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WorksheetsPer. 7 Quiz #3: The Atom
Total questions: 12
Worksheet time: 3hrs 0mins
Name
Class
Date
1.
Which scientist developed the "Plum Pudding Model", to represent an atom?
a)
John Dalton
b)
J. J. Thomson
c)
Ernest Rutherford
2.
Which scientist's atomic model are we using today, to represent atoms?
a)
Democritus
b)
J. J. Thomson
c)
Niels Bohr
3.
Which scientist discovered electron clouds?
a)
Niels Bohr
b)
Ernest Rutherford
c)
Democritus
4.
What is located in the center of an atom?
a)
Electron Clouds
b)
Electrons
c)
The Nucleus
5.
What are three subatomic particles?
a)
The nucleus, electron clouds, electron orbitals.
b)
The nucleus, protons, and electrons clouds.
c)
Protons, neutrons, and electrons.
6.
Which subatomic particles are located in the nucleus?
a)
Protons, neutrons, and electrons.
b)
Protons and neutrons.
c)
Electrons and protons.
7.
Which subatomic particle has a negative charge?
a)
Protons
b)
Neutrons
c)
Electrons
8.
Which particle has a neutral charge?
a)
Neutron
b)
Proton
c)
Electron
9.
When an atom gains or loses (+ or - ) a proton, what is the result?
a)
It becomes a molecule
b)
It becomes an ion
c)
It becomes a new element
10.
When an atom gains or loses (+ or -) an electron, what is the result?
a)
It becomes a new element
b)
It becomes a molecule.
c)
It become an ion
11.
What does the atomic number tell us about an atom?
a)
The number of neutrons in the nucleus.
b)
The number of protons in an atom.
c)
The number of electrons in the electrons cloud.
12.
What does the atomic mass number tell us about an atom?
a)
The number of protons and neutrons in the nucleus.
b)
The number of protons and electrons in the nucleus.
c)
The number of electrons in the electron clouds.
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