Two separately-accredited qualifications, one Practical Endorsement — and only one of them has it.
Book a Free ConsultationChecked September 2026. Every qualification code and weighting here was checked directly against Eduqas's own specification PDFs and Ofqual's register. Where a grade-boundary figure rests on third-party aggregation rather than Eduqas's own publication, this page says so.
Eduqas enters A-level Chemistry under a single qualification code, A410QS — not one half of a shared route with Eduqas AS Chemistry, B410QS, as some course-choice pages imply. Eduqas's own reference-codes table lists them as separately numbered qualifications (601/5645/4 and 601/5501/2), and its AS specification states plainly: “Assessments at AS cannot contribute to an A level grade.” This page covers what is specific to the A-level — AO weighting, the Practical Endorsement, component codes, and the WJEC distinction — rather than the five-board comparison on our A-Level Chemistry guide.
Our Eduqas A-level Chemistry tutors work to the qualification a student is actually entered for — the full A410QS A-level or the free-standing B410QS AS — not a generic chemistry syllabus.
Eduqas and WJEC are two brands of the same legal awarding body, WJEC CBAC Ltd, but they are not interchangeable specifications. Eduqas's own A-level Chemistry specification cover page states plainly that the qualification is “not available for candidates in maintained schools and colleges in Wales” — accredited by Ofqual, England's regulator. WJEC's own Chemistry specification for Wales carries the mirror-image statement: “This Welsh Government regulated qualification is not available to centres in England.” Neither is a version of the other for a different market — each is its own accredited qualification, with its own separate entry codes: WJEC's are 1410QS (A level) and 2410QS (AS), against Eduqas's A410QS and B410QS.
Ofqual's own register corroborates the split independently of either specification's own wording. The regulator's entry for Eduqas's A410QS names the awarding organisation as “WJEC-CBAC” and records the qualification number as 601/5645/4; WJEC's own Chemistry specification prints entirely different numbers for the Welsh qualification — GCE A level QN 601/5847/5, GCE AS QN 601/5866/9. A reader in England who lands on a search result for the Welsh specification, or vice versa, is not looking at an alternative route through the same course — they are looking at a different qualification, published by the same company under a different brand name for a different national regulator.
A410QS and B410QS are sometimes described as two routes through one A-level — an AS-then-A2 staging structure, or a foundation/higher-style split. Neither reading survives contact with Eduqas's own documents. A410QS and B410QS are two separately-accredited qualifications, assessed, dated and regulated as such.
Start with the codes themselves. Eduqas's qualification page lists them in a single reference table: “Qual Code A410QS A Level B410QS AS Level QN 601/5645/4 A Level 601/5501/2 AS Level.” The A-level specification itself repeats its own code in its “Making entries” section — “WJEC Eduqas A level Chemistry: A410QS” — and the AS specification does the same for its own code, “WJEC Eduqas AS Chemistry B410QS”. Each document is genuinely silent about the other: the A-level specification contains no reference anywhere to B410QS or 601/5501/2, and the AS specification contains none to A410QS or 601/5645/4.
The AS specification is also explicit about what the separation means for a student's result: “AS qualifications are free-standing and are awarded in their own right. Assessments at AS cannot contribute to an A level grade.” That is a stronger statement than “AS is worth less” — it says an AS grade cannot be combined with further study to produce an A-level grade at all. The two documents differ in scale as well as in wording: the AS specification runs to 34 pages against the A-level's 62, is assessed by two components totalling 160 marks rather than three totalling 300, was first awarded in 2016 (a year before the A-level's 2017), and carries no Practical Endorsement of its own.
Ofqual's register entry for the A level and its separate entry for the AS confirm the split from outside Eduqas's own documents: the A level's assessment methods are recorded as “Practical Demonstration/Assignment, Written Examination” — reflecting the Practical Endorsement — while the AS's are “Written Examination” only. Both show as “Available to learners.” Neither supersedes the other; they are two live, concurrent qualifications, not two stages of one.
