Chemistry paper3
Please check the examination details below before entering your
candidate information
Candidate surnameOther names
Centre Number Candidate Number
Pearson Edexcel Level
3 GCE
Friday 20 June 2025
Morning (Time: 2 hours 30 minutes)
referen
Paper
9CH0/
ce
Chemistry 03
🟐 🟐
Advanced
PAPER 3: General and Practical Principles in
Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
• Use black ink or ball-point
• If pencil is used for diagrams/sketches/graphs it must be dark
• Fill
pen.in
(HB or the boxes number
B). centre at the top of this
and page with
candidate your
number.
• provided – there may be more space
• Answer
name, all
Answer the questions in the spaces
questions.
than you need.
Information
• The total mark for this paper is 120.
• The marks for each question are shown in
– 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
brackets
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
• Read each question carefully before you start to
• Show all your working in calculations and include units where appropriate.
• Check
answeryour
it. answers if you have time at Turn over
the end.
P77834A
©2025 Pearson
Chemistry paper3
,Education Ltd. Y:1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
AREA
DO NOT WRITE IN THIS
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
(a) State what is meant by the term ‘first ionisation
AREA
DO NOT WRITE IN THIS
energy’. (2)
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
(b) Explain to which group the elements X, Y and Z belong.
(2)
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
AREA
DO NOT WRITE IN THIS
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
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
Please check the examination details below before entering your
candidate information
Candidate surnameOther names
Centre Number Candidate Number
Pearson Edexcel Level
3 GCE
Friday 20 June 2025
Morning (Time: 2 hours 30 minutes)
referen
Paper
9CH0/
ce
Chemistry 03
🟐 🟐
Advanced
PAPER 3: General and Practical Principles in
Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
• Use black ink or ball-point
• If pencil is used for diagrams/sketches/graphs it must be dark
• Fill
pen.in
(HB or the boxes number
B). centre at the top of this
and page with
candidate your
number.
• provided – there may be more space
• Answer
name, all
Answer the questions in the spaces
questions.
than you need.
Information
• The total mark for this paper is 120.
• The marks for each question are shown in
– 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
brackets
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
• Read each question carefully before you start to
• Show all your working in calculations and include units where appropriate.
• Check
answeryour
it. answers if you have time at Turn over
the end.
P77834A
©2025 Pearson
Chemistry paper3
,Education Ltd. Y:1/1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
AREA
DO NOT WRITE IN THIS
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
(a) State what is meant by the term ‘first ionisation
AREA
DO NOT WRITE IN THIS
energy’. (2)
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
(b) Explain to which group the elements X, Y and Z belong.
(2)
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
AREA
DO NOT WRITE IN THIS
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
......... ........... ........... ........... .......... ........... ........... ........... ........... ........... ............ ........ ...... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........... ......................
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
