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Imaging 2nd Edition Johnston
Chapter 02: Structure of the Atom
Johnston: Essentials of Radiographic Physics and Imaging, 2nd Edition
elstb.netlify.app MULTIPLE CHOICE
1. The earliest atomic theory is generally associated with
a. Bohr
b. Leucippus
PRINTED PDF | ORIGINAL DIRECTLY FROM THE PUBLISHER 100% c. Democritus
d. Dalton
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ANS: B
Although his theory was somewhat vague, Leucippus is most often the earliest person
associated with atomic theory.
AH
Second Edition
REF: 16 OBJ: 1
2. The word atom is derived from the Greek word atomos, meaning
a. nuclear
b. small
c. indivisible
Essentials of
d. invisible
ANS: C
The Greek word atomos means “indivisible.”
Radiographic REF: 16 OBJ: 1
Physics and Imaging 3. In the early 1800s English chemist John Dalton theorized that
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a. elements form compounds
b. atoms are unique to each element in size and mass
c. a chemical reaction results from atoms being rearranged
d. all of the above
ANS: D
MYNURSYTEST.STORE As a result of his experiments, John Dalton theorized that elements form compounds, atoms
are unique to each element in size and mass, and that a chemical reaction results from atoms
being rearranged.
REF: 16 OBJ: 1
4. Discovery of the electron is attributed to
a. Dalton
b. Bohr
James N. Johnston Terri L. Fauber c. Thomson
d. Rutherford
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ELSEVIER EVOLVE ELSEVIER.COM ANS: C
Joseph John “J.J.” Thomson determined that the electron was a negatively charged part of the
atom.
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