Question 1

Identify the radioactive green light that glows in the dark.

Accepted Answer

A) phenolphthalein 
B) radioactivity 
C) phosphorescence 
D) desensitivity 
E) neon 
A) phenolphthalein 
B) radioactivity 
C) phosphorescence 
D) desensitivity 
E) neon

Question 2

Complete the following equation of nuclear fusion. 
$\begin{array} { l } 
2 \
1
\end{array}$ H + $\begin{array} { l } 
3 \
1
\end{array}$ H ? 4
2 He + ________

Accepted Answer

A)  $\begin{array} { c } 
0 \
+ 1
\end{array}$ e 
B)  $\begin{array} { l } 
0 \
0 \
\end{array}$ g 
C)  ${ } _ { - 1 } ^ { 0 } \mathrm { e }$ 
D)  ${ } _ { 1 } ^ { 1 } \mathrm { H }$ 
E)  ${ } _ { 0 } ^ { 1 } n$ 
A)  $\begin{array} { c } 
0 \
+ 1
\end{array}$ e 
B)  $\begin{array} { l } 
0 \
0 \
\end{array}$ g 
C)  ${ } _ { - 1 } ^ { 0 } \mathrm { e }$ 
D)  ${ } _ { 1 } ^ { 1 } \mathrm { H }$ 
E)  ${ } _ { 0 } ^ { 1 } n$

Question 3

Describe what changes occur in the atomic nucleus during beta decay.

Accepted Answer

A) The mass number and atomic number decrease. 
B) The mass number and atomic number increase. 
C) The mass number is unchanged and the atomic number decreases. 
D) The mass number is unchanged and the atomic number increases. 
E) The mass number and atomic number do not change. 
A) The mass number and atomic number decrease. 
B) The mass number and atomic number increase. 
C) The mass number is unchanged and the atomic number decreases. 
D) The mass number is unchanged and the atomic number increases. 
E) The mass number and atomic number do not change.

Question 4

Define radioactivity.

Accepted Answer

Radioactivity is the emission

Question 5

Describe what changes occur in the atomic nucleus during electron capture.

Accepted Answer

A) The mass number and atomic number decrease. 
B) The mass number and atomic number increase. 
C) The mass number is unchanged and the atomic number decreases. 
D) The mass number is unchanged and the atomic number increases. 
E) The mass number and atomic number do not change. 
A) The mass number and atomic number decrease. 
B) The mass number and atomic number increase. 
C) The mass number is unchanged and the atomic number decreases. 
D) The mass number is unchanged and the atomic number increases. 
E) The mass number and atomic number do not change.

Question 6

Find a correct technique used in radiometric dating.

Accepted Answer

A) uranium-238 to bismuth-206 
B) potassium-40 to argon-40 
C) carbon-14 to nitrogen-11 
D) lead-206 to uranium-238 
E) calcium-41 to argon-42 
A) uranium-238 to bismuth-206 
B) potassium-40 to argon-40 
C) carbon-14 to nitrogen-11 
D) lead-206 to uranium-238 
E) calcium-41 to argon-42

Question 7

If we start with 1.000 g of strontium-90,0.8444 g will remain after 7.00 y.This means that the $\text { half-life }$ of strontium-90 is ________ y.

Accepted Answer

A) 5.91 
B) 8.29 
C) 23.7 
D) 4.10 
E) 28.7 
A) 5.91 
B) 8.29 
C) 23.7 
D) 4.10 
E) 28.7

Question 8

Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.

Accepted Answer

A) 277 hours 
B) 455 hour 
C) 561 hours 
D) 639 hours 
E) 748 hours 
A) 277 hours 
B) 455 hour 
C) 561 hours 
D) 639 hours 
E) 748 hours

Question 9

Determine the binding energy of an O-16 nucleus.The O-16 nucleus has a mass of 15.9905 amu.A proton has a mass of 1.00728 amu,a neutron has a mass of 1.008665 amu,and 1 amu is equivalent to 931 MeV of energy.

