Question 1

The mass of a decaying radioactive element must equal the mass of the two particles into which it decays.

Accepted Answer

A) True 
 B)False  True

Question 2

What are the two major roles of nuclear material in medicine?

Accepted Answer

A) Diagnosing diseases 
B) Determining bone disorders 
C) Treatment of tumors 
D) Both a and c 
A) Diagnosing diseases 
B) Determining bone disorders 
C) Treatment of tumors 
D) Both a and c D

Question 3

The fission of uranium in a nuclear power plant fuel rod releases three neutrons. What are they then used for?

Accepted Answer

A) Striking another uranium atom, propagating the fission 
B) Striking another uranium atom, mitigating the fission 
C) Striking another uranium atom, propagating the steam generation 
D) Striking another uranium atom, mitigating the steam generation 
A) Striking another uranium atom, propagating the fission 
B) Striking another uranium atom, mitigating the fission 
C) Striking another uranium atom, propagating the steam generation 
D) Striking another uranium atom, mitigating the steam generation A

Question 4

What can be used medically, when calcium needs to be studied?

Accepted Answer

A) Xenon-133 
B) Phosphous-31 
C) Strontium-87 
D) Potassium-42 
A) Xenon-133 
B) Phosphous-31 
C) Strontium-87 
D) Potassium-42

Question 5

What is critical mass?

Accepted Answer

A) The amount of ${ }_{92}^{235} \mathrm{U}$ needed to produce a chain reaction 
B) The amount of ${ }_{92}^{235} \mathrm{U}$ needed to harm a person who is exposed to it 
C) The amount of ${ }_{92}^{238} \mathrm{U}$ needed to produce a chain reaction 
D) The amount of ${ }_{92}^{238} \mathrm{U}$ needed to harm a person who is exposed to it 
A) The amount of ${ }_{92}^{235} \mathrm{U}$ needed to produce a chain reaction 
B) The amount of ${ }_{92}^{235} \mathrm{U}$ needed to harm a person who is exposed to it 
C) The amount of ${ }_{92}^{238} \mathrm{U}$ needed to produce a chain reaction 
D) The amount of ${ }_{92}^{238} \mathrm{U}$ needed to harm a person who is exposed to it

Question 6

How many homes in the United States does the Environmental Protection Agency estimate to have elevated radon levels?

Accepted Answer

A) 1 in 10 
B) 1 in 15 
C) 1 in 100 
D) None; we're all completely safe. 
A) 1 in 10 
B) 1 in 15 
C) 1 in 100 
D) None; we're all completely safe.

Question 7

Which isotope of uranium is usable for atomic weapons?

Accepted Answer

A)  ${ }_{92}^{238} \mathrm{U}$ 
B)  ${ }_{92}^{235} \mathrm{U}$ 
C)  ${ }_{92}^{234} \mathrm{U}$ 
D)  ${ }_{92}^{236} \mathrm{U}$ 
A)  ${ }_{92}^{238} \mathrm{U}$ 
B)  ${ }_{92}^{235} \mathrm{U}$ 
C)  ${ }_{92}^{234} \mathrm{U}$ 
D)  ${ }_{92}^{236} \mathrm{U}$

Question 8

Which isotope of uranium is enriched when the term "enriched uranium" is used?

Accepted Answer

A) 234-uranium 
B) 235-uranium 
C) 237-uranium 
D) 238-uranium 
A) 234-uranium 
B) 235-uranium 
C) 237-uranium 
D) 238-uranium

Question 9

If a 10-gram sample of a radioactive element has been stored for 1 week and 2 days, and now only 1.25 g of the element remains, what is its half-life?

Accepted Answer

A) 1 day 
B) 1 week 
C) 3 days 
D) 2 days 
A) 1 day 
B) 1 week 
C) 3 days 
D) 2 days

Question 10

Of what do the large, white, "smoky" plumes coming from a nuclear power plant consist?

Accepted Answer

The answer of Of what do the large, white, "smoky"...

Question 11

To what does the ionizing power of a radioactive particle refer?

Accepted Answer

A) Its ability to be ionized 
B) Its tendency to ionize spontaneously 
C) Its ability to ionize another molecule 
D) Its tendency to attract ions 
A) Its ability to be ionized 
B) Its tendency to ionize spontaneously 
C) Its ability to ionize another molecule 
D) Its tendency to attract ions

Question 12

Even though the United States makes up 5% of the world's population, how much of the world's energy resources does it consume?

Accepted Answer

A) 10% 
B) 20% 
C) 25% 
D) 50% 
A) 10% 
B) 20% 
C) 25% 
D) 50%

Question 13

What particle will balance the following: ${ }_{90}^{234} \mathrm{Th}$ ? ${ }_{91}^{234} \mathrm{~Pa}$ ?

Accepted Answer

A)  ${ }_{-1}^{0} \mathrm{e}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{1}^{1} \mathrm{H}$ 
D)  ${ }_{1}^{2} \mathrm{H}$ 
A)  ${ }_{-1}^{0} \mathrm{e}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{1}^{1} \mathrm{H}$ 
D)  ${ }_{1}^{2} \mathrm{H}$

Question 14

How can the following be balanced: ${ }_{94}^{244} \mathrm{Pu}$ ? ${ }_{95}^{244} \mathrm{Am}$ ?

Accepted Answer

A)  ${ }_{1}^{1} \mathrm{H}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{0}^{-1} \mathrm{e}$ 
D)  ${ }_{-1}^{0} \mathrm{e}$ 
A)  ${ }_{1}^{1} \mathrm{H}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{0}^{-1} \mathrm{e}$ 
D)  ${ }_{-1}^{0} \mathrm{e}$

Question 15

Elements that have no radioactive isotopes are referred to in what way?

