, LATEST CHEMISTRY INTRODUCTORY CONCEPTS f f f
AND CRITICAL THINKING QUESTIONS AND
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ANSWERS LATEST 2022/2023 BY CORWIN
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Introductory Chemistry: Concepts and Critical Thinking
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Chapter 4 Models of the Atom Key
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f Terms
1) What is the term for the weighted average mass of all the naturally occurring isotopes of an element?
f f f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number f
E) none of the above
f f f
Answer: C
f f
Section: Key Terms f f
2) What is the term for a unit of mass exactly equal to 1/12 the mass of a carbon-12 atom?
f f f f f f f f f f f f f f f f f f
A) atomic mass unit f f
B) hydrogen atom f
C) neutron
D) proton
E) none of the above
f f f
Answer: A
f f
Section: Key Terms f f
3) What is the term for a symbolic method of expressing the composition of an atomic nucleus?
f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms f f
4) What is the term for the region of very high density in the center of the atom?
f f f f f f f f f f f f f f f f
A) atomic center f
B) atomic core f
C) atomic kernel f
D) atomic nucleus f
,E) none of the above
f f f
Answer: D
f f
Section: Key Terms
f f
5) What is the term for the value which indicates the number of protons for an atom of a given element?
f f f f f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number
f
E) none of the above
f f f
Answer: B
f f
Section: Key Terms
f f
6) What is the term for the atomic model that describes electrons circling the nucleus in an orbit of
f f f f f f f f f f f f f f f f f
specific energy?
f f
A) Bohr atomf
B) Rutherford atom f
C) Thomson atom f
D) quantum mechanical atom f f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
7) What is the term for a broad uninterrupted band of radiant energy?
f f f f f f f f f f f
A) continuous spectrum f
B) radiant energy spectrum
f f
C) ultraviolet spectrum f
D) visible spectrum f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
8) What is the negatively charged subatomic particle having a negligible mass?
f f f f f f f f f f
A) electron
B) neutron
C) proton
D) quark
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
9) What is the term for the shorthand description of the arrangement of electrons by sublevels according to
f f f f f f f f f f f f f f f f
increasing energy?
f f
A) atomic notation f
B) atomic number f
C) continuous spectrum f
D) electron configuration f
, E) none of the abovef f f
Answer: D
f f
Section: Key Terms f f
10) What is the term for the collection of narrow bands of light that results from excited atoms of a
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given element releasing energy?
f f f f
A) continuous spectrum f
B) electromagnetic spectrum f
C) emission line spectrum f f
D) radiant energy spectrum f f
E) none of the abovef f f
Answer: C
f f
Section: Key Terms f f
11) What is the term for an orbit that electrons occupy at a fixed distance from the nucleus; designated 1,
f f f f f f f f f f f f f f f f f f
2, 3, 4 ...?
f f f f
A) energy level f
B) orbital
C) shell
D) subshell
E) none of the abovef f f
Answer: A
f f
Section: Key Terms f f
12) What is the term for an electron energy level that results from splitting a main energy level?
f f f f f f f f f f f f f f f f
A) energy sublevel f
B) orbital
C) shell
D) subshell
E) none of the abovef f f
Answer: A
f f
Section: Key Terms f f
13) What is the term for the number of times a light wave travels a complete cycle in one second?
f f f f f f f f f f f f f f f f f f
A) energy
B) frequency
C) velocity
D) wavelength
E) none of the abovef f f
Answer: B
f f
Section: Key Terms f f
14) What is the term for two atoms of the same element that differ by the number of neutrons in the
f f f f f f f f f f f f f f f f f f f
nucleus?
f
A) atomic mass units f f
B) isotopes
C) nucleons
AND CRITICAL THINKING QUESTIONS AND
f f f f f
ANSWERS LATEST 2022/2023 BY CORWIN
f f f f
Introductory Chemistry: Concepts and Critical Thinking
f f f f f
Chapter 4 Models of the Atom Key
f f f f f f
f Terms
1) What is the term for the weighted average mass of all the naturally occurring isotopes of an element?
f f f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number f
E) none of the above
f f f
Answer: C
f f
Section: Key Terms f f
2) What is the term for a unit of mass exactly equal to 1/12 the mass of a carbon-12 atom?
f f f f f f f f f f f f f f f f f f
A) atomic mass unit f f
B) hydrogen atom f
C) neutron
D) proton
E) none of the above
f f f
Answer: A
f f
Section: Key Terms f f
3) What is the term for a symbolic method of expressing the composition of an atomic nucleus?
f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms f f
4) What is the term for the region of very high density in the center of the atom?
f f f f f f f f f f f f f f f f
A) atomic center f
B) atomic core f
C) atomic kernel f
D) atomic nucleus f
,E) none of the above
f f f
Answer: D
f f
Section: Key Terms
f f
5) What is the term for the value which indicates the number of protons for an atom of a given element?
f f f f f f f f f f f f f f f f f f f
A) atomic notation f
B) atomic number f
C) atomic mass f
D) mass number
f
E) none of the above
f f f
Answer: B
f f
Section: Key Terms
f f
6) What is the term for the atomic model that describes electrons circling the nucleus in an orbit of
f f f f f f f f f f f f f f f f f
specific energy?
f f
A) Bohr atomf
B) Rutherford atom f
C) Thomson atom f
D) quantum mechanical atom f f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
7) What is the term for a broad uninterrupted band of radiant energy?
f f f f f f f f f f f
A) continuous spectrum f
B) radiant energy spectrum
f f
C) ultraviolet spectrum f
D) visible spectrum f
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
8) What is the negatively charged subatomic particle having a negligible mass?
f f f f f f f f f f
A) electron
B) neutron
C) proton
D) quark
E) none of the above
f f f
Answer: A
f f
Section: Key Terms
f f
9) What is the term for the shorthand description of the arrangement of electrons by sublevels according to
f f f f f f f f f f f f f f f f
increasing energy?
f f
A) atomic notation f
B) atomic number f
C) continuous spectrum f
D) electron configuration f
, E) none of the abovef f f
Answer: D
f f
Section: Key Terms f f
10) What is the term for the collection of narrow bands of light that results from excited atoms of a
f f f f f f f f f f f f f f f f f f
given element releasing energy?
f f f f
A) continuous spectrum f
B) electromagnetic spectrum f
C) emission line spectrum f f
D) radiant energy spectrum f f
E) none of the abovef f f
Answer: C
f f
Section: Key Terms f f
11) What is the term for an orbit that electrons occupy at a fixed distance from the nucleus; designated 1,
f f f f f f f f f f f f f f f f f f
2, 3, 4 ...?
f f f f
A) energy level f
B) orbital
C) shell
D) subshell
E) none of the abovef f f
Answer: A
f f
Section: Key Terms f f
12) What is the term for an electron energy level that results from splitting a main energy level?
f f f f f f f f f f f f f f f f
A) energy sublevel f
B) orbital
C) shell
D) subshell
E) none of the abovef f f
Answer: A
f f
Section: Key Terms f f
13) What is the term for the number of times a light wave travels a complete cycle in one second?
f f f f f f f f f f f f f f f f f f
A) energy
B) frequency
C) velocity
D) wavelength
E) none of the abovef f f
Answer: B
f f
Section: Key Terms f f
14) What is the term for two atoms of the same element that differ by the number of neutrons in the
f f f f f f f f f f f f f f f f f f f
nucleus?
f
A) atomic mass units f f
B) isotopes
C) nucleons
