The jump is real — but it's specific

Every September I watch the same thing happen. Students who got 7s, 8s and 9s at GCSE sit down in their first A-Level Chemistry lessons and, within three weeks, sort themselves into two groups: the ones keeping up comfortably, and the ones already treading water. The difference is almost never intelligence, and it's rarely effort. It's whether a handful of specific GCSE skills are automatic.

A-Level Chemistry is not “harder everything”. It's faster — a topic your GCSE course spent three weeks on gets three lessons. It assumes calculation fluency: moles, concentrations and unit conversions are the working language of the course, not a topic within it. It expects you to write chemical formulae from memory, quickly, without being asked. And it comes with an unwritten contract of around five hours of independent study a week, starting immediately.

Having marked for AQA and OCR and taught sixth-form classes, I can name the failure points precisely, because they're the same every year: dividing the wrong way round in n = m ÷ M, forgetting the ÷1000 in concentration calculations, formula-writing that needs a full minute per formula instead of five seconds, and calculator habits that quietly compute the wrong thing. None of these is hard to fix in August. All of them are painful to fix in October, when the course has moved on without you.

What your school expects

Most sixth forms send out a bridging booklet over the summer — and most test it, formally or informally, in the first two or three weeks of term. The contents barely vary between schools, because the gap barely varies: maths skills (standard form, significant figures, rearranging), moles and the mole equation, formula writing and balancing, concentration, percentage yield and error, and practical vocabulary.

Take the booklet seriously, but understand what it's for. Nobody is impressed by a completed booklet; teachers set it so your first test doesn't have to be a rescue operation. That's why I built Bridge the Gap — a free, interactive version of the same material. It covers the same skills as the booklet, but it marks itself, explains every wrong answer the way an examiner would, and works on your phone. Use it to make the booklet faster and to check your answers make sense.

The seven skills

1 · The maths toolkit. Standard form, significant figures, unit prefixes, rearranging equations without formula triangles, and calculator order of operations. None of it is hard; all of it has to be automatic. Module 1 drills exactly this.

2 · Writing formulae. At GCSE you were usually given formulae; from September you're expected to produce them. Knowing the common ions and the crossover method turns a minute of head-scratching into five seconds of routine. Module 2 builds the fluency, from simple ionic to balancing and ionic equations.

3 · Moles. The currency of the entire course. If n = m ÷ M isn't second nature, every topic that follows wobbles. Module 3 takes you from Mr warm-ups to particle conversions — and then asks you to escape the Mole Maze.

4 · Concentration. Titrations arrive within weeks of starting Year 12, and every titration calculation stands on c = n ÷ V with the volume in dm3. Module 4 makes the conversion part of the habit.

5 · Yield, error and uncertainty. Real chemistry never gives you 100%, and A-Level expects you to say how far off you were and why — including the detail that two readings double the uncertainty. Module 5 covers the two percentages.

6 · Practical language. Accurate, precise, repeatable, reproducible, random and systematic error — A-Level practical work is assessed on vocabulary as much as technique. This joins the course as Module 6 in September.

7 · A taste of what's new. The first genuinely new content of Year 12 — shells splitting into sub-shells, electron configurations, ionisation energy — rewards a preview. Module 7 lands in September too.

A realistic 4-week plan

Little and often beats heroic sessions — ten minutes a day does more than two hours once. Here's a plan that leaves your summer intact:

  • Week 1: Take the 10-minute diagnostic to find your actual gaps, then work the Maths Toolkit.
  • Week 2: Formula drills, little and often — ten minutes a day. The drills shuffle every run, so repeat visits stay useful.
  • Week 3: Moles and concentration — the two modules that decide how the first term feels.
  • Week 4 (last week of the holidays): Yield and error, then retake the diagnostic and watch the bars move. Fluent by lesson one.

What to buy (and what not to)

Less than you think. Get the standard textbook for your exam board — your school will name it — and, if retrieval-practice books suit you, one of those. That's it. You don't need a subscription, a second textbook, or anything laminated. Free notes exist: my complete GCSE notes are already live for looking things up, and the bridging course above costs nothing and never will.

If you want a head start with support

Some students want more than a summer course — a term of one-to-one work that turns “coping” into “comfortably ahead”. I keep my A-Level student numbers deliberately small so I can teach properly, and September places go first, usually before results day. If the calculation modules felt harder than they should, that's the signal worth acting on. Get in touch for a free, no-obligation chat to see if we're a good fit.

Bridging FAQs

Do I need to do my school's bridging work as well? Yes — schools often test it in September. This course covers the same skills interactively, so use it to make the booklet faster and to check your answers make sense.

Is A-Level Chemistry hard? It's a step up in pace and depth, but the students who struggle are almost always missing specific GCSE skills — calculation fluency above all. Fix those before September and the first term is very manageable.

I did Combined Science — am I behind? No, but you met moles more briefly than Triple students. Modules 1–4 cover the gap; give them extra time.

How long does this take? The diagnostic takes 10 minutes; each module 15–25. Little and often beats one long session — 20 minutes a day for a fortnight is plenty.

Is it really free? Yes — no sign-up, nothing stored beyond your own browser. I make my living from one-to-one tuition; these resources are how students find out whether my teaching suits them.