One specification, Issue 3 — and the one classification Ofqual's own register makes that Pearson's specification does not.
Book a Free ConsultationPearson Edexcel A-level Chemistry is assessed under a single live specification, 9CH0, now on Issue 3 (February 2024), with three written papers sat in one May/June series and a separately certificated Science Practical Endorsement. Its Ofqual qualification number is 601/5646/6. Unlike several other exam boards, Edexcel runs no second, separately accredited Chemistry route.
That gap goes deeper than assessment alone. Ofqual's register lists this A-level's assessment methods as “Coursework, Written Examination”; the AS qualification's own entry lists “Written Examination” only. Pearson's specification never once uses the word “coursework” for the Practical Endorsement — that classification is the regulator's own bucketing, not the board's language.
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Book a Free Consultation Message us on WhatsAppNo, and this needs stating plainly because it is not true of every board this year. Pearson's current subject page for Chemistry — qualifications.pearson.com/en/qualifications/edexcel-a-levels/chemistry-2015.html — was read directly this session rather than assumed from how other boards run their chemistry offer. It carries exactly one “A level” specification tab, one A-level specification PDF download and one companion AS-level PDF; there is no second, separately accredited “Chemistry A”/“Chemistry B” split of the kind another board runs for the same subject. Every Edexcel A-level Chemistry student, whichever school they attend, sits the same 9CH0 specification.
The specification itself confirms its own edition in the running footer of every content page: “Specification – Issue 3 – February 2024”. The companion AS-level document, 8CH0, was checked independently and its own title page also reads Issue 3, so there is no mismatch between the AS and A-level documents' issue numbers. The qualification is fully linear: “Students must complete all assessment in May/June in any single year”, so all three written papers and the practical evidence behind the Endorsement are finalised in one series, with no modular resit built into the two-year course structure.
Ofqual's register entry for A-level Chemistry, reached this session by requesting qualification number 601/5646/6 directly at find-a-qualification.services.ofqual.gov.uk, states its assessment methods as “Coursework, Written Examination”. It also records 360 guided learning hours, a grading scale of A*/A/B/C/D/E, status “Available to learners” and national availability “England, International” — the register does not name Wales. Regulation of the qualification began on 12 February 2015 and it went operational on 1 September 2015.
The “Coursework” label is the interesting part, because Pearson's own 110-page specification never uses that word anywhere to describe the Science Practical Endorsement. The specification calls it a teacher-assessed component, graded against Common Practical Assessment Criteria, entirely separate from the three externally examined written papers. Ofqual's own bucketing of that teacher-assessed work as “coursework” is the regulator's classification, not Pearson's chosen wording, and neither document states the gap between the two directly.
The companion AS Chemistry entry, qualification number 601/5647/8 and checked at its own register page, lists “Written Examination” only, with 180 guided learning hours — exactly half the A-level's 360. That is the regulator's side independently confirming what Pearson's specification says in its own terms: AS Chemistry carries no Practical Endorsement, so there is nothing for the register to classify as coursework.
Edexcel's specification prints assessment-objective weightings as a share of the whole qualification, paper by paper, rather than as a percentage of each paper's own marks. For A-level Chemistry the published table reads: Paper 1 carries 11–13% AO1, 12–14% AO2 and 5–7% AO3, totalling 30% of the qualification; Paper 2 carries the same spread for another 30%; and Paper 3 carries 8–10% AO1, 16–18% AO2 and 13–15% AO3, totalling 40%.
| Paper | Share of qualification | AO3 of whole qualification | AO3 as a share of THIS paper's own marks |
|---|---|---|---|
| Paper 1: Advanced Inorganic and Physical Chemistry | 30% | 5–7% | 16.7–23.3% |
| Paper 2: Advanced Organic and Physical Chemistry | 30% | 5–7% | 16.7–23.3% |
| Paper 3: General and Practical Principles in Chemistry | 40% | 13–15% | 32.5–37.5% |
Columns 1–3: Pearson Edexcel 9CH0 specification, Issue 3, retrieved 9 September 2026. Column 4 is this page's own derivation, not a figure Edexcel prints.
The right-hand column is not a number Edexcel publishes anywhere — it is worked out by dividing each paper's AO3 share of the whole qualification by that paper's own share of the qualification. For Paper 3: (13 to 15) ÷ 40 = roughly 32.5% to 37.5%. For Papers 1 and 2: (5 to 7) ÷ 30 = roughly 16.7% to 23.3% each. Edexcel prints only the whole-qualification figures in the left three columns; the per-paper share in the fourth column is this page's own calculation, stated as such rather than presented as the board's own published figure. Once normalised this way, Paper 3 carries proportionally far more analysis-and-evaluation weight than Papers 1 or 2 — a genuinely uneven split that a reader would not see from the raw specification table alone.
