Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Tuesday 19 May 2026 Mark Scheme (Results)
Morning (Time: 1 hour 30 minutes) Paper
reference 8CH0/02
Chemistry
Advanced Subsidiary Summer 2026
PAPER 2: Core Organic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Edexcel Advanced Subsidiary in Chemistry
Instructions
8CH0/02
•• 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
P74448A Education Ltd.
P:1/1/1/1/1/1/1/1/1/
*P74448A0128*
, Edexcel and BTEC Qualifications
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
Edexcel and BTEC qualifications are awarded by the UK’s
largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
programmes for employers. For further information visit our
qualifications websites at or .
Alternatively, you can get in touch with us using the details on our
contact us page at
helping people progress, everywhere
aspires to be the world’s leading learning company. 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
BLANK PAGE 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:
Summer 2026
Question Paper Log Number P74448A
Publication Code 8CH0_02_2606_MS
All the material in this publication is
2
*P74448A0228*
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an 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
answer, put a line through the box and then mark your new answer with a cross .
1 Alkanes are a homologous series of hydrocarbons used as fuels. • All candidates must receive the same treatment. Examiners must mark the
first candidate in exactly the same way as they mark the last.
(a) The production of fuels includes the process of reforming.
• Mark schemes should be applied positively. Candidates must be rewarded
Reforming improves fuel combustion efficiency by converting straight-chain for what they have shown they can do rather than penalised for omissions.
alkanes into cyclic hydrocarbons or into branched-chain alkanes.
• Examiners should mark according to the mark scheme not according to their
For example, octane may be converted by reforming into cyclooctane or into the perception of where the grade boundaries may lie.
branched‑chain alkane shown.
• 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
(i) What is the name of this branched‑chain compound? mark scheme. Examiners should also be prepared to award zero marks if the
(1) candidate’s response is not worthy of credit according to the mark scheme.
A 2,2,4‑trimethylpentane • Where some judgement is required, mark schemes will provide the principles
by which marks will be awarded and exemplification may be limited.
B 2,4,4‑trimethylpentane
• When examiners are in doubt regarding the application of the mark scheme
C 1,1,1,3‑tetramethylbutane to a candidate’s response, the team leader must be consulted.
D 2,4,4,4‑tetramethylbutane • Crossed out work should be marked UNLESS the candidate has replaced it
with an alternative response.
(ii) Write the equation for the conversion of octane into cyclooctane showing the
structure of the organic product.
(2)
3
*P74448A0328* Turn over
Candidate surname Other names
Centre Number Candidate Number
Edexcel Level 3 GCE
Tuesday 19 May 2026 Mark Scheme (Results)
Morning (Time: 1 hour 30 minutes) Paper
reference 8CH0/02
Chemistry
Advanced Subsidiary Summer 2026
PAPER 2: Core Organic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Edexcel Advanced Subsidiary in Chemistry
Instructions
8CH0/02
•• 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
P74448A Education Ltd.
P:1/1/1/1/1/1/1/1/1/
*P74448A0128*
, Edexcel and BTEC Qualifications
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
Edexcel and BTEC qualifications are awarded by the UK’s
largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
programmes for employers. For further information visit our
qualifications websites at or .
Alternatively, you can get in touch with us using the details on our
contact us page at
helping people progress, everywhere
aspires to be the world’s leading learning company. 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
BLANK PAGE 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:
Summer 2026
Question Paper Log Number P74448A
Publication Code 8CH0_02_2606_MS
All the material in this publication is
2
*P74448A0228*
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an 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
answer, put a line through the box and then mark your new answer with a cross .
1 Alkanes are a homologous series of hydrocarbons used as fuels. • All candidates must receive the same treatment. Examiners must mark the
first candidate in exactly the same way as they mark the last.
(a) The production of fuels includes the process of reforming.
• Mark schemes should be applied positively. Candidates must be rewarded
Reforming improves fuel combustion efficiency by converting straight-chain for what they have shown they can do rather than penalised for omissions.
alkanes into cyclic hydrocarbons or into branched-chain alkanes.
• Examiners should mark according to the mark scheme not according to their
For example, octane may be converted by reforming into cyclooctane or into the perception of where the grade boundaries may lie.
branched‑chain alkane shown.
• 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
(i) What is the name of this branched‑chain compound? mark scheme. Examiners should also be prepared to award zero marks if the
(1) candidate’s response is not worthy of credit according to the mark scheme.
A 2,2,4‑trimethylpentane • Where some judgement is required, mark schemes will provide the principles
by which marks will be awarded and exemplification may be limited.
B 2,4,4‑trimethylpentane
• When examiners are in doubt regarding the application of the mark scheme
C 1,1,1,3‑tetramethylbutane to a candidate’s response, the team leader must be consulted.
D 2,4,4,4‑tetramethylbutane • Crossed out work should be marked UNLESS the candidate has replaced it
with an alternative response.
(ii) Write the equation for the conversion of octane into cyclooctane showing the
structure of the organic product.
(2)
3
*P74448A0328* Turn over
