WorksheetsAtomic Theory & Atomic Math
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
What word did Democritus come up with?
a)
electron
b)
proton
c)
neutron
d)
atom
2.
Who proposed a model with electrons moving in specific orbitals?
a)
Dalton
b)
Rutherford
c)
Bohr
d)
Thomson
3.
Who discovered the electron?
a)
Dalton
b)
Rutherford
c)
Thomson
d)
Bohr
4.
What is the charge on a proton?
a)
positive 1
b)
0
c)
negative 1
5.
What is the charge on a neutron?
a)
positive 1
b)
0
c)
negative 1
6.
What is the charge on an electron?
a)
positive 1
b)
0
c)
negative 1
7.
Where are the protons and neutrons found?
a)
In isotopes
b)
In ions
c)
In the nucleus
d)
In shells
8.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
9.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
10.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
100 %
