,DOWNLOADTHETestBankforEssentialsofRadiographicPhysicsandImag ing 3r
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d Edition Johnston rq rq
Chapter 02: Structure of the Atom
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Johnston/Fauber: Essentials of Radiographic Physics and Imaging, 3rd Edition rq rq rq rq rq rq rq rq
MULTIPLE CHOICE rq
1. The earliest atomic theory is generally associated with
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a. Bohr
b. Leucippus
c. Democritus
d. Dalton
ANS: B r q r q
Although his theory was somewhat vague, Leucippus is most often the earliest person associ at
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ed with atomic theory.
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2. The word atom is derived from the Greek word atomos, meaning
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a. nuclear
b. small
c. indivisible
d. invisible
ANS: C r q r q
The Greek word atomos means “indivisible.”
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3. Inthe early 1800s English chemist John Dalton theorized that
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a. elements formcompounds rq rq
b. atoms are unique to each element in size and mass rq rq rq rq rq rq rq rq rq
c. a chemical reaction results from atoms being rearranged
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d. all of these ai rq
ANS: D r q r q
As a result of his experiments, John Dalton theorized that elements form compounds, atoms ar
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e unique to each element in size and mass, and that a chemical reaction results from atoms bein
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g rearranged.
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4. Discoveryof the electron is attributed to rq rq airq airq rq rq
a. Dalton
b. Bohr
c. Thomson
d. Rutherford
ANS: C r q r q
Joseph John “J.J.” Thomson determined that the electron was a negatively charged part of th e
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atom.
5. The “plum pudding model” is associated with
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
mynursytest.stor
,DOWNLOADTHETestBankforEssentialsofRadiographicPhysicsandImag ing 3r
q
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d Edition Johnston rq rq
ANS: D r q r q
Based on the physical arrangementof raisins in a plum pudding, Thomson described the ato m
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and surrounding negatively charged particles (electrons).
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6. The earliest atomic theorybased on an arrangement similar to the solar system is attributed t o
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: B r q r q
Rutherford developed the theory that the atom consisted of a verydense nucleus withsmall electro ns ro
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tating around, similar to the sun and planets.
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7. The mostcommonlyknown modern atomic theory was developed by
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: A r q r q
Niels Bohr refined Rutherford’s atomic theory, based on the solar system, into the most com mo
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nly known atomic theory today.
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8. The three fundamental particles of the atom are the
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a. element, nucleus, and electron rq rq rq
b. electron, nucleus, and proton rq rq rq
c. neutron, electron, and proton rq rq rq
d. nucleus, proton, and neutron rq rq rq
ANS: C r q r q
The three fundamental components of the atom are the proton, electron, and neutron.
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9. The atomic nucleus contains
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a. protons and neutrons rq rq
b. protons and electrons rq rq
c. electronsand neutrons rq rq
d. all of these ai rq
ANS: A r q r q
The atomic nucleus contains varying amounts of protons and neutrons, depending on the ele
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ment.
10. The component of the nucleus that has a positive charge and mass is the
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a. electron
b. neutron
c. proton
d. noneof these ai
ANS: C
rq r q
mynursytest.stor
, DOWNLOADTHETestBankforEssentialsofRadiographicPhysicsandImag ing 3r
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d Edition Johnston rq rq
The proton is the part of the nucleus that has a positive charge and mass.
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11. The component of the nucleus that has mass but no electrical charge is the
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a. electron
b. neutron
c. proton
d. none ofthese rq
ANS: B r q r q
The neutron is found in the nucleus; it is very similar to the protonbut has no electrical char ge (n
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eutral).
12. The fundamentalcomponent of the atom that has the smallest mass is the
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a. electron
b. neutron
c. proton
d. none of these rq ai
ANS: A r q r q
The electron has significantly less mass than the neutron or proton.
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13. The mass of an atom is primarily due to the mass of the
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a. neutrons
b. nucleus
c. electrons
d. protons
ANS: B r q r q
The nucleus, consisting of bothprotons and neutrons, accounts for the majorityof the mass ofan
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atom.
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14. Ifan atom has more protons thanelectrons, it will
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a. have a negative charge rq rq rq
b. have a positive charge rq rq rq
c. be electrically neutral rq rq
d. have neither a positive nor negative charge
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ANS: B r q r q
An atom with more protons than electrons will have a positive charge.
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15. If an atom has more electrons than protons, it will
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a. have a negative charge rq rq rq
b. have a positive charge rq rq rq
c. be electrically neutral rq rq
d. have neither a positive nor negative charge
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ANS: A r q r q
An atom with more electrons than protons will have a negative charge.
