organic chemistry. Alkanes, alkenes, alcohols, carboxylic acids. Naming, reactions, displayed formulae.
- Session 8: full past paper. Timed, marked, walkthrough of every lost mark.
That’s the plan. It moves a grade 5 to a 7 reliably if the student does the homework. Without the homework — usually two past-paper questions a week — it moves it half a grade.
Where students lose easy marks
Six-mark questions are the bleed point. Markschemes for AQA’s 6-markers reward a student who covers all listed points and uses keywords. Students write three paragraphs of vague chemistry and miss the four specific terms the markscheme wants. The fix is mechanical: read the question, identify the topic, write a checklist of keywords before writing the answer, then build the paragraph around the checklist. It feels robotic; it works.
Practical calculations are the second bleed. Titration calculations, percentage yield, atom economy — all standard, all worth 2–4 marks each. Students arrive in Year 11 thinking they “don’t need” the maths because chemistry is “the science one”. The maths is 20% of the paper.
A student we worked with at a Bromley state school last year was sitting at a grade 5 in February. We drilled moles for three weeks, then required practicals, then 6-mark questions. She came out with a 7. Not magic — just spending the tutoring hours where the marks actually live, not on whatever the tutor felt like teaching that week.
Pricing and getting started
GCSE chemistry tutors on TheTutorLink mostly charge £25–£45 an hour. Filter by board (AQA, Edexcel, OCR Gateway, OCR 21st Century, WJEC), by tier (foundation or higher), and by online/in-person. Read profiles for board specificity — a tutor who lists “all GCSE science” is a generalist; a tutor who specifies “AQA Trilogy higher tier, currently teaching Year 11” is what you want. Book a free first session, bring a recent class test or mock paper, and ask the tutor to mark it on the call. The platform fee is 5%, taken from the tutor’s side — the price on the profile is the price you pay. No subscription. Pay session by session, stop when the grade lands.