WorksheetsChemistry-3 Atoms Preview
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
All matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
2.
What is at the center of every atom?
a)
an electron
b)
a compound
c)
a molecule
d)
a nucleus
3.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
4.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
5.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
6.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
7.
If an atom has 3 electrons, how many protons does it have?
a)
1
b)
2
c)
4
d)
3
8.
The word "atom" comes from a Greek word that means
a)
Impossible
b)
Indivisible
c)
Unsafe
d)
Unreal
9.
How did Rutherford discover the nucleus?
a)
Cathode tube ray experiment
b)
Gold Foil Experiment
c)
Planetary Model
d)
Plum Pudding Model
10.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
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