WorksheetsMass and atomic
Total questions: 12
Worksheet time: 11mins
Name
Class
Date
1.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
2.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
3.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
4.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
5.
How many electrons are in an atom with an atomic number of 50?
a)
5
b)
8
c)
50
d)
2
6.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
7.
The mass of one proton is greater than the mass of one...
a)
neutron
b)
electron
8.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
9.
What is the atomic number of this nucleus?
a)
1
b)
3
c)
4
d)
7
10.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
11.
What is the atomic number of this atom?
a)
1
b)
2
c)
3
d)
4
12.
What is the atomic number of this atom?
a)
7
b)
14
c)
21
d)
none of the above
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