H032/01: Breadth in chemistry Mark Scheme 2022.
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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 2022
H032/01 Mark Scheme
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Longer Answer Questions (requiring a developed response)
Where candidates have provided two (or more) responses to a medium or high tariff question which onand not crossed out the first response, then only the first response should be marked. Examiners will nto whether the second (or a subsequent) response is a ‘new start’ or simply a poorly expressed contin6. Always check the pages (and additional objects if present) at the end of the response in case any answcandidate has continued an answer there, then add a tick to confirm that the work has been seen.
7. Award No Response (NR) if:
• there is nothing written in the answer space
Award Zero ‘0’ if:
• anything is written in the answer space and is not worthy of credit (this includes text and sTeam Leaders must confirm the correct use of the NR button with their markers before live marking coreviewing scripts.
8. The RM Assessor comments box is used by your team leader to explain the marking of the practice rcomments when checking your practice responses. Do not use the comments box for any other reaIf you have any questions or comments for your team leader, use the phone, the RM Assessor messag9. Assistant Examiners will send a brief report on the performance of candidates to their Team Leader (Smarking period. The report should contain notes on particular strengths displayed as well as common criticism of the question paper/mark scheme is also appreciated.
H032/01 Mark Scheme
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10. For answers marked by levels of response: Not applicable in F501
a. To determine the level – start at the highest level and work down until you reach the level thb. To determine the mark within the level, consider the following
Descriptor Award mark
On the borderline of this level and the one
below At bottom of level
Just enough achievement on balance for this
level
Above bottom and either below middle or at middle of leveavailable)
Meets the criteria but with some slight
inconsistency
Above middle and either below top of level or at middle ofmarks available)
Consistently meets the criteria for this level At top of level
H032/01 Mark Scheme
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11. Annotations available in RM Assessor
Annotation Meaning
Correct response
Incorrect response
Omission mark
Benefit of doubt given
Contradiction
Rounding error
Error in number of significant figures
Error carried forward
Level 1
Level 2
Level 3
Benefit of doubt not given
Noted but no credit given
Ignore
Blank page
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12. Abbreviations, annotations and conventions used in the detailed Mark Scheme (to include abbreviationsAnnotation Meaning
DO NOT ALLOW Answers which are not worthy of credit
IGNORE Statements which are irrelevant
ALLOW Answers that can be accepted
( ) Words which are not essential to gain credit
__ Underlined words must be present in answer to score a mark
ECF Error carried forward
AW Alternative wording
ORA Or reverse argument
13. Subject-specific Marking Instructions
H032/01 Mark Scheme
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INTRODUCTION
Your first task as an Examiner is to become thoroughly familiar with the material on which the examination d• the specification, especially the assessment objectives
• the question paper
• the mark scheme.
You should ensure that you have copies of these materials.
You should ensure also that you are familiar with the administrative procedures related to the marking procebooklet Instructions for Examiners. If you are examining for the first time, please read carefully AppendixNotes for New Examiners.
Please ask for help or guidance whenever you need it. Your first point of contact is your Team Leader.
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SECTION A
Question Answer Marks AO
element
1 B 1 AO1.1
2 A 1 AO1.1
3 D 1 AO1.1
4 C 1 AO2.1
5 D 1 AO1.2
6 B 1 AO2.1
7 C 1 AO2.2
8 B 1 AO2.4
9 D 1 AO2.6
10 D 1 AO1.1
11 A 1 AO2.2
12 D 1 AO1.1
13 A 1 AO2.6
14 D 1 AO1.2
15 C 1 AO1.2
16 D 1 AO2.6
17 D 1 AO1.2
18 B 1 AO1.1
19 A 1 AO2.5
20 C 1 AO2.5
Total 20
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SECTION B
Question Answer Marks AO
element
21 (a) (i) 3,3-dimethylbut-1-ene
CARE: Look for dimethyl
1 AO1.2
× 1
IGNORE lack or spaces
ALLOW full ste.g. 3.3 dimethDO NOT ALLO(ii) ANNOTATE ANSWER WITH TICKS AND CROSSES
1st curly arrow (from ANY alkene)
Curly arrow from double bond to Br of Br–Br
DO NOT ALLOW partial charge on C=C
2nd curly arrow
Correct dipole on Br–Br
AND curly arrow for breaking of Br–Br bond
5
AO1.2
AO1.2
For curly arrowarrows and sm1st curly arro• go to a AND
• start froacross2nd curly arro• start froδ+Br–B• AND g
H032/01 Mark Scheme
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Question Answer Marks AO
element
3rd curly arrow
Correct carbocation with + charge on C with 3
bonds
AND curly arrow from Br–
to C+ of carbocation
DO NOT ALLOW δ+ on C of carbocation
OR
i.e. ALLOW carbonium + on either C atom
Correct product to match mechanism/intermediate
DO NOT ALLOW half headed or double headed arrows
but allow ECF if seen more than once
Name of mechanism: Electrophilic addition
AO2.5
AO2.5
AO1.1
IGNORE connand product a3rd curly arrow• go to thAND
• start froacross• OR sta(Lone pair NOTfrom – charge oALLOW bromoALLOW any cOR displayed NOTE: For a marks EXCEP(b) [Show Less]