Papers and timings at a glance
| Board | Papers | Marks | Time |
|---|---|---|---|
| AQA 8462 | Paper 1 (topics 1-5) and Paper 2 (topics 6-10), each 50% | 100 each, 200 total | 1 hour 45 minutes each |
| Pearson Edexcel 1CH0 | Paper 1 and Paper 2, each 50% | 100 each | 1 hour 45 minutes each |
| OCR Gateway J248 | 2 papers per tier (Foundation papers 1 and 2, Higher papers 3 and 4), each 50% | 90 each | 1 hour 45 minutes each |
What's on each AQA paper
- Paper 1: atomic structure and the periodic table; bonding, structure and the properties of matter; quantitative chemistry; chemical changes; energy changes.
- Paper 2: the rate and extent of chemical change; organic chemistry; chemical analysis; chemistry of the atmosphere; using resources. Paper 2 can also test the fundamentals from topics 1 to 3.
- Both papers use multiple choice, structured, closed short answer and open response questions, including 6-mark extended answers.
- The 8 required practicals (such as making a salt, electrolysis, temperature changes, rates, chromatography, identifying ions and water purification) are assessed in the written papers.
- Revise topic by topic with our GCSE Chemistry practice questions.
Foundation or Higher tier?
Both papers must be taken at the same tier. Foundation tier gives grades 1 to 5 and Higher tier gives grades 4 to 9. On Higher there is an allowed grade 3 for students who just miss grade 4, but below that the result is U, so your teacher will usually enter you for Higher only if you are reliably working at grade 4 or above.
Some content is Higher tier only, including moles and the Avogadro constant, half equations in electrolysis, bond energy calculations, Le Chatelier's principle in detail and titration calculations.
See where you stand in 10 minutes
Take the free GCSE Chemistry practice test. 15 questions, every answer explained.
How grades and grade boundaries work
Your raw marks from both papers are added to give a total out of 200 (AQA), and grade boundaries are set on that total after every exam series. They change each year depending on how hard the papers were, so there is no fixed mark for a grade 4 or a grade 7. Past boundaries are published on each board's website and are useful only as a rough guide.
Grade 4 is a standard pass and grade 5 a strong pass. Results for summer 2027 are released on Thursday 19 August 2027.
2027 exam dates
The summer 2027 GCSE series runs through May and June, and the JCQ common timetable ends on 18 June 2027. AQA has published these dates for GCSE Chemistry 8462 (both tiers, morning sessions): Paper 1 on Monday 17 May 2027 and Paper 2 on Tuesday 15 June 2027. Edexcel and OCR set their own dates; check your board's final timetable and your school's exam calendar.
There is no November resit series for GCSE Chemistry. If you need to retake it, you sit both papers again in a later summer series.
An 8-week revision plan
- Week 1: atomic structure, the periodic table, and bonding. Make flashcards for definitions and trends.
- Week 2: quantitative chemistry. Do 20 minutes of mole, concentration and percentage yield calculations every day from now on.
- Week 3: chemical changes and energy changes, including electrolysis products and bond energy calculations.
- Week 4: a full timed Paper 1. Mark it with the mark scheme and log every lost mark in a mistakes list.
- Week 5: rates and equilibrium, then organic chemistry.
- Week 6: chemical analysis (tests and Rf), atmosphere and using resources. Revise all 8 required practicals.
- Week 7: a full timed Paper 2, then re-learn the weak areas from both mistakes lists.
- Week 8: mixed questions and short timed sections. Before each paper, review your flashcards rather than learning anything new.
Frequently asked questions
How many papers are there in GCSE Chemistry?
With AQA and Edexcel there are two papers of 1 hour 45 minutes, each worth 50%. OCR Gateway also has two papers per tier, each 1 hour 45 minutes and 90 marks.
Is there coursework in GCSE Chemistry?
No. Students carry out required (AQA) or core (Edexcel) practicals in class, and questions about them appear in the written exams.
What is the difference between GCSE Chemistry and Combined Science?
GCSE Chemistry is a separate GCSE with more content and longer papers. Combined Science covers biology, chemistry and physics in one double award worth two GCSEs.
Can I use a calculator in GCSE Chemistry?
Yes, a calculator is allowed in both papers, and a periodic table is provided.
What mark do I need for a grade 4 or grade 7?
It changes every year. Boundaries are set after the papers are marked, so aim to score around 70% in timed practice and check past boundaries only as a rough guide.
Can I take GCSE Chemistry as a private candidate?
Yes, if you can find an exam centre that accepts private candidates. Because practicals are assessed in the written papers, you should still learn the required practical methods thoroughly. Fees are set by the centre.
Official sources
- AQA GCSE Chemistry 8462: specification at a glance
- AQA GCSE Chemistry 8462: key dates
- OCR GCSE Gateway Science Chemistry A (J248) specification
- JCQ key dates for the June 2027 series
Practice tests for these exams
This guide is general information, checked November 2026, not official exam board guidance. Specifications and dates can change; confirm the details with your school or exam board.
