A level 3
OCR
Oxford Cambridge and RSA
GCE
Chemistry A
H432/03: Unified chemistry
A Level
Mark Scheme for June 2023
,A level 3
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide
range of qualifications to meet the needs of candidates of all ages and abilities. 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. 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.
© OCR 2023
, 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 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.
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the required number of
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 50%
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, email or via the RM
Assessor messaging system.
, 5. Work crossed out:
a. where a candidate crosses out an answer and provides an alternative response, the crossed out response is not
marked and gains no marks
b. if a candidate crosses out an answer to a whole question and makes no second attempt, and if the inclusion of the
answer does not cause a rubric infringement, the assessor should attempt to mark the crossed out answer and
award marks appropriately.
6. Always check the pages (and additional objects if present) at the end of the response in case any answers have been
continued there. If the candidate has continued an answer there then add a tick to confirm that the work has been seen.
7. There is a NR (No Response) option. Award NR (No Response)
- if there is nothing written at all in the answer space
- OR if there is a comment which does not in any way relate to the question (e.g. ‘can’t do’, ‘don’t know’)
- OR if there is a mark (e.g. a dash, a question mark) which isn’t an attempt at the question.
Note: Award 0 marks – for an attempt that earns no credit (including copying out the question).
8. The RM Assessor comments box is used by your Team Leader to explain the marking of the practice responses. Please
refer to these comments when checking your practice responses. Do not use the comments box for any other reason.
If you have any questions or comments for your Team Leader, use the phone, the RM Assessor messaging system, or email.
9. Assistant Examiners will send a brief report on the performance of candidates to their Team Leader (Supervisor) via email
by the end of the marking period. The report should contain notes on particular strengths displayed as well as common
errors or weaknesses. Constructive criticism of the question paper/mark scheme is also appreciated.
OCR
Oxford Cambridge and RSA
GCE
Chemistry A
H432/03: Unified chemistry
A Level
Mark Scheme for June 2023
,A level 3
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide
range of qualifications to meet the needs of candidates of all ages and abilities. 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. 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.
© OCR 2023
, 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 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.
3. Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the required number of
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 50%
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, email or via the RM
Assessor messaging system.
, 5. Work crossed out:
a. where a candidate crosses out an answer and provides an alternative response, the crossed out response is not
marked and gains no marks
b. if a candidate crosses out an answer to a whole question and makes no second attempt, and if the inclusion of the
answer does not cause a rubric infringement, the assessor should attempt to mark the crossed out answer and
award marks appropriately.
6. Always check the pages (and additional objects if present) at the end of the response in case any answers have been
continued there. If the candidate has continued an answer there then add a tick to confirm that the work has been seen.
7. There is a NR (No Response) option. Award NR (No Response)
- if there is nothing written at all in the answer space
- OR if there is a comment which does not in any way relate to the question (e.g. ‘can’t do’, ‘don’t know’)
- OR if there is a mark (e.g. a dash, a question mark) which isn’t an attempt at the question.
Note: Award 0 marks – for an attempt that earns no credit (including copying out the question).
8. The RM Assessor comments box is used by your Team Leader to explain the marking of the practice responses. Please
refer to these comments when checking your practice responses. Do not use the comments box for any other reason.
If you have any questions or comments for your Team Leader, use the phone, the RM Assessor messaging system, or email.
9. Assistant Examiners will send a brief report on the performance of candidates to their Team Leader (Supervisor) via email
by the end of the marking period. The report should contain notes on particular strengths displayed as well as common
errors or weaknesses. Constructive criticism of the question paper/mark scheme is also appreciated.
