Question 1

The process by which a large nucleus breaks into smaller pieces, releasing large amounts of energy is called
nuclear ________.

Accepted Answer

fission

Question 2

What is the radiation particle used in the bombardment of nitrogen-14?

Accepted Answer

A) neutron 
B) gamma ray 
C) alpha particle 
D) beta particle 
E) proton 
A) neutron 
B) gamma ray 
C) alpha particle 
D) beta particle 
E) proton A

Question 3

The radioisotope used as a diagnostic tool to measure thyroid function is ________.

Accepted Answer

I-131

Question 4

Iodine-131 decays by beta decay to

Accepted Answer

A) iodine-132. 
B) xenon-131. 
C) tellurium-131. 
D) bromine-131. 
E) iodine-130. 
A) iodine-132. 
B) xenon-131. 
C) tellurium-131. 
D) bromine-131. 
E) iodine-130.

Question 5

Nitrogen-17 is a beta emitter. What is the isotope produced by the radioactive decay?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

The nuclear reaction   is an example of

Accepted Answer

A) fission. 
B) fusion. 
C) beta decay. 
D) alpha decay. 
E) translation. 
A) fission. 
B) fusion. 
C) beta decay. 
D) alpha decay. 
E) translation.

Question 7

The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?

Accepted Answer

A) 0.25 mg 
B) 0.50 mg 
C) 4.0 mg 
D) 1.0 mg 
E) 2.0 mg 
A) 0.25 mg 
B) 0.50 mg 
C) 4.0 mg 
D) 1.0 mg 
E) 2.0 mg

Question 8

A patient receives  3.0 mL of a solution containing technetium-  99m  for a breast image. If the activity of the technetium  -99m  is  9.5 mCi/mL , what is the dose received by the patient?

Accepted Answer

A)   3.2 mCi 
B)    
C)   29 mCi 
D)   28.5 mCi 
E)   9.5 mCi 
A)   3.2 mCi 
B)    
C)   29 mCi 
D)   28.5 mCi 
E)   9.5 mCi

Question 9

Write the word or phrase that best completes each statement or answers the question.

Accepted Answer

The answer of Write the word or phrase that best...

Question 10

In the Sun, nuclei of hydrogen combine to form a larger nucleus and release a great amount of energy. The process is known as

Accepted Answer

A) metathesis. 
B) fusion. 
C) fission. 
D) ionization. 
E) chain reaction. 
A) metathesis. 
B) fusion. 
C) fission. 
D) ionization. 
E) chain reaction.

Question 11

One symbol for the beta particle β. Another symbol for the same particle is ________.

Accepted Answer

The answer of One symbol for the beta particle β....

Question 12

When a positron is emitted from the nucleus of an atom, the mass number

Accepted Answer

A) decreases by two units. 
B) remains the same. 
C) increases by two units. 
D) decreases by one unit. 
E) increases by one unit. 
A) decreases by two units. 
B) remains the same. 
C) increases by two units. 
D) decreases by one unit. 
E) increases by one unit.

Question 13

The process in which a nucleus spontaneously breaks down by emitting radiation is known as

Accepted Answer

A) transmutation. 
B) radioactive decay. 
C) fusion. 
D) transformation. 
E) a chain reaction. 
A) transmutation. 
B) radioactive decay. 
C) fusion. 
D) transformation. 
E) a chain reaction.

Question 14

A sample of phosphorus-32 with an activity of   produces   disintegrations per second.

Accepted Answer

The answer of A sample of phosphorus-32 with an activity...

Question 15

When an atom of uranium-235 is bombarded with neutrons, it splits into smaller nuclei and produces a great amount of energy. This nuclear process is called

Accepted Answer

A) fusion. 
B) ionization. 
C) decomposition. 
D) chain reaction. 
E) fission. 
A) fusion. 
B) ionization. 
C) decomposition. 
D) chain reaction. 
E) fission.

Question 16

An imaging technique that detects the energy emitted by hydrogen atoms in a magnetic field is known as

Accepted Answer

A) magnetic resonance imaging (MRI). 
B) radioactive tracer study. 
C) computed tomography (CT). 
D) positron emission tomography (PET). 
E) supermagnetic tomography (SMT). 
A) magnetic resonance imaging (MRI). 
B) radioactive tracer study. 
C) computed tomography (CT). 
D) positron emission tomography (PET). 
E) supermagnetic tomography (SMT).

Question 17

Krypton-79 has a half-life of 35 hours. How many half-lives have passed after 105 hours?

Accepted Answer

A) 1 half-life 
B) 2 half-lives 
C) 3 half-lives 
D) 4 half-lives 
E) 5 half-lives 
A) 1 half-life 
B) 2 half-lives 
C) 3 half-lives 
D) 4 half-lives 
E) 5 half-lives

Question 18

Write the word or phrase that best completes each statement or answers the question.

Accepted Answer

The answer of Write the word or phrase that best...

Question 19

A sample of technetium-99m has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99m sample in 5.0 sec?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 20

Which of the following types of radiation has the highest energy?

Accepted Answer

A) gamma rays 
B) visible light 
C) alpha particles 
D) beta particles 
E) All of these have the same energy. 
A) gamma rays 
B) visible light 
C) alpha particles 
D) beta particles 
E) All of these have the same energy.

Exam 5: Nuclear Chemistry

The process by which a large nucleus breaks into smaller pieces, releasing large amounts of energy is called nuclear ________.

What is the radiation particle used in the bombardment of nitrogen-14?

The radioisotope used as a diagnostic tool to measure thyroid function is ________.

Iodine-131 decays by beta decay to

Nitrogen-17 is a beta emitter. What is the isotope produced by the radioactive decay?

The nuclear reaction is an example of

The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?

A patient receives 3.0 mL of a solution containing technetium- 99m for a breast image. If the activity of the technetium -99m is 9.5 mCi/mL , what is the dose received by the patient?

Write the word or phrase that best completes each statement or answers the question.

In the Sun, nuclei of hydrogen combine to form a larger nucleus and release a great amount of energy. The process is known as

One symbol for the beta particle β. Another symbol for the same particle is ________.

When a positron is emitted from the nucleus of an atom, the mass number

The process in which a nucleus spontaneously breaks down by emitting radiation is known as

A sample of phosphorus-32 with an activity of produces disintegrations per second.

When an atom of uranium-235 is bombarded with neutrons, it splits into smaller nuclei and produces a great amount of energy. This nuclear process is called

An imaging technique that detects the energy emitted by hydrogen atoms in a magnetic field is known as

Krypton-79 has a half-life of 35 hours. How many half-lives have passed after 105 hours?

Write the word or phrase that best completes each statement or answers the question.

A sample of technetium-99m has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99m sample in 5.0 sec?

Which of the following types of radiation has the highest energy?

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