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WorksheetsAtomic Models and Periodic Table
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Which scientist discovered the electron?
a)
Bohr
b)
Rutherford
c)
Dalton
d)
Thomson
2.
Which scientist thought that electrons orbit the nucleus in specific rings?
a)
Bohr
b)
Rutherford
c)
Dalton
d)
Thomson
3.
Which subatomic particle has a negative charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
4.
Which scientist thought of atoms as tiny solid spheres?
a)
Rutherford
b)
Bohr
c)
Thomson
d)
Dalton
5.
Which scientist discovered the atomic nucleus?
a)
Bohr
b)
Rutherford
c)
Dalton
d)
Thomson
6.
Which two particles make up the atomic nucleus?
a)
proton, electron
b)
neutron, electron
c)
proton, neutron
d)
electron, quark
7.
Which part of the atom makes up the majority of the mass?
a)
Electron
b)
Nucleus
c)
Proton
d)
Electron Cloud
8.
This is the lightest element in period 4.
a)
Potassium
b)
Beryllium
c)
Carbon
d)
Helium
9.
The first energy level can hold this number of electrons.
a)
2
b)
4
c)
8
d)
18
10.
The noble gas that does not have 8 valence electrons.
a)
Neon
b)
Oxygen
c)
Helium
d)
Hydrogen
11.
This element has 30 neutrons.
a)
Phosphorus
b)
Zinc
c)
Calcium
d)
Iron
12.
This element has 3 energy levels and 2 valence electrons.
a)
Boron
b)
Lithium
c)
Magnesium
d)
Helium
13.
The number of electrons in an atom of mercury.
a)
80
b)
201
c)
121
d)
281
14.
A horizontal row in the periodic table is called....
a)
Group
b)
Family
c)
Column
d)
Period
15.
The number of protons in an atom of Bromine.
a)
35
b)
80
c)
45
d)
115
16.
Which part of the atom makes up the majority of its volume?
a)
Nucleus
b)
Electron Cloud
c)
Proton
d)
Neutron
17.
Which two subatomic particles are most similar in mass?
a)
Quark, Neutron
b)
Neutron, Electron
c)
Proton, Electron
d)
Proton, Neutron
18.
This British school teacher is credited with proposing the first atomic theory.
a)
Rutherford
b)
Thomson
c)
Dalton
d)
Bohr
19.
The most modern atomic model is called....
a)
Planetary Model
b)
Plum Pudding Model
c)
Electron Cloud Model
d)
Democritus Model
20.
This is formed when the number of electrons and protons are not equal.
a)
atom
b)
ion
c)
molecule
d)
neutron
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