Accepted Answer

A) 8.84 MeV 
B) 128 MeV 
C) 138 MeV 
D) 78.1 MeV 
E) 38.2 MeV 
A) 8.84 MeV 
B) 128 MeV 
C) 138 MeV 
D) 78.1 MeV 
E) 38.2 MeV

Question 10

Beta decay of 60Co produces a beta particle and

Accepted Answer

A) (56Mn) 
B) (59Co) 
C) (60Fe) 
D) (60Ni) 
A) (56Mn) 
B) (59Co) 
C) (60Fe) 
D) (60Ni)

Question 11

Which of the following nuclides are most likely to decay via positron emission?

Accepted Answer

A) Na-26 
B) I-121 
C) Ca-42 
D) S-30 
E) Sb-122 
A) Na-26 
B) I-121 
C) Ca-42 
D) S-30 
E) Sb-122

Question 12

What is the unit for the measure of an absorbed dose of radiation and what is its SI definition?

Accepted Answer

A) watt,1W = 1 J/1 sec 
B) joule,1 J = (mv2)/2 
C) becquerel,1 Bq = (number of decay events)/time 
D) sievert,1 Sv = 1 J/(kg of body tissue) 
E) gray,1 Gy = 1 J/(kg of body tissue) 
A) watt,1W = 1 J/1 sec 
B) joule,1 J = (mv2)/2 
C) becquerel,1 Bq = (number of decay events)/time 
D) sievert,1 Sv = 1 J/(kg of body tissue) 
E) gray,1 Gy = 1 J/(kg of body tissue)

Question 13

A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00.Assuming there was no Pb-206 present when the sample was formed,how old is it? The half-life of U-238 is 4.5 × 109 years.

Accepted Answer

A) 7.3 × 1011 years 
B) 1.4 × 1010 years 
C) 2.4 × 1010 years 
D) 2.1 × 109 years 
E) 7.1 × 109 years 
A) 7.3 × 1011 years 
B) 1.4 × 1010 years 
C) 2.4 × 1010 years 
D) 2.1 × 109 years 
E) 7.1 × 109 years

Question 14

Which radiation has the highest penetrating power?

Accepted Answer

A) alpha rays 
B) beta rays 
C) gamma rays 
D) positron emission 
E) electron capture 
A) alpha rays 
B) beta rays 
C) gamma rays 
D) positron emission 
E) electron capture

Question 15

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)

Accepted Answer

A) 99 minutes 
B) 1.7 × 102 minutes 
C) 1.3 × 102 minutes 
D) 3.0 × 102 minutes 
E) 2.1 × 102 minutes 
A) 99 minutes 
B) 1.7 × 102 minutes 
C) 1.3 × 102 minutes 
D) 3.0 × 102 minutes 
E) 2.1 × 102 minutes

Question 16

Identify the instrument used to detect radiation.

Accepted Answer

A) cathode ray tube 
B) Geiger counter 
C) oscillation counter 
D) X-ray tube 
E) nuclear magnetic resonance instruments 
A) cathode ray tube 
B) Geiger counter 
C) oscillation counter 
D) X-ray tube 
E) nuclear magnetic resonance instruments

Question 17

Determine the identity of the daughter nuclide from the positron emission of $ { }_{8}^{15} \mathrm{O} $

Accepted Answer

A)  $\begin{array} { c } 
15 \
6
\end{array}$ C 
B)  $\begin{array} { c } 
16 \
9
\end{array}$ F 
C)  $\begin{array} { c } 
15 \
7
\end{array}$ N 
D)  $$14$$
7 N 
E)  11
6 C 
A)  $\begin{array} { c } 
15 \
6
\end{array}$ C 
B)  $\begin{array} { c } 
16 \
9
\end{array}$ F 
C)  $\begin{array} { c } 
15 \
7
\end{array}$ N 
D)  $$14$$
7 N 
E)  11
6 C

