Mark Scheme (Results)
Summer 2023
Pearson Edexcel GCE
In Chemistry (9CH0)
Paper 01: Advanced Inorganic and
Physical Chemistry
, Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications come from Pearson, the world’s leading
learning company. We provide a wide range of qualifications including
academic, vocational, occupational and specific programmes for employers.
For further information visit our qualifications websites at www.edexcel.com
or www.btec.co.uk for our BTEC qualifications.
Alternatively, you can get in touch with us using the details on our contact us
page at www.edexcel.com/contactus.
If you have any subject specific questions about this specification that require
the help of a subject specialist, you can speak directly to the subject team at
Pearson.
Their contact details can be found on this link:
www.edexcel.com/teachingservices.
You can also use our online Ask the Expert service at www.edexcel.com/ask.
You will need an Edexcel username and password to access this service.
Pearson: helping people progress, everywhere
Our aim is to help everyone progress in their lives through education. We
believe in every kind of learning, for all kinds of people, wherever they are in
the world. We’ve been involved in education for over 150 years, and by
working across 70 countries, in 100 languages, we have built an international
reputation for our commitment to high standards and raising achievement
through innovation in education. Find out more about how we can help you
and your students at: www.pearson.com/uk
Summer 2023
Question Paper Log Number P71912A
Publications Code 9CH0_01_2306_MS
All the material in this publication is copyright
© Pearson Education Ltd 2023
,General Marking Guidance
All candidates must receive the same
treatment. Examiners must mark the first candidate in
exactly the same way as they mark the last.
Mark schemes should be applied positively. Candidates
must be rewarded for what they have shown they can
do rather than penalised for omissions.
Examiners should mark according to the mark scheme
not according to their perception of where the grade
boundaries may lie.
There is no ceiling on achievement. All marks on the
mark scheme should be used appropriately.
All the marks on the mark scheme are designed to be
awarded. Examiners should always award full marks if
deserved, i.e. if the answer matches the mark
scheme. Examiners should also be prepared to award
zero marks if the candidate’s response is not worthy of
credit according to the mark scheme.
Where some judgement is required, mark schemes will
provide the principles by which marks will be awarded
and exemplification may be limited.
When examiners are in doubt regarding the application
of the mark scheme to a candidate’s response, the team
leader must be consulted.
Crossed out work should be marked UNLESS the
candidate has replaced it with an alternative response.
, Using the Mark Scheme
Examiners should look for qualities to reward rather than faults to penalise. This does NOT mean giving credit for incorrect or inadequate answers, but
it does mean allowing candidates to be rewarded for answers showing correct application of principles and knowledge. Examiners should therefore
read carefully and consider every response: even if it is not what is expected it may be worthy of credit.
The mark scheme gives examiners:
an idea of the types of response expected
how individual marks are to be awarded
the total mark for each question
examples of responses that should NOT receive credit.
/ means that the responses are alternatives and either answer should receive full credit.
( ) means that a phrase/word is not essential for the award of the mark, but helps the examiner to get the sense of the expected answer.
Phrases/words in bold indicate that the meaning of the phrase or the actual word is essential to the answer.
ecf/TE/cq (error carried forward) means that a wrong answer given in an earlier part of a question is used correctly in answer to a later part of the same
question.
Candidates must make their meaning clear to the examiner to gain the mark. Make sure that the answer makes sense. Do not give credit for correct
words/phrases which are put together in a meaningless manner. Answers must be in the correct context.
Quality of Written Communication
Questions which involve the writing of continuous prose will expect candidates to:
write legibly, with accurate use of spelling, grammar and punctuation in order to make the meaning clear
select and use a form and style of writing appropriate to purpose and to complex subject matter
organise information clearly and coherently, using specialist vocabulary when appropriate.
Full marks will be awarded if the candidate has demonstrated the above abilities.
Questions where QWC is likely to be particularly important are indicated (QWC) in the mark scheme, but this does not preclude others.
