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Atomic Theory Review Flashcards | StudBud
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Atomic Theory Review
Atomic Theory Review
25 terms
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Chemistry, Atomic Theory, History
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Who said that electrons exist in various shaped electron "clouds" called atomic orbitals?
Ernest Rutherford
Erwin Schrödinger
J. J. Thomson
Niels Bohr
2
What are the letters representing the sublevels in the quantum mechanical model of the atom?
w, x, y, z
a, b, c, d
s, p, d, f
n, p, q, t
3
Who developed the plum pudding model of the atom?
John Dalton
Democritus
J. J. Thomson
Ernest Rutherford
4
Who first proposed that atoms combine to form compounds only in whole number ratios?
Democritus
Niels Bohr
John Dalton
J. J. Thomson
5
Who determined that all of the positive charge of an atom is in the dense center, or nucleus?
J. J. Thomson
Ernest Rutherford
John Dalton
Democritus
6
Who developed the planetary model of the atom?
Ernest Rutherford
John Dalton
Niels Bohr
Erwin Schrödinger
7
Which model of the atom is the most accurate, the one we use today?
Planetary model
Plum Pudding model
Billiard Ball model
Quantum Mechanical model
8
What is the biggest problem with Dalton's theory of the atom?
He did not have evidence to support his hypothesis
Atoms are not round, as he said they would be
Atoms are not indivisible, as he said they would be
Atoms do not have to combine in whole number ratios
9
Who discovered the electron?
Erwin Schrödinger
Niels Bohr
Ernest Rutherford
J. J. Thomson
10
Which subatomic particles take up most of the atom's space?
Electrons only
Protons, Neutrons
Neutrons only
Electrons, Protons
11
How large is the nucleus of an atom compared to the whole atom?
Nucleus is a blueberry, atom is a grapefruit
Nucleus is a marble, atom is a basketball
Nucleus is a marble, atom is a football stadium
Nucleus is a blueberry, atom is the earth
12
The word "atom" comes from the Greek "atomos," which means __________
Unbreakable
Invisible
Matter
Tiny particle
13
Who developed the billiard ball model of the atom?
John Dalton
Democritus
J. J. Thomson
Erwin Schrödinger
14
Who developed the quantum mechanical model?
Erwin Schrödinger
Niels Bohr
J. J. Thomson
John Dalton
15
What was wrong with Bohr's atomic theory?
Electrons can exist anywhere, he said they couldn't
Atoms need a specific quantum of energy to change levels
Positive charges, protons, are in the nucleus of the atom
Atoms don't have perfectly circular orbits, he said they did
16
Which subatomic particles have electrical charges?
None of them have electrical charges
Protons, Neutrons
Neutrons, Electrons
Protons, Electrons
17
Who developed the nuclear model of the atom?
Erwin Schrödinger
J. J. Thomson
Niels Bohr
Ernest Rutherford
18
Who conducted the gold foil experiment?
J. J. Thomson
Niels Bohr
Ernest Rutherford
John Dalton
19
Which subatomic particles give an atom its mass?
Neutrons, Electrons
Electrons
Protons
Protons, Neutrons
20
What is the most correct description of where electrons are located in an atom?
Outside the nucleus in atomic orbitals
Embedded in a solid sphere of positive charge
Outside the nucleus in circular orbits
Somewhere outside the nucleus
21
Who first proposed the idea of the atom?
J. J. Thomson
Democritus
John Dalton
Niels Bohr
22
What did the plum pudding model say about the atom?
Atoms are positive spheres with small negative charges
Atoms are gooey
Atoms are very tasty, like plum pudding
Atoms are negative spheres with small positive charges
23
What about the cathode ray tube experiment indicated that electrons are negative?
Cathode rays shocked you when you touched them
Positive plates repel the rays, negative plates attract them
Negative plates repel the rays, positive plates attract them
24
Why did scientists conclude that all mass and positive charge in an atom are in the nucleus?
Atoms are neutral, so they must have positives and negatives
Some positive alpha particles bounced back off of gold atoms
Cathode rays bent towards positive plates
Pictures of atoms showed protons, neutrons, and electrons
25
Who first said that electrons can only exist certain distances from the nucleus?
J. J. Thomson
Niels Bohr
Ernest Rutherford
Erwin Schrödinger
