,Mark Scheme (Results)
Summer 2025
Pearson Edexcel GCE A Level
In Chemistry (9CH0)
Paper 01: Advanced Inorganic and Physical
Chemistry
for more resources: tyrionpapers.com
,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 2025
Question Paper Log Number: P77832A
Publications Code: 9CH0_01_2506_MS
All the material in this publication is copyright
© Pearson Education Ltd 2025
for more resources: tyrionpapers.com
, 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.
for more resources: tyrionpapers.com
Summer 2025
Pearson Edexcel GCE A Level
In Chemistry (9CH0)
Paper 01: Advanced Inorganic and Physical
Chemistry
for more resources: tyrionpapers.com
,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 2025
Question Paper Log Number: P77832A
Publications Code: 9CH0_01_2506_MS
All the material in this publication is copyright
© Pearson Education Ltd 2025
for more resources: tyrionpapers.com
, 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.
for more resources: tyrionpapers.com
