1
1 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 |
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Atomic Structure & the Periodic Table (Cambridge (CIE) IGCSE Co-ordinated Sciences (Double Award): Chemistry): Exam Questions
Exam code: 0654 & 0973
3 hours39 questions
2
1 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
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3
1 mark
The diagram shows the atomic structure of an element.
Which element is it?
Carbon
Beryllium
Oxygen
Boron
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4
1 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 |
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5
1 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
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1
1 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 |
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2
1 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
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3
1 mark
Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. What is element X?
Beryllium
Carbon
Tin
Lead
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4
1 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 |
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5
1 mark
A section of the Periodic Table is shown below.
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 |
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6
1 mark
Two atoms, X and Y can be represented as shown
Which row is correct for both atoms?
electron configuration of X | electron configuration of Y | Is Y an isotope of X? | |
A | 2,1 | 2,1 | Yes |
B | 2,1 | 2,6 | Yes |
C | 2,5 | 2,1 | No |
D | 2,5 | 2,6 | No |
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1
1 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
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2
1 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 |
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3
1 mark
Extended tier 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 |
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4
1 mark
A selenide ion has the following notation.
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 |
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