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16. Ifan atom has the same number ofelectrons and protons it will
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a. have a negative charge rq rq rq
mynursytest.stor
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d Edition Johnston rq rq
Chapter 02: Structure of the Atom
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Johnston/Fauber: Essentials of Radiographic Physics and Imaging, 3rd Edition rq rq rq rq rq rq rq rq
MULTIPLE CHOICE rq
1. The earliest atomic theory is generally associated with
rq ai rq rq rq rq rq
a. Bohr
b. Leucippus
c. Democritus
d. Dalton
ANS: B r q r q
Although his theory was somewhat vague, Leucippus is most often the earliest person associ at
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ed with atomic theory.
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2. The word atom is derived from the Greek word atomos, meaning
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a. nuclear
b. small
c. indivisible
d. invisible
ANS: C r q r q
The Greek word atomos means “indivisible.”
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3. Inthe early 1800s English chemist John Dalton theorized that
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a. elements formcompounds rq rq
b. atoms are unique to each element in size and mass rq rq rq rq rq rq rq rq rq
c. a chemical reaction results from atoms being rearranged
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d. all of these ai rq
ANS: D r q r q
As a result of his experiments, John Dalton theorized that elements form compounds, atoms ar
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e unique to each element in size and mass, and that a chemical reaction results from atoms bein
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g rearranged.
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4. Discoveryof the electron is attributed to rq rq airq airq rq rq
a. Dalton
b. Bohr
c. Thomson
d. Rutherford
ANS: C r q r q
Joseph John “J.J.” Thomson determined that the electron was a negatively charged part of th e
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atom.
5. The “plum pudding model” is associated with
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
mynursytest.stor
,DOWNLOADTHETestBankforEssentialsofRadiographicPhysicsandImag ing 3r
q
r q
r q
r q
r q
r q
r q
r q
r q
r q
r rq rq
d Edition Johnston rq rq
ANS: D r q r q
Based on the physical arrangementof raisins in a plum pudding, Thomson described the ato m
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and surrounding negatively charged particles (electrons).
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6. The earliest atomic theorybased on an arrangement similar to the solar system is attributed t o
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: B r q r q
Rutherford developed the theory that the atom consisted of a verydense nucleus withsmall electro ns ro
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tating around, similar to the sun and planets.
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7. The mostcommonlyknown modern atomic theory was developed by
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a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: A r q r q
Niels Bohr refined Rutherford’s atomic theory, based on the solar system, into the most com mo
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nly known atomic theory today.
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8. The three fundamental particles of the atom are the
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a. element, nucleus, and electron rq rq rq
b. electron, nucleus, and proton rq rq rq
c. neutron, electron, and proton rq rq rq
d. nucleus, proton, and neutron rq rq rq
ANS: C r q r q
The three fundamental components of the atom are the proton, electron, and neutron.
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9. The atomic nucleus contains
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a. protons and neutrons rq rq
b. protons and electrons rq rq
c. electronsand neutrons rq rq
d. all of these ai rq
ANS: A r q r q
The atomic nucleus contains varying amounts of protons and neutrons, depending on the ele
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ment.
10. The component of the nucleus that has a positive charge and mass is the
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a. electron
b. neutron
c. proton
d. noneof these ai
ANS: C
rq r q
mynursytest.stor
, DOWNLOADTHETestBankforEssentialsofRadiographicPhysicsandImag ing 3r
q
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r q
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d Edition Johnston rq rq
The proton is the part of the nucleus that has a positive charge and mass.
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11. The component of the nucleus that has mass but no electrical charge is the
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a. electron
b. neutron
c. proton
d. none ofthese rq
ANS: B r q r q
The neutron is found in the nucleus; it is very similar to the protonbut has no electrical char ge (n
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eutral).
12. The fundamentalcomponent of the atom that has the smallest mass is the
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a. electron
b. neutron
c. proton
d. none of these rq ai
ANS: A r q r q
The electron has significantly less mass than the neutron or proton.
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13. The mass of an atom is primarily due to the mass of the
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a. neutrons
b. nucleus
c. electrons
d. protons
ANS: B r q r q
The nucleus, consisting of bothprotons and neutrons, accounts for the majorityof the mass ofan
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atom.
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14. Ifan atom has more protons thanelectrons, it will
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a. have a negative charge rq rq rq
b. have a positive charge rq rq rq
c. be electrically neutral rq rq
d. have neither a positive nor negative charge
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ANS: B r q r q
An atom with more protons than electrons will have a positive charge.
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15. If an atom has more electrons than protons, it will
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a. have a negative charge rq rq rq
b. have a positive charge rq rq rq
c. be electrically neutral rq rq
d. have neither a positive nor negative charge
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ANS: A r q r q
An atom with more electrons than protons will have a negative charge.
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16. Ifan atom has the same number ofelectrons and protons it will
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a. have a negative charge rq rq rq
mynursytest.stor
