CIE IGCSE Chemistry

Topic Questions

IGCSEChemistryCIETopic Questions2. Atoms, Elements & Compounds2.1 Atomic Structure & the Periodic Table

2.1 Atomic Structure & the Periodic Table

DownloadView
Easy
Medium
Hard
Easy
Medium
Hard
11 mark

Which option correctly describes the relative charges and masses of the subatomic particles?

  Proton Neutron Electron Relative mass of proton
A +1 0 0 0.00054
B 0 +1 +1 1
C 0 +1 -1 0.00054
D +1 0 -1 1

Choose your answer

Did this page help you?

21 mark

The atomic number of element Q is 9 and its mass number is 19.

In which group of the Periodic Table should element Q be placed?

  • Group 0

  • Group I

  • Group VII

  • Group II

Choose your answer

Did this page help you?

31 mark

The diagram shows the atomic structure of an element.

q3-2-1-mcq-easy-cie-igcse-che

Which element is it?

  • Carbon

  • Beryllium

  • Oxygen

  • Boron

Choose your answer

Did this page help you?

41 mark

The atomic structure of atoms Q, R, S and T are shown in the table.

Atom Number of protons Number of neutrons Number of electrons
Q 6 7 6
R 7 7 7
S 6 8 6
T 8 8 8

Which two atoms are isotopes?

A Q and S
B Q and T
C R and T
D R and S

Choose your answer

Did this page help you?

51 mark

Substances can be broadly classified into three categories which are elements, compounds and mixtures.

Which of the following statements is correct?

  • Elements contain different atoms

  • Compounds consist of elements that are not chemically combined

  • Mixtures consist of elements that are chemically combined

  • A mixture can contain elements and compounds

Choose your answer

Did this page help you?

11 mark

The X+ ion of element X has 16 electrons and a nucleon number of 37. 

What is the correct Group number for element X?

  • VII

  • VIII

  • III

  • I

Choose your answer

Did this page help you?

21 mark

Which row of the table correctly describes the link between outer shell electrons, Group number and Period number?

  outer electrons same as group number same as period number same as
A group number period number outer electrons
B period number group number outer electrons
C group number outer electrons number of electron shells
D outer electrons group number number of electron shells

Choose your answer

Did this page help you?

31 mark

Extended Only

Which row correctly describes the number of outer shell electrons and properties of isotopes?

  Number of electrons Chemical properties
A same same
B same different
C different same 
D different different

Choose your answer

Did this page help you?

4
Sme Calculator1 mark

Separate: Chemistry and Extended Only

Iridium has two isotopes, 191Ir and 193Ir. Calculate the relative atomic mass of iridium using the data given:

Mass number 191 193
Percentage abundance  62.7% 37.3%

  • 191.2

  • 191.6

  • 191.7

  • 192.5

Choose your answer

Did this page help you?

51 mark

A selenide ion has the following notation.

Se presubscript 34 presuperscript 79 superscript 2 minus end superscript

Which row correctly describes the subatomic particles in a selenide ion?

  Protons Neutrons Electrons
A 79 34 34
B 34 45 34
C 34 45 36
D 45 34 32

Choose your answer

Did this page help you?

11 mark

The structure of four particles is described in the table.

Particle Number of protons Number of neutrons Number of electrons
Li 3 X 3
Li+ 3 4 2
F Y 10 9
F- 9 10 Z

What are the correct values for X, Y and Z?

  X Y Z
A 4 7 9
B 3 9 9
C 4 9 10
D 3 7 10

Choose your answer

Did this page help you?

21 mark

Element X contains 12 of each sub-atomic particle.

What is the correct Group number for element X?

  • Group 0

  • Group I

  • Group VII

  • Group II

Choose your answer

Did this page help you?

31 mark

Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. What is element X?

  • Beryllium

  • Carbon

  • Tin

  • Lead

Choose your answer

Did this page help you?

41 mark

Potassium fluoride is an ionic compound formed when one atom of potassium bonds with one atom of fluorine.

Which row correctly describes the charge and electronic configuration of each ion in the compound?

  Potassium ion Fluorine ion
A 1 -  2, 8, 8 1 + 2, 8
B 1 + 2, 8, 8 1 - 2, 8
C 1 + 2, 8, 8 ,1 1 - 2, 7
D 1 - 2, 8, 8, 2 1 + 2, 6

Choose your answer

Did this page help you?

51 mark

A section of the Periodic Table is shown below.

q5-2-1-mcq-easy-cie-igcse-chemistry

The electronic structure of elements W, X, Y and Z are shown in the table.

  Electronic structure
W 2, 1
X 2, 4
Y 2, 8, 2
Z 2, 8

Which elements have the correct electronic structure?

A  W and X
B  Y and Z
C  W and Y
D  X and Z

Choose your answer

Did this page help you?