Question 18

Determine the identity of the daughter nuclide from the positron emission of $ { }_{32}^{68} \mathrm{Ge} $

Accepted Answer

A)  $\begin{array} { l } 
67 \
31
\end{array}$ Ga 
B)  69
33 As 
C)  64
30 Zn 
D)  $\begin{array} { l } 
68 \
33
\end{array}$ As 
E)  $\begin{array} { l } 
68 \
31
\end{array}$ Ga 
A)  $\begin{array} { l } 
67 \
31
\end{array}$ Ga 
B)  69
33 As 
C)  64
30 Zn 
D)  $\begin{array} { l } 
68 \
33
\end{array}$ As 
E)  $\begin{array} { l } 
68 \
31
\end{array}$ Ga

Question 19

Which of the following nuclides are most likely to decay via beta decay?

Accepted Answer

A) I-126 
B) Al-24 
C) N-13 
D) Cs-137 
E) Na-20 
A) I-126 
B) Al-24 
C) N-13 
D) Cs-137 
E) Na-20

Question 20

Identify the missing particle in the following nuclear equation: 
228
90 Th ? 4
2 He + ?

Accepted Answer

A)  $\begin{array} { c } 
232 \
92
\end{array}$ U 
B)  232
89 Ac 
C)  228
89 Ac 
D)  $\begin{array} { c } 
228 \
88
\end{array}$ Ra 
E)  224
88 Ra 
A)  $\begin{array} { c } 
232 \
92
\end{array}$ U 
B)  232
89 Ac 
C)  228
89 Ac 
D)  $\begin{array} { c } 
228 \
88
\end{array}$ Ra 
E)  224
88 Ra

Exam 19: Radioactivity and Nuclear Chemistry

Identify the radioactive green light that glows in the dark.

Complete the following equation of nuclear fusion. 2 1 H + 3 1 H ? 4 2 He + ________

Describe what changes occur in the atomic nucleus during beta decay.

Define radioactivity.

Describe what changes occur in the atomic nucleus during electron capture.

Find a correct technique used in radiometric dating.

If we start with 1.000 g of strontium-90,0.8444 g will remain after 7.00 y.This means that the half-life \text { half-life } half-life of strontium-90 is ________ y.

Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.

Determine the binding energy of an O-16 nucleus.The O-16 nucleus has a mass of 15.9905 amu.A proton has a mass of 1.00728 amu,a neutron has a mass of 1.008665 amu,and 1 amu is equivalent to 931 MeV of energy.

Beta decay of 60Co produces a beta particle and

Which of the following nuclides are most likely to decay via positron emission?

What is the unit for the measure of an absorbed dose of radiation and what is its SI definition?

A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00.Assuming there was no Pb-206 present when the sample was formed,how old is it? The half-life of U-238 is 4.5 × 109 years.

Which radiation has the highest penetrating power?

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)

Identify the instrument used to detect radiation.

Determine the identity of the daughter nuclide from the positron emission of 815O { }_{8}^{15} \mathrm{O} 815​O

Determine the identity of the daughter nuclide from the positron emission of 3268Ge { }_{32}^{68} \mathrm{Ge} 3268​Ge

Which of the following nuclides are most likely to decay via beta decay?

Identify the missing particle in the following nuclear equation: 228 90 Th ? 4 2 He + ?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

If we start with 1.000 g of strontium-90,0.8444 g will remain after 7.00 y.This means that the $\text { half-life }$ of strontium-90 is ________ y.

Beta decay of ⁶⁰Co produces a beta particle and

A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00.Assuming there was no Pb-206 present when the sample was formed,how old is it? The half-life of U-238 is 4.5 × 10⁹ years.

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 10² minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)

Determine the identity of the daughter nuclide from the positron emission of ${ }_{8}^{15} \mathrm{O}$

Determine the identity of the daughter nuclide from the positron emission of ${ }_{32}^{68} \mathrm{Ge}$