Exam (elaborations)
EDEXCEL A LEVEL CHEMISTRY QUESTION PAPER 1 2024
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Exam of 28 pages for the course Unit 1 - Atomic Structure and the Periodic Table at PEARSON (Paper only)
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Please check the examination details below before entering your candidate informationCandidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Monday 10 June 2024
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.
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.
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 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
P76895A
©2024 Pearson Education Ltd.
F:1/1/1/1/
*P76895A0128*
, 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 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 This question is about atomic structure.
(a) Complete the table.
(3)
Species Number of protons Number of neutrons Number of electrons
32
S
33
S
34 2−
S
(b) A sample of sulfur was found to contain only four isotopes.
(i) Complete the table to show the percentage abundance of 34S.
(1)
32 33 34 36
Isotope S S S S
Percentage
95.02 0.75 0.02
abundance
(ii) Calculate the relative atomic mass (Ar ) of the sulfur in this sample using the
data in the table. Give your answer to two decimal places.
(2)
(Total for Question 1 = 6 marks)
2
*P76895A0228*
, 2 This question is about the formation of ions.
(a) Explain the trend in the values of the first electron affinities of the
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elements shown.
(4)
Element First electron affinity / kJ mol−1
chlorine −349
bromine −325
iodine −295
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(b) Which of these isoelectronic ions has the smallest ionic radius?
(1)
A S2−
B Cl−
C K+
D Ca2+
3
*P76895A0328* Turn over
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