MARK SCHEME
OCR A Level Chemistry A
H432/02 · Synthesis and analytical techniques
June 2026
What this document contains
· Full mark scheme (39 pages)
· A Level Chemistry A
· H432/02: Synthesis and analytical techniques
· June 2026
· Exam-style marking guidance for revision
,GCE
Chemistry A
H432/02: Synthesis and analytical techniques
A Level
Mark Scheme for June 2026
,Cambridge OCR is a leading UK awarding body, providing a wide range of qualifications to
meet the needs of candidates of all ages and abilities. Cambridge OCR qualifications include
AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills,
Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT,
business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
needs of students and teachers. Cambridge OCR is a not-for-profit organisation; any surplus
made is invested back into the establishment to help towards the development of qualifications
and support, which keep pace with the changing needs of today’s society.
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
on the examination.
© Cambridge OCR 2026
, H432/02 Mark Scheme June 2026
MARKING INSTRUCTIONS
PREPARATION FOR MARKING
RM ASSESSOR
1. Make sure that you have accessed and completed the relevant training packages for on-screen marking: RM Assessor Assessor Online Training;
OCR Essential Guide to Marking.
2. Make sure that you have read and understood the mark scheme and the question paper for this unit. These are posted on the RM Cambridge
Assessment Support Portal http://www.rm.com/support/ca
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the number of required standardisation responses.
MARKING
1. Mark strictly to the mark scheme.
2. Marks awarded must relate directly to the marking criteria.
3. The schedule of dates is very important. It is essential that you meet the RM Assessor 50% and 100% (traditional 40% Batch 1 and 100% Batch 2)
deadlines. If you experience problems, you must contact your Team Leader (Supervisor) without delay.
4. If you are in any doubt about applying the mark scheme, consult your Team Leader by telephone or the RM Assessor messaging system, or by email.
5. Crossed Out Responses
Where a candidate has crossed out a response and provided a clear alternative then the crossed out response is not marked. Where no alternative
response has been provided, examiners may give candidates the benefit of the doubt and mark the crossed out response where legible.
Rubric Error Responses – Optional Questions
Where candidates have a choice of question across a whole paper or a whole section and have provided more answers than required, then all responses
are marked and the highest mark allowable within the rubric is given. Enter a mark for each question answered into RM assessor, which will select the
OCR A Level Chemistry A
H432/02 · Synthesis and analytical techniques
June 2026
What this document contains
· Full mark scheme (39 pages)
· A Level Chemistry A
· H432/02: Synthesis and analytical techniques
· June 2026
· Exam-style marking guidance for revision
,GCE
Chemistry A
H432/02: Synthesis and analytical techniques
A Level
Mark Scheme for June 2026
,Cambridge OCR is a leading UK awarding body, providing a wide range of qualifications to
meet the needs of candidates of all ages and abilities. Cambridge OCR qualifications include
AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills,
Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT,
business, languages, teaching/training, administration and secretarial skills.
It is also responsible for developing new specifications to meet national requirements and the
needs of students and teachers. Cambridge OCR is a not-for-profit organisation; any surplus
made is invested back into the establishment to help towards the development of qualifications
and support, which keep pace with the changing needs of today’s society.
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination. It shows the basis on which marks were awarded by examiners. It does not
indicate the details of the discussions which took place at an examiners’ meeting before marking
commenced.
All examiners are instructed that alternative correct answers and unexpected approaches in
candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills
demonstrated.
Mark schemes should be read in conjunction with the published question papers and the report
on the examination.
© Cambridge OCR 2026
, H432/02 Mark Scheme June 2026
MARKING INSTRUCTIONS
PREPARATION FOR MARKING
RM ASSESSOR
1. Make sure that you have accessed and completed the relevant training packages for on-screen marking: RM Assessor Assessor Online Training;
OCR Essential Guide to Marking.
2. Make sure that you have read and understood the mark scheme and the question paper for this unit. These are posted on the RM Cambridge
Assessment Support Portal http://www.rm.com/support/ca
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the number of required standardisation responses.
MARKING
1. Mark strictly to the mark scheme.
2. Marks awarded must relate directly to the marking criteria.
3. The schedule of dates is very important. It is essential that you meet the RM Assessor 50% and 100% (traditional 40% Batch 1 and 100% Batch 2)
deadlines. If you experience problems, you must contact your Team Leader (Supervisor) without delay.
4. If you are in any doubt about applying the mark scheme, consult your Team Leader by telephone or the RM Assessor messaging system, or by email.
5. Crossed Out Responses
Where a candidate has crossed out a response and provided a clear alternative then the crossed out response is not marked. Where no alternative
response has been provided, examiners may give candidates the benefit of the doubt and mark the crossed out response where legible.
Rubric Error Responses – Optional Questions
Where candidates have a choice of question across a whole paper or a whole section and have provided more answers than required, then all responses
are marked and the highest mark allowable within the rubric is given. Enter a mark for each question answered into RM assessor, which will select the
