Exam (elaborations)
AS and A level Chemistry Paper 1 multiple choice 2021
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- Chemical Engineering
- Institution
- University Of Cape Town (UCT)
AS and A level Chemistry Paper 1 multiple choice J8une 2021
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Cambridge International AS & A LevelCHEMISTRY 9701/12
Paper 1 Multiple Choice May/June 2021
1 hour
You must answer on the multiple choice answer sheet.
*2669587153*
You will need: Multiple choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)
Data booklet
INSTRUCTIONS
There are forty questions on this paper. Answer all questions.
For each question there are four possible answers A, B, C and D. Choose the one you consider correct
and record your choice in soft pencil on the multiple choice answer sheet.
Follow the instructions on the multiple choice answer sheet.
Write in soft pencil.
Write your name, centre number and candidate number on the multiple choice answer sheet in the
spaces provided unless this has been done for you.
Do not use correction fluid.
Do not write on any bar codes.
You may use a calculator.
INFORMATION
The total mark for this paper is 40.
Each correct answer will score one mark.
Any rough working should be done on this question paper.
This document has 16 pages.
IB21 06_9701_12/3RP
© UCLES 2021 [Turn over
, 2
Section A
For each question there are four possible answers A, B, C and D. Choose the one you consider to be
correct.
Use of the Data Booklet may be appropriate for some questions.
1 Which statement about the Avogadro constant is correct?
A It is the mass of one mole of any element.
B It is the mass of 6.02 1023 atoms of any element.
C It is the number of atoms in one mole of neon.
D It is the number of atoms in 12 g of any element.
2 Which equation represents the first ionisation energy of iodine?
A 1
2
I2(g) + e– I–(g)
B I(g) + e– I–(g)
C 1
2
I2(g) I+(g) + e–
D I(g) I+(g) + e–
3 The structures represent three compounds, each with four carbon atoms per molecule.
X Y Z
O O O
OH O O–Na+
Which row is correct?
lowest highest
boiling point boiling point
A X Y Z
B Y X Z
C Z X Y
D Z Y X
© UCLES 2021 9701/12/M/J/21
, 3
4 The structural formula of alliin is shown.
alliin
H H O NH2
y z
xC C CH2 S CH2 C H
H CO2H
What are the approximate bond angles x, y and z in a molecule of alliin?
x y z
A 90 90 109
B 120 109 90
C 120 120 109
D 180 109 109
5 Flask Q contains 5 dm3 of helium at 12 kPa pressure. Flask R contains 10 dm3 of neon at 6 kPa
pressure.
If the flasks are connected at constant temperature, what is the final pressure?
A 8 kPa B 9 kPa C 10 kPa D 11 kPa
6 Sodium chloride, water and air represent three states of matter – solid, liquid and gas.
Which row is correct?
sodium chloride water air
A particles held can easily be can easily be
in rigid structure compressed compressed
B particles stationary particles move cannot easily be
compressed
C particles stationary particles stationary particles move
D resistant to cannot easily be can easily be
change of shape compressed compressed
© UCLES 2021 9701/12/M/J/21 [Turn over
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