Question 1

Which statement about positron emission is FALSE?

Accepted Answer

A) occurs when a proton is converted into a neutron and a positron 
B) symbol is:   e 
C) occurs with alpha and beta decay 
D) alternative symbol is β+ 
E) All of the above are true. 
A) occurs when a proton is converted into a neutron and a positron 
B) symbol is:   e 
C) occurs with alpha and beta decay 
D) alternative symbol is β+ 
E) All of the above are true.

Question 2

If an object is 17,190 yrs old,how many C-14   half-lives have occurred as compared to a living organism?

Accepted Answer

A) 6 half-lives 
B) 5 half-lives 
C) 4 half-lives 
D) 3 half-lives 
E) More information is needed. 
A) 6 half-lives 
B) 5 half-lives 
C) 4 half-lives 
D) 3 half-lives 
E) More information is needed.

Question 3

One danger of a nuclear power plant is that a chain reaction could produce a bomb.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following types of radiation has the highest penetrating power?

Accepted Answer

A) alpha particles 
B) beta particles 
C) gamma rays 
D) positrons 
E) none of the above 
A) alpha particles 
B) beta particles 
C) gamma rays 
D) positrons 
E) none of the above

Question 5

What is the main product when   U undergoes alpha decay?

Accepted Answer

A)    Am 
B)    Th 
C)    U 
D)    Th 
E) none of the above 
A)    Am 
B)    Th 
C)    U 
D)    Th 
E) none of the above

Question 6

A Geiger-Muller counter detects radioactivity by:

Accepted Answer

A) developing film which is exposed by radioactive particles. 
B) emission of light from a NaI crystal when radioactivity passes through the crystal. 
C) ionization of argon gas in a chamber which produces an electrical signal. 
D) analyzing the mass and velocity of each particle. 
E) none of the above 
A) developing film which is exposed by radioactive particles. 
B) emission of light from a NaI crystal when radioactivity passes through the crystal. 
C) ionization of argon gas in a chamber which produces an electrical signal. 
D) analyzing the mass and velocity of each particle. 
E) none of the above

Question 7

Nuclear fission reactions produce ten times more energy per gram than fusion reactions.

Accepted Answer

A) True 
 B)False

Question 8

Tritium (   H )is an isotope of hydrogen that is sometimes used to make the hands of watches glow in the dark.The half-life of tritium is 12.3 years.After 49 years,approximately how much of the original tritium remains?

Accepted Answer

A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 3.12% 
A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 3.12%

Question 9

Nuclear equations do not need to be balanced since a new element forms.

Accepted Answer

A) True 
 B)False

Question 10

What happens to the atomic number of a nucleus that emits a beta particle?

Accepted Answer

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

Question 11

One method of nuclear medicine uses radioactive isotopes to scan specific regions of the body.

Accepted Answer

A) True 
 B)False

Question 12

A 1.2 kg sample of Th-228 has a half-life of 1.9 years.How many grams of Th is left after 5.7 years?

Accepted Answer

A) 150 
B) 75 
C) 300 
D) 0 
E) none of the above 
A) 150 
B) 75 
C) 300 
D) 0 
E) none of the above

Question 13

Beyond which element in the periodic table (based on atomic number)are the successive elemental nuclei considered to be radioactive?

Accepted Answer

A) Uranium 
B) Radium 
C) Barium 
D) Bismuth 
E) Lead 
A) Uranium 
B) Radium 
C) Barium 
D) Bismuth 
E) Lead

Question 14

Alpha particles have lower penetrating power than the other types of radioactive emissions.

Accepted Answer

A) True 
 B)False

Question 15

During the career of Marie Curie,she:

Accepted Answer

A) won a Nobel prize in chemistry. 
B) won a Nobel prize in physics. 
C) discovered the element polonium. 
D) discovered the element radium. 
E) all of the above 
A) won a Nobel prize in chemistry. 
B) won a Nobel prize in physics. 
C) discovered the element polonium. 
D) discovered the element radium. 
E) all of the above

Question 16

What type of radioactive decay produces a daughter nuclide that is the same element as the parent nuclide?

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) positron 
E) none of the above 
A) alpha 
B) beta 
C) gamma 
D) positron 
E) none of the above

Question 17

Uranium-235 is capable of undergoing a fission chain reaction.