Our A-Level Chemistry guide already sets out Eduqas's three components, their durations and their raw-mark totals against the other four boards. What it does not carry — because it is a five-board comparison, not an Eduqas-specific page — is the breakdown by assessment objective. Eduqas's own A-level specification prints it component by component:
| Component | AO1 | AO2 | AO3 |
|---|---|---|---|
| Component 1 | 12% | 18% | 10% |
| Component 2 | 12% | 18% | 10% |
| Component 3 | 6.7% | 6.7% | 6.7% |
| Overall | 30.7% | 42.7% | 26.7% |
Source: Eduqas A-level Chemistry specification, AO weighting table.
AO2 (application of knowledge) is the largest single objective at 42.7% of the whole qualification — heavier than AO1 (knowledge and understanding) at 30.7% and more than half again the weight of AO3 (analysis, interpretation and evaluation) at 26.7%. Components 1 and 2 carry an identical AO split; Component 3, the shortest paper, weights all three objectives equally at 6.7% each.
Our Eduqas A-level Chemistry tutors plan sessions around A410QS's own AO weighting and its Practical Endorsement requirement, not a generic chemistry syllabus.
Our A-Level Chemistry guide answers “which practicals does each board actually require” for AQA, Edexcel and OCR in detail — but says nothing about Eduqas. Eduqas's own requirement is a minimum of 12 practical activities, assessed not by exam but by teachers marking against Common Practical Assessment Criteria (CPAC), reported as a separate Pass or Not Classified result that never enters the A*–E grade. Eduqas's specification states it directly: “A minimum of 12 practical activities to be carried out by each learner… Teachers will assess learners against Common Practical Assessment Criteria (CPAC)… There will be no separate assessment of practical skills for AS qualifications.”
That last sentence is the reason AS Chemistry (B410QS) carries no Practical Endorsement at all, and it is not an oversight: the endorsement is a feature of the two-year A-level qualification specifically, not of Eduqas Chemistry in general. A student who moves from the AS course onto the full A-level therefore starts the Practical Endorsement requirement from nothing — there is no partial credit to carry over from the AS year, because the AS specification never asked for any.
Eduqas's own June 2026 grade-points document sets A410QS's boundaries at A* 222, A 193, B 164, C 135, D 106 and E 78, out of 300 — the same figures already on our A-Level Chemistry guide, independently re-checked against Eduqas's own PDF for this page rather than assumed.
The five-year trend behind that single year is not on the parent page, and it comes with a caveat worth stating plainly. tutor2u's own analysis of the official Eduqas data puts the 2022 A* boundary at 212 of 300 (71% of the maximum) against 2026's 222 (74%) — a rise of three percentage points over four series. Only the 2026 row has been checked against Eduqas's own primary document for this page; the 2022 figure, and the years between, rest on tutor2u's aggregation rather than this session's own verification against each year's Eduqas PDF, and should be read as a third-party figure rather than an Eduqas one.
A past paper or a mark scheme carries a code the qualification-level entry codes do not: A410QS covers the whole A-level, but each individual paper is printed under its own component code. Eduqas's own grade-points document names all three: A410U10 for Component 1 (Physical and Inorganic Chemistry), A410U20 for Component 2 (Organic Chemistry and Analysis), and A410U30 for Component 3 (Chemistry in Practice). The AS qualification's two components carry the equivalent B410U10 and B410U20. A past-paper archive going back to June 2016 for the AS components and June 2017 for the A-level confirms the same six codes are printed on the papers themselves, not just in this one grade-points document.
Eduqas's A-level specification sets two rules for a candidate resitting Chemistry. The first is about the written papers: “Candidates must resit all examination components in the same series” — a student cannot bank Component 1 from one series and sit Components 2 and 3 in a later one. The second is about the Practical Endorsement: “The endorsement grade for NEA may be carried forward for the life of the specification, even if it was awarded by a different awarding body” — so a Pass earned on, say, an AQA or OCR practical endorsement can stand for an Eduqas A-level entry, unless the candidate chooses to resit it.
Both rules were themselves the subject of a specification amendment, per Eduqas's own summary of changes: the “Making entries” section “has been amended to clarify resit rules and carry forward of NEA endorsement grade” in Version 2 of the specification, dated January 2019. The document does not print a more precise date within that version, so this page does not claim one.
Not sure whether your child is entered for the AS or the full A-level? Our Eduqas chemistry tutors confirm it from the code on the past paper, then build sessions around that qualification's own component structure.
