Download 02.01 Atomic Theory Schoology Part 3

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02.01 Atomic Theory | Schoology
Question 1
(02.01 MC)
What evidence from J.J. Thomson's experiments with the cathode ray led to the plum pudding model of the atom?
(3 points)
a. The beam was attracted to a positive charge and repelled by a negative charge, showing that atoms
contain small, negatively charged particles.
b. The beam was attracted to a negative charge and repelled by a positive charge, showing that atoms
contain small, positively charged particles.
c. The beam was positively charged and had significant mass, showing that atoms have a positive, dense
nucleus.
d. The beam was neutral and had significant mass, showing that atoms contain neutral particles in the
nucleus.
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Question 2
(02.01 LC)
Match the scientist to his contribution to the atomic theory. (3 points)
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1.
Rutherford
b.
Nucleus
2.
Bohr
a.
Electron energy levels
3.
Schrodinger
c.
Electron cloud and orbitals
Question 3
(02.01 LC)
What is true when an ion is formed? (3 points)
a. There is an unequal number of electrons and neutrons.
b. There is an unequal number of electrons and protons.
c. The atom loses one or more protons.
d. The atom loses one or more neutrons.
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Question 4
(02.01 LC)
What is true of electrons? (3 points)
a. They are positively charged and located inside the nucleus.
b. They are positively charged and located outside the nucleus.
c. They are negatively charged and located inside the nucleus.
d. They are negatively charged and located outside the nucleus.
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02.01 Atomic Theory | Schoology
Question 5
(02.01 MC)
In the 1800s, one of the statements in John Dalton's atomic theory was that atoms are indivisible. Later
experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. What
happened to the indivisible atom part of Dalton's atomic theory, and why? (3 points)
a. The entire theory was discarded because Dalton's scientific reputation was ruined once new evidence
invalidated part of his theory.
b. The indivisible atom part of the theory was discarded because consensus of data must exist for theories
to be valid.
c. The theory remained unchanged because Dalton was correct regarding all other statements within the
accepted scientific theory.
d. The theory remained unchanged because new data is discarded if it doesn't fit within the accepted theory.
Pending Review
Question 6
(02.01 MC)
Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why? (5 points)
The distribution of positive and negative particles isnt uniform.
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