Accepted Answer

A) True 
 B)False

Question 18

The rate of spontaneous nuclear decay:

Accepted Answer

A) can be increased by increasing the temperature. 
B) can be increased by increasing the concentration of the radioactive element. 
C) is independent of concentration or temperature. 
D) can be increased by addition of a nuclear catalyst. 
E) all of the above 
A) can be increased by increasing the temperature. 
B) can be increased by increasing the concentration of the radioactive element. 
C) is independent of concentration or temperature. 
D) can be increased by addition of a nuclear catalyst. 
E) all of the above

Question 19

If an object is 28,650 yrs old,how many C-14   half-lives have occurred as compared to a living organism?

Accepted Answer

A) 6 half-lives 
B) 5 half -lives 
C) 4 half-lives 
D) 3 half-lives 
E) More information is needed. 
A) 6 half-lives 
B) 5 half -lives 
C) 4 half-lives 
D) 3 half-lives 
E) More information is needed.

Question 20

The radioactive gas radon:

Accepted Answer

A) is a product of the radioactive decay series of uranium. 
B) is the single greatest source of human radiation exposure. 
C) is more hazardous for smokers than nonsmokers. 
D) all of the above 
E) none of the above 
A) is a product of the radioactive decay series of uranium. 
B) is the single greatest source of human radiation exposure. 
C) is more hazardous for smokers than nonsmokers. 
D) all of the above 
E) none of the above

Which statement about positron emission is FALSE?

If an object is 17,190 yrs old,how many C-14 half-lives have occurred as compared to a living organism?

One danger of a nuclear power plant is that a chain reaction could produce a bomb.

Which of the following types of radiation has the highest penetrating power?

What is the main product when U undergoes alpha decay?

A Geiger-Muller counter detects radioactivity by:

Nuclear fission reactions produce ten times more energy per gram than fusion reactions.

Tritium ( H )is an isotope of hydrogen that is sometimes used to make the hands of watches glow in the dark.The half-life of tritium is 12.3 years.After 49 years,approximately how much of the original tritium remains?

Nuclear equations do not need to be balanced since a new element forms.

What happens to the atomic number of a nucleus that emits a beta particle?

One method of nuclear medicine uses radioactive isotopes to scan specific regions of the body.

A 1.2 kg sample of Th-228 has a half-life of 1.9 years.How many grams of Th is left after 5.7 years?

Beyond which element in the periodic table (based on atomic number)are the successive elemental nuclei considered to be radioactive?

Alpha particles have lower penetrating power than the other types of radioactive emissions.

During the career of Marie Curie,she:

What type of radioactive decay produces a daughter nuclide that is the same element as the parent nuclide?

Uranium-235 is capable of undergoing a fission chain reaction.

The rate of spontaneous nuclear decay:

If an object is 28,650 yrs old,how many C-14 half-lives have occurred as compared to a living organism?

The radioactive gas radon:

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Organic Chemistry

Biochemistry

Filters

Exam 17: Radioactivity and Nuclear Chemistry

Which statement about positron emission is FALSE?

If an object is 17,190 yrs old,how many C-14 half-lives have occurred as compared to a living organism?

One danger of a nuclear power plant is that a chain reaction could produce a bomb.

Which of the following types of radiation has the highest penetrating power?

What is the main product when U undergoes alpha decay?

A Geiger-Muller counter detects radioactivity by:

Nuclear fission reactions produce ten times more energy per gram than fusion reactions.

Tritium ( H )is an isotope of hydrogen that is sometimes used to make the hands of watches glow in the dark.The half-life of tritium is 12.3 years.After 49 years,approximately how much of the original tritium remains?

Nuclear equations do not need to be balanced since a new element forms.

What happens to the atomic number of a nucleus that emits a beta particle?

One method of nuclear medicine uses radioactive isotopes to scan specific regions of the body.

A 1.2 kg sample of Th-228 has a half-life of 1.9 years.How many grams of Th is left after 5.7 years?

Beyond which element in the periodic table (based on atomic number)are the successive elemental nuclei considered to be radioactive?

Alpha particles have lower penetrating power than the other types of radioactive emissions.

During the career of Marie Curie,she:

What type of radioactive decay produces a daughter nuclide that is the same element as the parent nuclide?

Uranium-235 is capable of undergoing a fission chain reaction.

The rate of spontaneous nuclear decay:

If an object is 28,650 yrs old,how many C-14 half-lives have occurred as compared to a living organism?

The radioactive gas radon:

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Organic Chemistry

Biochemistry

Filters