A tutor who already knows this split can plan revision time around it rather than spreading it evenly. Our Edexcel A-level chemistry tutors weight Paper 3 practice accordingly — book a free consultation to talk through your child's own paper mix.
Edexcel's specification names sixteen numbered core practicals, compiled this session by extracting the full 110-page PDF and locating every “CORE PRACTICAL” heading in order. Practical 13 is split into 13a and 13b, so the sixteen numbers cover sixteen distinct activities:
The Science Practical Endorsement does not require all sixteen. The specification states that “evidence must be provided for the 12 practical techniques listed in Appendix 5c through a minimum of 12 core practical activities” — four more prescribed experiments than the endorsement strictly needs, which gives an Edexcel centre some room to choose which sixteen-minus-four to prioritise if timetabling is tight. Students' work is assessed by teachers using Common Practical Assessment Criteria (CPAC), and “the correct application of CPAC to students' work will be monitored through a system of visits to centres”, coordinated across the exam boards by JCQ. The Endorsement is reported separately from the A*–E grade, as Pass or Not Classified, and contributes no marks to it.
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No. A full-text search of the extracted 110-page specification for the word “option”, run independently this session rather than carried over from any other board, returns zero matches. The contents page shows “Knowledge, skills and understanding” running as a single undivided block, with no elective topics, optional units or alternative papers anywhere in the document. This is the same finding a sibling reached independently for AQA's own A-level Chemistry specification — each checked at its own board's source rather than assumed from the other, and both landing on the same answer: neither board's Chemistry A-level offers any choice of content.
Three absences are worth publishing plainly, because each was searched for and genuinely not found rather than assumed absent. First: the current Issue 3 specification has no “private candidates” section and no “re-sits” or “shelf life” section at all — a full-text search for “private candidate”, “re-sit”, “resit” and “shelf life” across all 110 pages returns zero matches for every term. Where the specification addresses entry, its “Student entry” section reads only: “Details of how to enter students for the examinations for this qualification can be found in our UK Information Manual” — a cross-subject administrative document, not Chemistry-specific guidance, and outside the scope of a specification comparison page.
Second: filtering the qualification's own live news page at its Qualification news category returns only two items, both from 2015 and 2016 and both about the original rollout of the Practical Endorsement. The other 75 items in the full feed, the most recent dated 3 September 2026, are routine monthly “Teaching Science update” bulletins covering training and results-day administration, none naming a specification point or a mark-scheme change. That is a genuine contrast worth stating plainly rather than manufacturing an equivalence that is not there: this specification simply has not had anything comparable to a dated, topic-specific mark-scheme notice in the period searched.
Edexcel's Appendix 3 does not print a DfE discount code at all. It states only: “Discount codes are published by DfE. Please see the GOV.UK website”, deferring entirely to the Department for Education's own published list rather than stating a number in the specification itself — confirmed by a full-text search for “1110” across all 110 pages, which returns zero matches.
The code itself, 1110, was found this session by downloading DfE's own spreadsheet from gov.uk and reading it directly with openpyxl. On the current performance-tables tab, qualification numbers 60156466 (A-level) and 601/5647/8 (AS) both carry discount code 1110 — identical for both qualifications. Reading the source document directly, rather than taking either board's own page on trust, is what confirms it independently.
Details like this — which section the specification omits, not only what it contains — are exactly what a specialist Edexcel chemistry tutor should already know before the first session. If that level of detail matters to you, book a free consultation and we will confirm a tutor who works to 9CH0 specifically.
We start from the specification a student is actually entered for, not a generic chemistry syllabus. For Edexcel 9CH0 that means working to Paper 3's proportionally heavier AO3 loading — roughly a third of that paper's own marks, against under a quarter on Papers 1 and 2 — so revision time is weighted toward analysis and evaluation questions where Edexcel students are tested hardest. It also means rehearsing the sixteen core practicals directly, because Paper 3 draws on indirect practical assessment across those activities, not only the twelve the Science Practical Endorsement strictly requires.
Our specialist chemistry tutors are selected for depth in the subject rather than breadth across the sciences, and sessions concentrate on where marks are actually lost: method marks skipped in multi-step calculations, practical-technique questions answered from memory rather than from having done the experiment, and mark-scheme wording missed under time pressure. Rated 4.8/5 on Trustpilot from 58 reviews, and 91% of our students go on to achieve their desired grades. See our wider GCSE Chemistry support for students still building the foundation, our A-Level Chemistry board comparison for how Edexcel's structure sits against AQA, OCR and Eduqas, and our chemistry tutor page for the wider programme.
