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Atomic Theory/Structure/Waves Review Flashcards | StudBud
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Atomic Theory/Structure/Waves Review
Atomic Theory/Structure/Waves Review
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Review: Atomic Theory/Structure/Waves
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Which scientist said that atoms can not be broken down?
Thomson
Dalton
Rutherford
Bohr
2
If two elements have the same # of protons, but different amounts of neutrons, they are called...
Eons
Isotopes
Ions
Oxidation #s
3
What is the amount of energy in a photon that has a frequency of 2.31x10
10
?
1.2x10-2 J
2.31x1018 J
2.87x10-44 J
1.53x10-23 J
4
What atom does the diagram below represent?
Magnesium
Oxygen
Sulfuf
Sodium
5
How many neutrons are represented in the nuclear symbol shown below?
Can't answer
14
8
6
6
Which letter shows the wave with the highest frequency?
b
c
d
a
7
How many electrons are in a neutral atom of Magnesium?
9
12
24
14
8
How many valence electrons does aluminum have?
10
13
3
8
9
What is the oxidation number of beryllium?
+2
-2
+1
+3
10
Which diagram shows an electron losing energy?
A and B
B
Neither
A
11
Light is emitted when....
Electrons absorb energy
Protons emit energy and move to a lower state
Electron emit energy and move to a lower state
Electrons move to an excited state
12
What is the order of the electromagnetic spectrum from highest energy to the lowest energy?
microwave, radio, visible, ultraviolet, xray, gamma, infrared
gamma, xray, ultraviolet, visible, infrared, microwave, radio
infrared, gamma, xray, ultraviolet, visible, radio, microwave
radio, microwave, infrared, visible, ultraviolet, xray, gamma
13
Use the atomic emission spectrums to identify the unknown element.
Ne
H
neither
Hg
14
Chlorine exists as two isotopes. Calculate the atomic mass based on the information below.
34.97
35.97
36.97
35.45
15
Why are elements neutral?
equal number of electrons and neutrons
equal number of protons and neutrons
only has neutrons
equal number of electrons and protons
16
Which subatomic particle has a mass of 1 amu?
protons and neutrons
proton
electron
electrons and protons
17
Which subatomic particle identifies the element?
proton
electrons
ions
neutrons
18
What is the wavelength of a light with a frequency of 3.21x10
-5
m?
9.63x103 Hz
3.0X108 Hz
1.07x10-13 Hz
9.35x1012 Hz
19
Which scientist proposed the model shown below?
Chadwick
Bohr
Thomson
Rutherford
20
According to the modern atomic theory, which subatomic particles are located in the nucleus?
protons only
protons and neutrons
electrons and protons
neutrons and electrons
21
Which scientist stated that the atom had a positive nucleus?
Bohr
Chadwick
Thomson
Rutherford
22
Which subatomic particle was discovered using the cathode ray experiment?
Iom
Neutron
Proton
Electron
23
A photon emits a wave with an energy of 1.25x10
-15
J. What is the frequency of the photon?
1.59x10-10 m
8.28x10-49 m
2.4x1023 m
1.89x1018 m
24
Which subatomic particle has a charge of +1?
atom
neutron
electron
proton
25
Which scientist developed the model shown below?
Chadwick
Bohr
Rutherford
Thomson