We start from the code on the actual past paper — A410QS for the full A-level — rather than assuming a school's board from memory, because the AO weighting, the Practical Endorsement requirement and the component structure are all specific to that code and do not transfer from AQA, Edexcel or OCR. Sessions are built around where Eduqas's own weighting puts the marks: AO2 application questions carry the largest single share of the qualification at 42.7%, so method and application practice gets more time than pure recall drilling. Our specialist tutors also work through the twelve CPAC-assessed practical activities directly, because a Not Classified result is visible on a certificate even though it costs nothing in grade terms. 91% of our students go on to achieve their desired grades. For the five-board comparison, see our A-Level Chemistry guide; for the GCSE stage, see GCSE Chemistry, and for the IB alternative, IB Chemistry.
My son was low in confidence after COVID and the gaps in learning were building up. Using this service helped plug those gaps, rebuild confidence, and improve his ability to learn properly again.
We arranged maths and English tuition ahead of GCSEs and both tutors were brilliant. My daughter's grades improved, and by results day she achieved two grades higher than in her mock exams.
I attended an English bootcamp with Leading Tuition and the experience was excellent. The teacher gave focused attention to the small group while keeping the lessons interactive and engaging.
Primary sources for this page: Eduqas's A-level and AS Chemistry qualification page, the Eduqas A-level Chemistry specification, the Eduqas AS Chemistry specification, the Eduqas GCE A level Chemistry grade points, June 2026, WJEC's GCE Chemistry specification for Wales, Ofqual's find-a-qualification register for A410QS and B410QS, a past-paper archive for the component codes, and tutor2u's Eduqas grade-boundary analysis for the 2022–2026 trend.
No. Eduqas's own qualification page lists them as separately numbered qualifications — A410QS (QN 601/5645/4) for the A level and B410QS (QN 601/5501/2) for the AS — and the AS specification states directly that “AS qualifications are free-standing and are awarded in their own right. Assessments at AS cannot contribute to an A level grade.” They are not two routes through one course; they are two separately-accredited qualifications.
No. Eduqas and WJEC are both published by the same awarding body, WJEC CBAC Ltd, but as separate, non-interchangeable specifications. Eduqas's specification is “not available for candidates in maintained schools and colleges in Wales” and carries the codes A410QS and B410QS; WJEC's Chemistry specification is “not available to centres in England” and carries its own codes, 1410QS and 2410QS, with entirely different qualification numbers.
Components 1 and 2 each carry AO1 12%, AO2 18% and AO3 10% of the whole qualification; Component 3 carries 6.7% on each objective. Overall the qualification is weighted AO1 30.7%, AO2 42.7% and AO3 26.7%, so application of knowledge (AO2) is the single largest share.
No. Eduqas's specification states there is “no separate assessment of practical skills for AS qualifications.” The Practical Endorsement — a minimum of 12 activities assessed against Common Practical Assessment Criteria, reported as Pass or Not Classified — applies only to the full A-level, A410QS.
The three A-level components are A410U10 (Physical and Inorganic Chemistry), A410U20 (Organic Chemistry and Analysis) and A410U30 (Chemistry in Practice); the two AS components are B410U10 and B410U20.
222 marks out of 300, according to Eduqas's own grade-points document. The A boundary was 193, B was 164, C was 135, D was 106 and E was 78.
Yes. Eduqas's specification allows the NEA endorsement grade to be carried forward for the life of the specification “even if it was awarded by a different awarding body” — but candidates must still resit all examination components in the same series if they resit the written papers.
Reviewed September 2026: qualification codes, entry codes, AO weightings and grade boundaries were checked against Eduqas's own A-level and AS Chemistry specifications, Eduqas's qualification page and Ofqual's register. Last updated 9 September 2026.
Whether your child is on the full A-level (A410QS) or the free-standing AS (B410QS), our specialist Eduqas chemistry tutors work to the actual qualification code, not a generic chemistry syllabus. Rated 4.8/5 on Trustpilot from 58 reviews, and 91% of our students go on to achieve their desired grades. For the board comparison across AQA, Edexcel, OCR and Eduqas, see our A-Level Chemistry guide.
Book a Free Consultation