Worksheetsstructure of an atom
Total questions: 10
Worksheet time: 4mins
Name
Class
Date
1.
which are the sub-atomic particles
a)
protons
b)
neutrons
c)
electrons
d)
valency
e)
shells
2.
what is capacity of the 3rd shell
(a)
3.
define valency
4 lines
4.
What is the atomic number?
a)
number of protons
b)
number of neutrons
5.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
6.
The relative mass of a proton is...
a)
Negligible
b)
1
c)
0
d)
-1
7.
Who came up with the idea for the 'plum pudding' atomic structure?
a)
Dalton
b)
J.J. Thomson
c)
Rutherford
d)
Bohr
8.
Name the region where electrons are found in an atom
a)
Nucleus
b)
Electron cloud
c)
Atmosphere
d)
Cloud
9.
What is the electrical charge of a nucleus?
a)
-Ve
b)
+Ve
c)
Neutral
10.
An electron has a _____ charge.
a)
negative
b)
positive
c)
neutral
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