2025 Pearson Edexcel Level 3 GCE Chemistry Advanced
PAPER 3: General and Practical Principles in Chemistry Combined Question Paper and Marking Scheme
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Friday 20 June 2025
Morning (Time: 2 hours 30 minutes) Paper
reference 9CH0/03
Chemistry
Advanced
PAPER 3: General and Practical Principles in Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
•• IfUsepencil
black ink or ball-point pen.
is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fillcentre
in the boxesand
number at the top of this
candidate page with your name,
number.
•• Answer
Answer all thequestions.
questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 120.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• For the question marked with an asterisk (*), marks will be awarded for your
ability to structure your answer logically, showing how 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
•• Show
Read each question carefully before you start to answer it.
all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P77834A
©2025 Pearson Education Ltd.
Y:1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
1 This question is about ionisation energies.
The table shows the first four ionisation energies of three elements in the same group
of the Periodic Table.
The letters used are not the symbols of the elements.
First ionisation Second ionisation Third ionisation Fourth ionisation
Element energy energy energy energy
/ kJ mol−1 / kJ mol−1 / kJ mol−1 / kJ mol−1
X 403 2632 3900 5080
Y 419 3051 4412 5877
Z 496 4563 6913 9544
DO NOT WRITE IN THIS AREA
(a) State what is meant by the term ‘first ionisation energy’.
(2)
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(b) Explain to which group the elements X, Y and Z belong.
(2)
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DO NOT WRITE IN THIS AREA
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2
, (c) Explain which of the elements X, Y and Z has the highest atomic number.
(3)
DO NOT WRITE IN THIS AREA
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(Total for Question 1 = 7 marks)
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
3
Turn over
, 2 This question is about compounds that contain both an alkene and an alcohol
functional group.
DO NOT WRITE IN THIS AREA
(a) Prop-2-en-1-ol, present in garlic, has the structure shown.
H CH2OH
C C
H H
(i) Describe a test, and the positive result, that confirms the presence of a
C C group.
(2)
Test
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
Result
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(ii) Prop-2-en-1-ol reacts with hydrogen bromide to form 3-bromopropan-1-ol as
one of the products.
Draw a mechanism for this reaction.
Include curly arrows, and relevant lone pairs and dipoles.
(3)
H CH2OH
C C
H H
DO NOT WRITE IN THIS AREA
4
PAPER 3: General and Practical Principles in Chemistry Combined Question Paper and Marking Scheme
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Friday 20 June 2025
Morning (Time: 2 hours 30 minutes) Paper
reference 9CH0/03
Chemistry
Advanced
PAPER 3: General and Practical Principles in Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
•• IfUsepencil
black ink or ball-point pen.
is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fillcentre
in the boxesand
number at the top of this
candidate page with your name,
number.
•• Answer
Answer all thequestions.
questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 120.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• For the question marked with an asterisk (*), marks will be awarded for your
ability to structure your answer logically, showing how 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
•• Show
Read each question carefully before you start to answer it.
all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P77834A
©2025 Pearson Education Ltd.
Y:1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
1 This question is about ionisation energies.
The table shows the first four ionisation energies of three elements in the same group
of the Periodic Table.
The letters used are not the symbols of the elements.
First ionisation Second ionisation Third ionisation Fourth ionisation
Element energy energy energy energy
/ kJ mol−1 / kJ mol−1 / kJ mol−1 / kJ mol−1
X 403 2632 3900 5080
Y 419 3051 4412 5877
Z 496 4563 6913 9544
DO NOT WRITE IN THIS AREA
(a) State what is meant by the term ‘first ionisation energy’.
(2)
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(b) Explain to which group the elements X, Y and Z belong.
(2)
............................................................................................................................... ............................................................................................................................... ......................
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
2
, (c) Explain which of the elements X, Y and Z has the highest atomic number.
(3)
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(Total for Question 1 = 7 marks)
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
3
Turn over
, 2 This question is about compounds that contain both an alkene and an alcohol
functional group.
DO NOT WRITE IN THIS AREA
(a) Prop-2-en-1-ol, present in garlic, has the structure shown.
H CH2OH
C C
H H
(i) Describe a test, and the positive result, that confirms the presence of a
C C group.
(2)
Test
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
Result
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(ii) Prop-2-en-1-ol reacts with hydrogen bromide to form 3-bromopropan-1-ol as
one of the products.
Draw a mechanism for this reaction.
Include curly arrows, and relevant lone pairs and dipoles.
(3)
H CH2OH
C C
H H
DO NOT WRITE IN THIS AREA
4