Accepted Answer

A) As being radioactively dead 
B) As stable mineral sources 
C) As being in the belt of stability 
D) None of the above; there are no elements that have no radioactive isotopes. 
A) As being radioactively dead 
B) As stable mineral sources 
C) As being in the belt of stability 
D) None of the above; there are no elements that have no radioactive isotopes.

Question 16

What happens to a nucleus above the belt of stability that undergoes beta decay?

Accepted Answer

A) It shifts toward the stable region. 
B) It shifts away from the stable region. 
C) It remains in the stable region. 
D) There is not enough information to tell. 
A) It shifts toward the stable region. 
B) It shifts away from the stable region. 
C) It remains in the stable region. 
D) There is not enough information to tell.

Question 17

Which type of radioactivity is most dangerous to humans?

Accepted Answer

A) Alpha particles 
B) Beta particles 
C) Gamma rays 
D) None of the above are dangerous to humans. 
A) Alpha particles 
B) Beta particles 
C) Gamma rays 
D) None of the above are dangerous to humans.

Question 18

What do control rods do in a nuclear reactor?

Accepted Answer

Absorb neu

Question 19

What is nuclear fission?

Accepted Answer

A nuclear reaction i

Question 20

The following ${ }_{93}^{237} \mathrm{~Np}$ ? ${ }_{91}^{233} \mathrm{~Pa}$ can be balanced how?

Accepted Answer

A)  ${ }_{4}^{2} \mathrm{H}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{2}^{4} \mathrm{H}$. 
D)  ${ }_{2}^{4} \mathrm{H}$ 
A)  ${ }_{4}^{2} \mathrm{H}$ 
B)  ${ }_{2}^{4} \mathrm{He}$ 
C)  ${ }_{2}^{4} \mathrm{H}$. 
D)  ${ }_{2}^{4} \mathrm{H}$

The mass of a decaying radioactive element must equal the mass of the two particles into which it decays.

What are the two major roles of nuclear material in medicine?

The fission of uranium in a nuclear power plant fuel rod releases three neutrons. What are they then used for?

What can be used medically, when calcium needs to be studied?

What is critical mass?

How many homes in the United States does the Environmental Protection Agency estimate to have elevated radon levels?

Which isotope of uranium is usable for atomic weapons?

Which isotope of uranium is enriched when the term "enriched uranium" is used?

If a 10-gram sample of a radioactive element has been stored for 1 week and 2 days, and now only 1.25 g of the element remains, what is its half-life?

Of what do the large, white, "smoky" plumes coming from a nuclear power plant consist?

To what does the ionizing power of a radioactive particle refer?

Even though the United States makes up 5% of the world's population, how much of the world's energy resources does it consume?

What particle will balance the following: ${ }_{90}^{234} \mathrm{Th}$ ? ${ }_{91}^{234} \mathrm{~Pa}$ ?

How can the following be balanced: ${ }_{94}^{244} \mathrm{Pu}$ ? ${ }_{95}^{244} \mathrm{Am}$ ?

Elements that have no radioactive isotopes are referred to in what way?

What happens to a nucleus above the belt of stability that undergoes beta decay?

Which type of radioactivity is most dangerous to humans?

What do control rods do in a nuclear reactor?

What is nuclear fission?

The following ${ }_{93}^{237} \mathrm{~Np}$ ? ${ }_{91}^{233} \mathrm{~Pa}$ can be balanced how?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Chemical Equilibrium

Introduction to Biochemistry

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Exam 12: Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

The mass of a decaying radioactive element must equal the mass of the two particles into which it decays.

What are the two major roles of nuclear material in medicine?

The fission of uranium in a nuclear power plant fuel rod releases three neutrons. What are they then used for?

What can be used medically, when calcium needs to be studied?

What is critical mass?

How many homes in the United States does the Environmental Protection Agency estimate to have elevated radon levels?

Which isotope of uranium is usable for atomic weapons?

Which isotope of uranium is enriched when the term "enriched uranium" is used?

If a 10-gram sample of a radioactive element has been stored for 1 week and 2 days, and now only 1.25 g of the element remains, what is its half-life?

Of what do the large, white, "smoky" plumes coming from a nuclear power plant consist?

To what does the ionizing power of a radioactive particle refer?

Even though the United States makes up 5% of the world's population, how much of the world's energy resources does it consume?

What particle will balance the following: 90234Th{ }_{90}^{234} \mathrm{Th}90234​Th ? 91234 Pa{ }_{91}^{234} \mathrm{~Pa}91234​ Pa ?

How can the following be balanced: 94244Pu{ }_{94}^{244} \mathrm{Pu}94244​Pu ? 95244Am{ }_{95}^{244} \mathrm{Am}95244​Am ?

Elements that have no radioactive isotopes are referred to in what way?

What happens to a nucleus above the belt of stability that undergoes beta decay?

Which type of radioactivity is most dangerous to humans?

What do control rods do in a nuclear reactor?

What is nuclear fission?

The following 93237 Np{ }_{93}^{237} \mathrm{~Np}93237​ Np ? 91233 Pa{ }_{91}^{233} \mathrm{~Pa}91233​ Pa can be balanced how?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Chemical Equilibrium

Introduction to Biochemistry

Filters

What particle will balance the following: ${ }_{90}^{234} \mathrm{Th}$ ? ${ }_{91}^{234} \mathrm{~Pa}$ ?

How can the following be balanced: ${ }_{94}^{244} \mathrm{Pu}$ ? ${ }_{95}^{244} \mathrm{Am}$ ?

The following ${ }_{93}^{237} \mathrm{~Np}$ ? ${ }_{91}^{233} \mathrm{~Pa}$ can be balanced how?