Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Tuesday 12 May 2026 Mark Scheme (Results)
Morning (Time: 1 hour 30 minutes) Paper
reference 8CH0/01
Chemistry
Advanced Subsidiary
Summer 2026
PAPER 1: Core Inorganic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Edexcel Advanced Subsidiary in Chemistry
Instructions
8CH0/01
•• Use black ink or ball-point pen.
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
• Answer all questions.
• – there may
Answer the questions in the spaces provided
be more space than you need.
Information
• The total mark for this paper is 80.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• toForstructure
the question marked with an asterisk (*), marks will be awarded for your ability
your answer logically, showing the points that you make are related or
follow on from each other where appropriate.
• A Periodic Table is printed on the back cover of this paper.
Advice
• Read each question carefully before you start to answer it.
• Show all your working in calculations and include units where appropriate.
• your answers if you have time at the end.
Check Turn over
P74447A Education Ltd.
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*P74447A0128*
, Answer ALL questions.
Edexcel and BTEC Qualifications
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 What is the sign (if any) of ionisation energies when measured in kJ mol−1 ? Edexcel and BTEC qualifications are awarded by the UK’s
largest awarding body. We provide a wide range of qualifications
A no sign including academic, vocational, occupational and specific
programmes for employers. For further information visit our
B positive
qualifications websites at or .
C negative Alternatively, you can get in touch with us using the details on our
D negative or positive contact us page at
(Total for Question 1 = 1 mark)
2 Which does not indicate the existence of quantum shells in atoms?
A the atomic emission spectrum of an element
helping people progress, everywhere
B the direction of electron spin in an atom of an element
aspires to be the world’s leading learning company. Our aim is to help
C the first ionisation energies of successive elements
everyone progress in their lives through education. We believe in every kind of
D the successive ionisation energies of electrons in an atom 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
(Total for Question 2 = 1 mark)
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find
3 Which is the electronic configuration of the gallium ion, Ga3+?
out more about how we can help you and your students at:
The atomic number of gallium is 31.
A 1s22s22p63s23p63d84s2
B 1s22s22p63s23p63d9
C 1s22s22p63s23p63d10
D 1s22s22p63s23p63d104s2
(Total for Question 3 = 1 mark)
Summer 2026
Question Paper Log Number P74447A
Publication Code 8CH0_01_2606_MS
All the material in this publication is
2
*P74447A0228*
, 4 This question is about structure and bonding in Group 4 elements and
their compounds.
General Marking Guidance
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(a) Quartz is a naturally occurring form of the compound silicon dioxide (SiO2).
Complete the dot-and-cross diagram for a section of the structure of quartz. • All candidates must receive the same treatment. Examiners must mark the
Show only the outer electrons for the central silicon atom and its four first candidate in exactly the same way as they mark the last.
surrounding oxygen atoms.
• Mark schemes should be applied positively. Candidates must be rewarded
Use dots ( • ) for the silicon electrons and crosses (×) for the oxygen electrons. for what they have shown they can do rather than penalised for omissions.
(2)
• 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.
Si
• 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.
O
• 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
Si O Si O Si 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.
O
Si
3
*P74447A0328* Turn over
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Tuesday 12 May 2026 Mark Scheme (Results)
Morning (Time: 1 hour 30 minutes) Paper
reference 8CH0/01
Chemistry
Advanced Subsidiary
Summer 2026
PAPER 1: Core Inorganic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Edexcel Advanced Subsidiary in Chemistry
Instructions
8CH0/01
•• Use black ink or ball-point pen.
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
• Answer all questions.
• – there may
Answer the questions in the spaces provided
be more space than you need.
Information
• The total mark for this paper is 80.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• toForstructure
the question marked with an asterisk (*), marks will be awarded for your ability
your answer logically, showing the points that you make are related or
follow on from each other where appropriate.
• A Periodic Table is printed on the back cover of this paper.
Advice
• Read each question carefully before you start to answer it.
• Show all your working in calculations and include units where appropriate.
• your answers if you have time at the end.
Check Turn over
P74447A Education Ltd.
P:1/1/1/1/1/1/1/1/
*P74447A0128*
, Answer ALL questions.
Edexcel and BTEC Qualifications
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 What is the sign (if any) of ionisation energies when measured in kJ mol−1 ? Edexcel and BTEC qualifications are awarded by the UK’s
largest awarding body. We provide a wide range of qualifications
A no sign including academic, vocational, occupational and specific
programmes for employers. For further information visit our
B positive
qualifications websites at or .
C negative Alternatively, you can get in touch with us using the details on our
D negative or positive contact us page at
(Total for Question 1 = 1 mark)
2 Which does not indicate the existence of quantum shells in atoms?
A the atomic emission spectrum of an element
helping people progress, everywhere
B the direction of electron spin in an atom of an element
aspires to be the world’s leading learning company. Our aim is to help
C the first ionisation energies of successive elements
everyone progress in their lives through education. We believe in every kind of
D the successive ionisation energies of electrons in an atom 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
(Total for Question 2 = 1 mark)
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find
3 Which is the electronic configuration of the gallium ion, Ga3+?
out more about how we can help you and your students at:
The atomic number of gallium is 31.
A 1s22s22p63s23p63d84s2
B 1s22s22p63s23p63d9
C 1s22s22p63s23p63d10
D 1s22s22p63s23p63d104s2
(Total for Question 3 = 1 mark)
Summer 2026
Question Paper Log Number P74447A
Publication Code 8CH0_01_2606_MS
All the material in this publication is
2
*P74447A0228*
, 4 This question is about structure and bonding in Group 4 elements and
their compounds.
General Marking Guidance
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(a) Quartz is a naturally occurring form of the compound silicon dioxide (SiO2).
Complete the dot-and-cross diagram for a section of the structure of quartz. • All candidates must receive the same treatment. Examiners must mark the
Show only the outer electrons for the central silicon atom and its four first candidate in exactly the same way as they mark the last.
surrounding oxygen atoms.
• Mark schemes should be applied positively. Candidates must be rewarded
Use dots ( • ) for the silicon electrons and crosses (×) for the oxygen electrons. for what they have shown they can do rather than penalised for omissions.
(2)
• 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.
Si
• 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.
O
• 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
Si O Si O Si 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.
O
Si
3
*P74447A0328* Turn over