Summer 2023
Pearson Edexcel GCE
In Chemistry (9CH0)
Paper 01: Advanced Inorganic and
Physical Chemistry
, Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications come from Pearson, the world’s leading
learning company. We provide a wide range of qualifications including
academic, vocational, occupational and specific programmes for employers.
For further information visit our qualifications websites at www.edexcel.com
or www.btec.co.uk for our BTEC qualifications.
Alternatively, you can get in touch with us using the details on our contact us
page at www.edexcel.com/contactus.
If you have any subject specific questions about this specification that require
the help of a subject specialist, you can speak directly to the subject team at
Pearson.
Their contact details can be found on this link:
www.edexcel.com/teachingservices.
You can also use our online Ask the Expert service at www.edexcel.com/ask.
You will need an Edexcel username and password to access this service.
Pearson: helping people progress, everywhere
Our aim is to help everyone progress in their lives through education. We
believe in every kind of learning, for all kinds of people, wherever they are in
the world. We’ve been involved in education for over 150 years, and by
working across 70 countries, in 100 languages, we have built an international
reputation for our commitment to high standards and raising achievement
through innovation in education. Find out more about how we can help you
and your students at: www.pearson.com/uk
Summer 2023
Question Paper Log Number P71912A
Publications Code 9CH0_01_2306_MS
All the material in this publication is copyright
© Pearson Education Ltd 2023
,General Marking Guidance
All candidates must receive the same
treatment. Examiners must mark the first candidate in
exactly the same way as they mark the last.
Mark schemes should be applied positively. Candidates
must be rewarded for what they have shown they can
do rather than penalised for omissions.
Examiners should mark according to the mark scheme
not according to their perception of where the grade
boundaries may lie.
There is no ceiling on achievement. All marks on the
mark scheme should be used appropriately.
All the marks on the mark scheme are designed to be
awarded. Examiners should always award full marks if
deserved, i.e. if the answer matches the mark
scheme. Examiners should also be prepared to award
zero marks if the candidate’s response is not worthy of
credit according to the mark scheme.
Where some judgement is required, mark schemes will
provide the principles by which marks will be awarded
and exemplification may be limited.
When examiners are in doubt regarding the application
of the mark scheme to a candidate’s response, the team
leader must be consulted.
Crossed out work should be marked UNLESS the
candidate has replaced it with an alternative response.
, Using the Mark Scheme
Examiners should look for qualities to reward rather than faults to penalise. This does NOT mean giving credit for incorrect or inadequate answers, but
it does mean allowing candidates to be rewarded for answers showing correct application of principles and knowledge. Examiners should therefore
read carefully and consider every response: even if it is not what is expected it may be worthy of credit.
The mark scheme gives examiners:
an idea of the types of response expected
how individual marks are to be awarded
the total mark for each question
examples of responses that should NOT receive credit.
/ means that the responses are alternatives and either answer should receive full credit.
( ) means that a phrase/word is not essential for the award of the mark, but helps the examiner to get the sense of the expected answer.
Phrases/words in bold indicate that the meaning of the phrase or the actual word is essential to the answer.
ecf/TE/cq (error carried forward) means that a wrong answer given in an earlier part of a question is used correctly in answer to a later part of the same
question.
Candidates must make their meaning clear to the examiner to gain the mark. Make sure that the answer makes sense. Do not give credit for correct
words/phrases which are put together in a meaningless manner. Answers must be in the correct context.
Quality of Written Communication
Questions which involve the writing of continuous prose will expect candidates to:
write legibly, with accurate use of spelling, grammar and punctuation in order to make the meaning clear
select and use a form and style of writing appropriate to purpose and to complex subject matter
organise information clearly and coherently, using specialist vocabulary when appropriate.
Full marks will be awarded if the candidate has demonstrated the above abilities.
Questions where QWC is likely to be particularly important are indicated (QWC) in the mark scheme, but this does not preclude others.
