Worksheetsatomic structure
Total questions: 8
Worksheet time: 7mins
Name
Class
Date
1.
Thomson model of atom is called
a)
Pudding model
b)
Rutherford model
c)
Bohr model
d)
None of the above
2.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
3.
The mass number of an element that has 18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
4.
Atoms of the same element must always have the same number of _________
a)
electrons
b)
neutrons
c)
isotopes
d)
protons
5.
How many electrons does a sodium atom have?
a)
23
b)
11
c)
12
d)
34
6.
How many protons does an aluminum atom have?
a)
27
b)
14
c)
40
d)
13
7.
The total number of protons and neutrons in an atom is called the...
a)
Atomic number
b)
Proton number
c)
Mass number
d)
Weight number
8.
What electrical charge does a proton have?
a)
+1
b)
0
c)
-1
d)
+2
100 %
