Name: ________________________
Chapter 7--Reading Quiz--PHYS 151--S16
1. The atomic number of an element gives the number
of _.
a. neutrons
b. nucleons
c. electrons
d. protons
e. neutrinos
2. Which of these statements about the strong nuclear
force (SNF) are true:
I. The SNF acts over very large distances.
II. The SNF usually acts to hold electrons in their
orbital shells.
III. The SNF is much weaker than the electric
force.
a. I
b. II
c. III
d. II & III
e. none of these are true
3. Which of these is the proper atomic notation for
carbon-12?
a. 66 C
b.
c.
d.
12
6
12
12
6
6. In which of these processes of nuclear decay is the
daughter nucleus still the same element at the
parent nucleus?
a. gamma
b. alpha
c. beta-plus
d. electron capture
e. beta-minus
7. In electron capture, what happens in the nucleus?
a. an electron is emitted by the nucleus
b. the nucleus becomes negative
c. an electron combines with a proton to form a
neutron
d. the nucleus emits a positron
8. Following are types of nuclear radiation. Which of
these are actually particles?
I. alpha
II. beta
III.gamma
a. I
b. I & II
c. II & III
d. all are particles
e. none are particles; they are all electromagnetic
radiation
9. Consider this isotope of carbon. How many
neutrons does it have?
22
C
6
a. 28
b. 22
c. 14
d. 6
e. 16
10. Which of these best desribes the shell model of the
atom
a. the energy of the nucleus is confined to
particular shells
b. the atom has protons and electrons that are
evenly distributed
c. electrons orbit around the nucleus
d. electrons are confined to discrete shells around
the nucleus
C
C
C
4. This nuclear decay equation represents what type
of decay?
242
Pu → 238
U + 42 He
94
92
a. beta-plus
b. electron capture
c. gamma
d. alpha
e. beta-minus
5. What should the value X be in this equation?
14
C → 147 U + X0 e + ν
6
a. 1
b. 0
c. -2
d. 2
e. -1
1
ID: A
Chapter 7--Reading Quiz--PHYS 151--S16
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
D
E
B
D
E
A
C
B
E
D
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
1
1
1
1
1
1
1
1
1
1
1