Summer 2026 Predicted
Mark Scheme (Results)
Summer 2026
Predicted
Pearson Edexcel GCE
Chemistry (9CH0) Paper 03
General and Practical Principles in
Chemistry
for more papers: tyrionpapers.com
,for more papers: 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 papers: tyrionpapers.com
, 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.
for more papers: tyrionpapers.com
Mark Scheme (Results)
Summer 2026
Predicted
Pearson Edexcel GCE
Chemistry (9CH0) Paper 03
General and Practical Principles in
Chemistry
for more papers: tyrionpapers.com
,for more papers: 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 papers: tyrionpapers.com
, 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.
for more papers: tyrionpapers.com
