Name
Class
set 1
1. The Russian scientist who created one of the first periodic tables by using atomic
mass was:
a) Bohr
b) Rutherford
c) Mendeleev
d) Thomson
2.
a)
b)
c)
d)
In the modern periodic table elements are arranged by:
atomic mass
atomic number
valence electrons
number of isotopes
3.
a)
b)
c)
Which elements have similar chemical properties?
Elements in the same period of the Periodic Table
Elements with the same number of electrons in their outer energy level
Elements with similar mass numbers
4.
a)
b)
c)
d)
The periodic table has __ periods.
18
8
2
7
5.
a)
b)
c)
What are isotopes?
Compounds with the same molecular formulae but different structural formulae
Atoms with the same mass number but different atomic number
Atoms with the same number of protons but a different number of neutrons
6. The vertical columns on the periodic table that have common properties are called
a) Groups
b) Periods
c) Shells
d) Valences
7. А certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number
is
a) 26
b) 30
c) 52
d) 56
8. What are the elements in group 17 of the periodic table called?
a) Alkali metals
b) Alkaline earth metals
c) Halogens
d) Noble gases
9. Which of the following is a Halogen?
a) Bromine
b) Rubidium
c) Argon
d) Beryllium
10.Which element is found in Period 4 and Group 2?
a)
b)
c)
d)
Helium
Beryllium
Calcium
Strontium
11. X, Y and Z are the elements of Dobereiner’s triad. If atomic mass of element X 7 is
and that of element Z is 39, find the atomic mass of Y
12. Elements X has three isotopes 28Si = 92,23, 29Si – 4,68
the average atomic mass of element X
Si – 3,09. Calculate
30
Name
Class
set 2
1. Who created the first accepted version of the Periodic Table?
a) Rutherford
b) Thompson
c) Dalton
d) Mendeleev
2.
a)
b)
c)
d)
In the modern periodic table elements are arranged by:
atomic mass
atomic number
valence electrons
number of isotopes
3.
a)
b)
c)
Elements in a ..................have similar chemical properties.
period
group
row
4.
a)
b)
c)
d)
The periodic table has __ groups.
18
8
2
7
5. What are isotopes?
a) Compounds with the same molecular formulae but different structural
formulae
b) Atoms with the same mass number but different atomic number
c) Atoms with the same number of protons but a different number of neutrons
6. The vertical columns on the periodic table that have common properties are
called
a) Groups
b) Periods
c) Shells
d) Valences
7. А certain atom has 30 protons, 30 electrons, and 35 neutrons. Its mass number
is
a) 30
b) 35
c) 45
d) 65
8.
a)
b)
c)
d)
What are the elements in group 1 of the periodic table called?
Alkali metals
Alkaline earth metals
Halogens
Noble gases
9.
a)
b)
c)
d)
Which of the following is an Alkaline Earth Metal?
Calcium
Lithium
Phosphorus
Copper
10. What period and group is Flourine on the periodic table?
Period 7, Group 3
Period 5, Group 4
Period 2, Group 17
Period 8, Group 2
11. X, Y and Z are the elements of Dobereiner’s triad. If atomic mass of element X
31 is and that of element Z is 119, find the atomic mass of Y
24
12. Elements X has three isotopes
Si = 78,99,
Calculate the average atomic mass of element X
Si – 10,0
25
Si – 11.01.
26