Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Tuesday 10 June 2025
Morning (Time: 1 hour 45 minutes) Paper
reference 9CH0/01
Chemistry
Advanced
PAPER 1: Advanced Inorganic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
• Use black ink or ball-point pen.
• IfFillpencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 90.
• 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 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 answer it.
• Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P77832A
©2025 Pearson Education Ltd.
Y:1/1/1/
*P77832A0128*
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 The table shows data for the three stable isotopes of argon.
Isotope Relative isotopic mass Percentage abundance
36
Ar 35.97 0.337
38
Ar 37.96 0.063
40
Ar 39.96 99.600
(a) State what is meant by the term ‘relative isotopic mass’.
(2)
DO NOT WRITE IN THIS AREA
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
(b) State what is meant by the term ‘isotope’.
Illustrate your answer by referring to the numbers of sub-atomic particles in these
isotopes of argon.
(2)
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
DO NOT WRITE IN THIS AREA
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
2
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Tuesday 10 June 2025
Morning (Time: 1 hour 45 minutes) Paper
reference 9CH0/01
Chemistry
Advanced
PAPER 1: Advanced Inorganic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
• Use black ink or ball-point pen.
• IfFillpencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 90.
• 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 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 answer it.
• Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P77832A
©2025 Pearson Education Ltd.
Y:1/1/1/
*P77832A0128*
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 The table shows data for the three stable isotopes of argon.
Isotope Relative isotopic mass Percentage abundance
36
Ar 35.97 0.337
38
Ar 37.96 0.063
40
Ar 39.96 99.600
(a) State what is meant by the term ‘relative isotopic mass’.
(2)
DO NOT WRITE IN THIS AREA
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
(b) State what is meant by the term ‘isotope’.
Illustrate your answer by referring to the numbers of sub-atomic particles in these
isotopes of argon.
(2)
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
DO NOT WRITE IN THIS AREA
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
. . . .. . . . . . ........................ .. .. .. ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . ............................................................................................................................ .. ... .. ... .. ... ... . . .. ... ... ... ... ... .. ..
2
