Solving of 0620/22/O/N/2022 f

Cambridge IGCSE™

CHEMISTRY 0620/22
Paper 2 Multiple Choice (Extended) October/November 2022
45 minutes

You must answer on the multiple choice answer sheet.
*7173935082*




You will need: Multiple choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)

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.
 The Periodic Table is printed in the question paper.




This document has 16 pages.


IB22 11_0620_22/4RP
© UCLES 2022 [Turn over

, 2

1 The rate of diffusion of three gases, ammonia, carbon dioxide and methane, is measured.

What is the order of the rate of diffusion of the gases from slowest to fastest?

A CO2  NH3  CH4

B CO2  CH4  NH3

C CH4  NH3  CO2

D NH3  CH4  CO2


2 Which description of Brownian motion is correct?

A random movement of particles due to bombardment by larger particles
B random movement of particles due to bombardment by smaller particles
C random movement of particles from a high concentration to a low concentration
D random movement of particles from a low concentration to a high concentration


3 The chromatogram obtained using four substances, J, K, L and M, is shown.

solvent front




baseline
J K L M

Which statement about M is correct?

A It is a mixture of J and K only.
B It is a pure substance.
C It is a mixture of J, K and L.
D It is a mixture of J, K and an unknown substance.




© UCLES 2022 0620/22/O/N/22

, 3

4 Which statements about isotopes of the same element are correct?

1 They are atoms which have the same chemical properties because they have the
same number of electrons in their outer shell.
2 They are atoms which have the same number of electrons and neutrons but
different numbers of protons.
3 They are atoms which have the same number of electrons and protons but different
numbers of neutrons.

A 1 and 2 B 1 and 3 C 2 only D 3 only


5 Which statement about solid magnesium oxide is correct?

A It is a giant structure made up of magnesium and oxygen atoms bonded covalently.
B It is an electrical conductor with mobile magnesium ions and oxygen ions.
C Magnesium loses electrons and these electrons move freely through a lattice.
D Oxygen ions and magnesium ions are attracted to each other in a giant lattice.


6 Which molecule contains only three shared pairs of electrons?

A CH3OH B Cl 2 C H2O D N2


7 Which particles are present in the structure of metals?

1 positive ions
2 negative ions
3 shared pairs of electrons
4 mobile electrons

A 1 and 2 B 1 and 4 C 2 and 3 D 2 and 4




© UCLES 2022 0620/22/O/N/22 [Turn over