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Atomic Theory Review
Test Description: Review games for Atomic Theory exam for General chemistry
Instructions: Answer all questions to get your test result.
1) ____________ experiments provided the first evidence that atoms are made of smaller particles, called subatomic particles.
A
J.J. Thomson's
B
Ernest Rutherford's
C
John Dalton's
D
Neils Bohr's
2) The __________ is a dense, positively charged mass located near the center of the atom.
A
neucleus
B
proton
C
electron
D
neutron
3) A(n) __________ is the smallest subatomic particle, located outside of the nucleus.
A
neutron
B
proton
C
nucleus
D
electron
4) _____________ are subatomic particles located inside of the nucleus with the same mass.
A
electrons and neutrons
B
protons and electrons
C
protons and neutrons
5) The atomic number of an atom is equal to the number of ________ in the atom.
A
electrons
B
protons
C
neutrons
6) The mass number of an atom is equal to the number of ____________ in the atom.
A
protons and neutrons
B
electrons and neutrons
C
protons and electrons
7) Atoms of different elements can never have the same number of __________ in the nucleus
A
neutrons
B
protons
C
electrons
8) Isotopes are atoms of the same element that have different number of ____________
A
protons
B
electrons
C
neutrons
9) The number of neutrons is equal to the ____________________
A
atomic number + mass number
B
mass number x atomic number
C
mass number - atomic number
D
atomic number - mass number
10) What scientist discovered electrons by completing experiments with electricity in empty tubes?
A
John Dalton
B
Neils Bohr
C
Ernest Rutherford
D
J.J. Thomson
11) What experiment did Ernest Rutherford complete?
A
The Gold Foil Experiment
B
The Cathode Ray Tube Experiment
C
The Atomic Emission Spectrum
12) What did Ernest Rutherford discover in his experiment, and then add to the model of the atom?
A
electron energy levels
B
electrons
C
nucleus
D
neutrons
13) Protons have a charge of
A
0
B
+1
C
-1
14) Neutrons have a charge of
A
0
B
+1
C
-1
15) Electrons have a charge of
A
-1
B
+1
C
0
*select an answer for all questions
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