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Book a Free Consultation Message us on WhatsAppIf your child is in the first year of this specification rather than the second, our Year 12 Edexcel A-Level Chemistry page covers the AS route and what does and does not carry forward. For A-level tuition beyond chemistry, see our A-Level Tuition hub.
Primary sources for this page: the Pearson Edexcel 9CH0 specification, Issue 3, Pearson's A-level Chemistry qualification page, Ofqual's register entries for A-level Chemistry (601/5646/6) and AS Chemistry (601/5647/8), Edexcel's own qualification news page, and the Department for Education's qualifications discount codes and point scores publication.
No. Pearson's own subject page for A-level Chemistry lists exactly one A-level specification tab and one specification PDF download - there is no separately accredited second route of the kind other boards run for the same subject. Every A-level Chemistry student on Edexcel sits specification 9CH0, currently Issue 3 (February 2024), with the same three written papers and the same Practical Endorsement. The companion AS-level specification, 8CH0, is a separate freestanding qualification and is also on Issue 3.
Ofqual's own register lists A-level Chemistry's assessment methods as 'Coursework, Written Examination'. Pearson's 110-page specification never uses the word 'coursework' anywhere to describe the Practical Endorsement, which it calls a teacher-assessed component graded against Common Practical Assessment Criteria. The AS Chemistry register entry, by contrast, lists 'Written Examination' only, because AS Chemistry carries no Practical Endorsement at all. The 'Coursework' label is the regulator's own classification, not wording Pearson itself uses.
Yes, and the difference is substantial once the figures are worked through. Edexcel's specification states each assessment objective's share of the whole qualification per paper, not per paper directly: Paper 3 carries 13-15% AO3 of the whole qualification against 40% total marks, while Papers 1 and 2 each carry 5-7% AO3 against 30% each. Dividing through, AO3 makes up roughly 32.5-37.5% of Paper 3's own marks against roughly 16.7-23.3% on each of the other two papers - a calculation Edexcel does not publish directly but that follows from its own table.
Edexcel's specification names 16 core practicals, numbered 1 to 16 with practical 13 split into 13a and 13b. The Science Practical Endorsement itself requires evidence from a minimum of 12 of these activities, covering the 12 practical techniques listed in the specification's Appendix 5c. Work is assessed by teachers against Common Practical Assessment Criteria, with the correct application monitored through JCQ-coordinated visits to centres. The Endorsement is reported separately on the certificate as Pass or Not Classified and does not affect the overall A-level grade.
No. A full-text search of the current 110-page Issue 3 specification for the word 'option' returns zero matches. The specification's 'Knowledge, skills and understanding' section runs as one undivided block of compulsory content, with no elective topics or optional papers of any kind. This matches what has been independently confirmed for AQA's own A-level Chemistry specification, checked separately at each board's own source rather than assumed from the other.
Not in any dedicated section. The current Issue 3 specification has no 'private candidates' heading and no 're-sits' or 'shelf life' heading at all - a full-text search for those terms returns zero matches. Where the specification addresses entry, its 'Student entry' section simply directs centres to Pearson's general UK Information Manual, a cross-subject administrative document rather than Chemistry-specific guidance. This is a genuine absence in Edexcel's own document, not an oversight in this research.
Filtering the qualification's own news page to its 'Qualification news' category returns only two items, both from 2015 and 2016 and both about the original launch of the Practical Endorsement. The remaining items in the feed, the most recent dated 3 September 2026, are routine monthly 'Teaching Science update' bulletins covering training and administration rather than specification-specific guidance. On this evidence, Edexcel has not issued anything comparable to a dated mark-scheme update for a specific topic.
1110, shared identically by AS Chemistry (601/5647/8) and A-level Chemistry (601/5646/6), according to the Department for Education's own published discount-code spreadsheet. Pearson's own specification does not print this code: its Appendix 3 states only that discount codes are published by DfE and directs readers to GOV.UK, unlike AQA's equivalent appendix, which prints its own code directly. Both figures were confirmed this session from DfE's own spreadsheet rather than taken from either board's page.
Reviewed September 2026: specification edition, paper structure, assessment-objective weightings, core practicals and Ofqual register data were checked against Pearson Edexcel's own specification and Ofqual's register. Published 9 September 2026.
Our specialist tutors work to Edexcel's own 9CH0 paper structure, AO weighting and core practicals.
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