Question 1

After 3 half-lives have elapsed, the amount of a radioactive sample that has not decayed is

Accepted Answer

A)  1/3 the original amount 
B)  1/6 the original amount 
C)  1/8 the original amount 
D)  1/16 the original amount 
A)  1/3 the original amount 
B)  1/6 the original amount 
C)  1/8 the original amount 
D)  1/16 the original amount C

Question 2

Which of the following sets of data is consistent with a half-life of 5.0 days for a radionuclide sample?

Accepted Answer

A)  time elapsed = 20.0 days; fraction of nuclides decayed = 7/8 
B)  time elapsed = 15.0 days; fraction of nuclides undecayed = 1/16 
C)  time elapsed = 10.0 days; fraction of nuclides decayed = 1/4 
D)  more than one correct response 
E)  no correct response 
A)  time elapsed = 20.0 days; fraction of nuclides decayed = 7/8 
B)  time elapsed = 15.0 days; fraction of nuclides undecayed = 1/16 
C)  time elapsed = 10.0 days; fraction of nuclides decayed = 1/4 
D)  more than one correct response 
E)  no correct response E

Question 3

Alpha, beta, and gamma radiation are called ionizing radiation because, as they travel through matter, they

Accepted Answer

A)  cause ion pair formation 
B)  cause free radical formation 
C)  decay into ions 
D)  more than one correct response 
E)  no correct response 
A)  cause ion pair formation 
B)  cause free radical formation 
C)  decay into ions 
D)  more than one correct response 
E)  no correct response D

Question 4

The bombardment reaction involving   and   gives two products, one of which is   . The other product is

Accepted Answer

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

Question 5

Which of the following statements concerning nuclear fusion is correct?

Accepted Answer

A)  It is the process by which the sun generates its energy. 
B)  It is the basis for the generation of electrical energy in nuclear power plants. 
C)  It occurs at lower temperatures than does nuclear fission. 
D)  more than one correct response 
E)  no correct response 
A)  It is the process by which the sun generates its energy. 
B)  It is the basis for the generation of electrical energy in nuclear power plants. 
C)  It occurs at lower temperatures than does nuclear fission. 
D)  more than one correct response 
E)  no correct response

Question 6

A Geiger counter operates on the principle that radiation

Accepted Answer

A)  exposes photographic film 
B)  ionizes atoms and molecules 
C)  causes the temperature of water to increase 
D)  more than one correct response 
E)  no correct response 
A)  exposes photographic film 
B)  ionizes atoms and molecules 
C)  causes the temperature of water to increase 
D)  more than one correct response 
E)  no correct response

Question 7

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) Atoms with unstable nuclei are called nuclides and atoms with stable nuclei are called isotopes.
(2) In radioactive decay, a radionuclide is transformed into the nuclide of another element.
(3) The magnitude of the decay rate for a radionuclide is a function of the nuclide's temperature.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 8

The term nuclear energy is most closely associated with which one of the following processes?

Accepted Answer

A)  nuclear fusion 
B)  nuclear fission 
C)  radioactive decay 
D)  bombardment reactions 
A)  nuclear fusion 
B)  nuclear fission 
C)  radioactive decay 
D)  bombardment reactions

Question 9

Which of the following nuclear equations has an incorrect characterization?

Accepted Answer

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

Question 10

For the following nuclear reaction, select the correct reaction type from the response list.

Accepted Answer

A)  bombardment 
B)  decay 
C)  fission 
D)  fusion 
A)  bombardment 
B)  decay 
C)  fission 
D)  fusion

Question 11

For the following radiation characterization, choose the correct type of radiation from the response list: one-eight of sample is undecayed after two hours.

Accepted Answer

A)  alpha particle 
B)  beta particle 
C)  gamma radiation 
D)  both alpha and beta particles 
A)  alpha particle 
B)  beta particle 
C)  gamma radiation 
D)  both alpha and beta particles

Question 12

Which of the following would produce the most ion pairs as it interacts with matter?

