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Complete Test Bank Essentials of Radiographic Physics and Imaging 3rd Edition Johnston Questions & Answers with rationales (Chapter 1-17) $12.99   Add to cart

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Complete Test Bank Essentials of Radiographic Physics and Imaging 3rd Edition Johnston Questions & Answers with rationales (Chapter 1-17)

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Complete Test Bank Essentials of Radiographic Physics and Imaging 3rd Edition Johnston Questions & Answers with rationales (Chapter 1-17)

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,DOWNLOAD THE Test Bank for Essentials of Radiographic Physics and Imag
vi vi vi vi vi vi vi vi vi vi


ing 3rd Edition Johnston vi vi vi

Chapter 02: Structure of the Atom
vi vi vi vi vi


Johnston/Fauber: Essentials of Radiographic Physics and Imaging, 3rd Edition
vi vi vi vi vi vi vi vi




MULTIPLE CHOICE vi




1. The earliest atomic theory is generally associated with
vi vi vi vi vi vi vi


a. Bohr
b. Leucippus
c. Democritus
d. Dalton
ANS: B vivi


Although his theory was somewhat vague, Leucippus is most often the earliest person assoc
vi vi vi vi vi vi vi vi vi vi vi vi vi


iated with atomic theory. vi vi vi




2. The word atom is derived from the Greek word atomos, meaning
vi vi vi vi vi vi vi vi vi vi


a. nuclear
b. small
c. indivisible
d. invisible
ANS: C vivi


The Greek word atomos means ―indivisible.‖
vi vi vi vi vi




3. In the early 1800s English chemist John Dalton theorized that
vi vi vi vi vi vi vi vi vi


a. elements form compounds vi vi


b. atoms are unique to each element in size and mass
vi vi vi vi vi vi vi vi vi


c. a chemical reaction results from atoms being rearranged
vi vi vi vi vi vi vi


d. all of these vi vi




ANS: D vivi


As a result of his experiments, John Dalton theorized that elements form compounds, atoms
vi vi vi vi vi vi vi vi vi vi vi vi vi


are unique to each element in size and mass, and that a chemical reaction results from atom
vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi


s being rearranged.
vi vi




4. Discovery of the electron is attributed to vi vi vi vi vi vi


a. Dalton
b. Bohr
c. Thomson
d. Rutherford
ANS: C vivi


Joseph John ―J.J.‖ Thomson determined that the electron was a negatively charged part of t
vi vi vi vi vi vi vi vi vi vi vi vi vi vi


he atom. vi




5. The ―plum pudding model‖ is associated with
vi vi vi vi vi vi


a. Bohr
b. Rutherford
c. Dalton
d. Thomson



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,DOWNLOAD THE Test Bank for Essentials of Radiographic Physics and Imag
vi vi vi vi vi vi vi vi vi vi


ing 3rd Edition Johnston vi vi vi



ANS: D vivi


Based on the physical arrangement of raisins in a plum pudding, Thomson described the ato
vi vi vi vi vi vi vi vi vi vi vi vi vi vi


m and surrounding negatively charged particles (electrons).
vi vi vi vi vi vi




6. The earliest atomic theory based on an arrangement similar to the solar system is attributed
vi vi vi vi vi vi vi vi vi vi vi vi vi vi v


to i


a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: B vivi


Rutherford developed the theory that the atom consisted of a very dense nucleus with small electro
vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi


ns rotating around, similar to the sun and planets.
vi vi vi vi vi vi vi vi




7. The most commonly known modern atomic theory was developed by
vi vi vi vi vi vi vi vi vi


a. Bohr
b. Rutherford
c. Dalton
d. Thomson
ANS: A vivi


Niels Bohr refined Rutherford’s atomic theory, based on the solar system, into the most co
vi vi vi vi vi vi vi vi vi vi vi vi vi vi


mmonly known atomic theory today.
vi vi vi vi




8. The three fundamental particles of the atom are the
vi vi vi vi vi vi vi vi


a. element, nucleus, and electron vi vi vi


b. electron, nucleus, and proton vi vi vi


c. neutron, electron, and proton vi vi vi


d. nucleus, proton, and neutron vi vi vi




ANS: C vivi


The three fundamental components of the atom are the proton, electron, and neutron.
vi vi vi vi vi vi vi vi vi vi vi vi




9. The atomic nucleus contains
vi vi vi


a. protons and neutrons vi vi


b. protons and electrons vi vi


c. electrons and neutrons vi vi


d. all of these vi vi




ANS: A vivi


The atomic nucleus contains varying amounts of protons and neutrons, depending on the ele
vi vi vi vi vi vi vi vi vi vi vi vi vi


ment.

10. The component of the nucleus that has a positive charge and mass is the
vi vi vi vi vi vi vi vi vi vi vi vi vi


a. electron
b. neutron
c. proton
d. none of these vi vi v




ANS: C
i v i




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, DOWNLOAD THE Test Bank for Essentials of Radiographic Physics and Imag
vi vi vi vi vi vi vi vi vi vi


ing 3rd Edition Johnston vi vi vi

The proton is the part of the nucleus that has a positive charge and mass.
vi vi vi vi vi vi vi vi vi vi vi vi vi vi




11. The component of the nucleus that has mass but no electrical charge is the
vi vi vi vi vi vi vi vi vi vi vi vi vi


a. electron
b. neutron
c. proton
d. none of these vi vi




ANS: B vivi


The neutron is found in the nucleus; it is very similar to the proton but has no electrical char
vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi


ge (neutral).
vi




12. The fundamental component of the atom that has the smallest mass is the
vi vi vi vi vi vi vi vi vi vi vi vi


a. electron
b. neutron
c. proton
d. none of these vi vi




ANS: A vivi


The electron has significantly less mass than the neutron or proton.
vi vi vi vi vi vi vi vi vi vi




13. The mass of an atom is primarily due to the mass of the
vi vi vi vi vi vi vi vi vi vi vi vi


a. neutrons
b. nucleus
c. electrons
d. protons
ANS: B vivi


The nucleus, consisting of both protons and neutrons, accounts for the majority of the mass
vi vi vi vi vi vi vi vi vi vi vi vi vi vi vi


of an atom.
vi vi




14. If an atom has more protons than electrons, it will
vi vi vi vi vi vi vi vi vi


a. have a negative charge vi vi vi


b. have a positive charge vi vi vi


c. be electrically neutral vi vi


d. have neither a positive nor negative charge
vi vi vi vi vi vi




ANS: B vivi


An atom with more protons than electrons will have a positive charge.
vi vi vi vi vi vi vi vi vi vi vi




15. If an atom has more electrons than protons, it will
vi vi vi vi vi vi vi vi vi


a. have a negative charge vi vi vi


b. have a positive charge vi vi vi


c. be electrically neutral vi vi


d. have neither a positive nor negative charge
vi vi vi vi vi vi




ANS: A vivi


An atom with more electrons than protons will have a negative charge.
vi vi vi vi vi vi vi vi vi vi vi




16. If an atom has the same number of electrons and protons it will
vi vi vi vi vi vi vi vi vi vi vi vi


a. have a negative charge vi vi vi




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