VERIFIED
surname names
Number Number
Level 3 GCE
Time 1 hour 45 minutes
Paper
reference 9CH0/01
Chemistry
Advanced
PAPER 1: Advanced Inorganic and Physical Chemistry
Ruler
Instructions
• Use black ink or black ball-point pen.
• centrethe
Fill in 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.
• Show all your working in calculations and include units where appropriate.
Information
• The
• – usemarks
total mark for this paper is 90.
The for each question are shown in brackets
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 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.
Check your answers if you have time at the end.
• Good luck with your examination.
Turn over
P65463A
©2021 Pearson Education Ltd.
, Answer ALL questions.
Some questions must be answered with a cross in a box .
If you change your mind about an answer, put a line through the box
and then mark your new answer with a cross .
1 This is a question about atoms, isotopes and ions.
(a) Which of the following pairs of ions is isoelectronic?
(1)
A N3– and Cl–
B O2– and S2–
C Na+ and K+
D Na+ and Mg2+
(b) Which is a correct definition of relative isotopic mass?
(1)
A the weighted mean mass of an atom of an element relative to one twelfth of
the mass of an atom of the isotope carbon-12
B the mass of one atom of an isotope relative to one twelfth of the mass of an
atom of the isotope carbon-12
C the weighted mean mass of an atom of an element relative to 12 g of the
isotope carbon-12
D the mass of one atom of an isotope relative to the mass of 12 g of the
isotope carbon-12
2
,(c) The percentage composition of the two bromine isotopes in a sample is given in
the table.
Isotope Relative isotopic mass Percentage abundance
bromine-79 78.918 50.52
bromine-81 80.916 49.48
Calculate the relative atomic mass of bromine in this sample.
Give your answer to two decimal places.
(2)
(Total for Question 1 = 4 marks)
3
, Turn over
surname names
Number Number
Level 3 GCE
Time 1 hour 45 minutes
Paper
reference 9CH0/01
Chemistry
Advanced
PAPER 1: Advanced Inorganic and Physical Chemistry
Ruler
Instructions
• Use black ink or black ball-point pen.
• centrethe
Fill in 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.
• Show all your working in calculations and include units where appropriate.
Information
• The
• – usemarks
total mark for this paper is 90.
The for each question are shown in brackets
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 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.
Check your answers if you have time at the end.
• Good luck with your examination.
Turn over
P65463A
©2021 Pearson Education Ltd.
, Answer ALL questions.
Some questions must be answered with a cross in a box .
If you change your mind about an answer, put a line through the box
and then mark your new answer with a cross .
1 This is a question about atoms, isotopes and ions.
(a) Which of the following pairs of ions is isoelectronic?
(1)
A N3– and Cl–
B O2– and S2–
C Na+ and K+
D Na+ and Mg2+
(b) Which is a correct definition of relative isotopic mass?
(1)
A the weighted mean mass of an atom of an element relative to one twelfth of
the mass of an atom of the isotope carbon-12
B the mass of one atom of an isotope relative to one twelfth of the mass of an
atom of the isotope carbon-12
C the weighted mean mass of an atom of an element relative to 12 g of the
isotope carbon-12
D the mass of one atom of an isotope relative to the mass of 12 g of the
isotope carbon-12
2
,(c) The percentage composition of the two bromine isotopes in a sample is given in
the table.
Isotope Relative isotopic mass Percentage abundance
bromine-79 78.918 50.52
bromine-81 80.916 49.48
Calculate the relative atomic mass of bromine in this sample.
Give your answer to two decimal places.
(2)
(Total for Question 1 = 4 marks)
3
, Turn over