Accepted Answer

A)  alpha particle 
B)  beta particle 
C)  gamma radiation 
D)  neutron 
A)  alpha particle 
B)  beta particle 
C)  gamma radiation 
D)  neutron

Question 13

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) All nuclides of all the transuranium elements are radioactive.
(2) Alpha particles are the most massive and the slowest of the three types of naturally-occurring radioactive emissions.
(3) Four grams of an eight-gram sample of a radioactive nuclide will not have decayed after the elapse of one half life.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 14

Which of the following statement concerning the penetrating power into matter of various types of radiation is correct?

Accepted Answer

A)  Alpha and beta particles penetrate to the same degree as gamma radiation. 
B)  Beta particles penetrate deepter than gamma radiation. 
C)  Beta particles and gamma radiation penetrate equally. 
D)  Gamma radiation penetrates deeper than both alpha and beta particles. 
A)  Alpha and beta particles penetrate to the same degree as gamma radiation. 
B)  Beta particles penetrate deepter than gamma radiation. 
C)  Beta particles and gamma radiation penetrate equally. 
D)  Gamma radiation penetrates deeper than both alpha and beta particles.

Question 15

Radioisotopes used in diagnostic medical procedures are usually

Accepted Answer

A)  alpha emitters 
B)  beta emitters 
C)  gamma emitters 
D)  radionuclides with long half-lives 
A)  alpha emitters 
B)  beta emitters 
C)  gamma emitters 
D)  radionuclides with long half-lives

Question 16

If 6.00 grams of a 8.00 gram sample of a radioactive substance undergoes decay in 180 minutes, then the half-life of the substance is

Accepted Answer

A)  45 minutes 
B)  90 minutes 
C)  360 minutes 
D)  720 minutes 
A)  45 minutes 
B)  90 minutes 
C)  360 minutes 
D)  720 minutes

Question 17

For the following small particle, select the correct mass-charge characterization from the response list: gamma radiation.

Accepted Answer

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

Question 18

For the following small particle, select the correct mass-charge characterization from the response list: beta particle.

Accepted Answer

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

Question 19

The loss of a beta particle by a radionuclide causes

Accepted Answer

A)  the atomic number to decrease by one. 
B)  the mass number to decrease by two. 
C)  more than one correct response 
D)  no correct response 
A)  the atomic number to decrease by one. 
B)  the mass number to decrease by two. 
C)  more than one correct response 
D)  no correct response

Question 20

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) Radioactive nuclides produced by bombardment reactions obey the same laws as naturally-occurring radioactive nuclides.
(2) The penetrating power of beta particles exceeds that of gamma rays.
(3) After three half-lives have elapsed, three-fourths of a radioactive sample would have decayed.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Exam 11: Nuclear Chemistry

After 3 half-lives have elapsed, the amount of a radioactive sample that has not decayed is

Which of the following sets of data is consistent with a half-life of 5.0 days for a radionuclide sample?

Alpha, beta, and gamma radiation are called ionizing radiation because, as they travel through matter, they

The bombardment reaction involving and gives two products, one of which is . The other product is

Which of the following statements concerning nuclear fusion is correct?

A Geiger counter operates on the principle that radiation

The term nuclear energy is most closely associated with which one of the following processes?

Which of the following nuclear equations has an incorrect characterization?

For the following nuclear reaction, select the correct reaction type from the response list.

For the following radiation characterization, choose the correct type of radiation from the response list: one-eight of sample is undecayed after two hours.

Which of the following would produce the most ion pairs as it interacts with matter?

Which of the following statement concerning the penetrating power into matter of various types of radiation is correct?

Radioisotopes used in diagnostic medical procedures are usually

If 6.00 grams of a 8.00 gram sample of a radioactive substance undergoes decay in 180 minutes, then the half-life of the substance is

For the following small particle, select the correct mass-charge characterization from the response list: gamma radiation.

For the following small particle, select the correct mass-charge characterization from the response list: beta particle.

The loss of a beta particle by a radionuclide causes

Basic Concepts About Matter

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters