Question 1

Which of these radioactive dating methods is utilized in determining the age of the Earth?

Accepted Answer

A)  Uranium dating 
B)  Carbon-14 dating 
C)  Nitrogen-14 dating 
D)  Oxygen-17 dating 
E)  Phosphorus dating 
A)  Uranium dating 
B)  Carbon-14 dating 
C)  Nitrogen-14 dating 
D)  Oxygen-17 dating 
E)  Phosphorus dating

Question 2

Which particle completes this equation?
​  
→ ____ +

Accepted Answer

A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton 
A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton

Question 3

The SI unit of radiation exposure is  _____.

Accepted Answer

A)  Becquerel 
B)  Curie 
C)  Sievert 
D)  Rad 
E)  Roentgen 
A)  Becquerel 
B)  Curie 
C)  Sievert 
D)  Rad 
E)  Roentgen

Question 4

Which of these is the correct representation of an alpha particle?

Accepted Answer

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

Question 5

Which of the following isotopes is naturally radioactive?

Accepted Answer

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

Question 6

Radon-222 has a half-life of 3.82 days. How many alpha emissions would have occurred when a 10 g of radon-222 sample decays over 19.1 days?

Accepted Answer

A)  3.39 × 1020 emissions 
B)  8.47 × 1020 emissions 
C)  5.42 × 1021 emissions 
D)  2.62 × 1022 emissions 
E)  4.18 × 1025 emissions 
A)  3.39 × 1020 emissions 
B)  8.47 × 1020 emissions 
C)  5.42 × 1021 emissions 
D)  2.62 × 1022 emissions 
E)  4.18 × 1025 emissions

Question 7

Which of the following scientists did not participate in early research surrounding fission reactions?

Accepted Answer

A)  Fermi 
B)  Strassmann 
C)  Curie 
D)  Meitner 
E)  Hahn 
A)  Fermi 
B)  Strassmann 
C)  Curie 
D)  Meitner 
E)  Hahn

Question 8

Which particle completes this equation?  (Here, m means unstable Ba-137.)
​  
→ ____ +

Accepted Answer

A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton 
A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton

Question 9

What percentage of a radioactive sample will remain after one half-life?

Accepted Answer

A)  100% 
B)  75% 
C)  50% 
D)  25% 
E)  0% 
A)  100% 
B)  75% 
C)  50% 
D)  25% 
E)  0%

Question 10

Which of the following radioactive decays  does not produce an atom of a different element?

Accepted Answer

A)  Alpha 
B)  Beta 
C)  Gamma 
D)  Electron capture 
E)  Positron 
A)  Alpha 
B)  Beta 
C)  Gamma 
D)  Electron capture 
E)  Positron

Question 11

Which among the following scientists is responsible for coining the term "radioactivity" and is also the only person to receive two noble prizes in science?

Accepted Answer

A)  Becquerel 
B)  Curie 
C)  Einstein 
D)  Rutherford 
E)  Thompson 
A)  Becquerel 
B)  Curie 
C)  Einstein 
D)  Rutherford 
E)  Thompson

Question 12

Which particle completes this equation?
​  
→ _____ +

Accepted Answer

A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton 
A)  An alpha particle 
B)  A beta particle 
C)  A gamma particle 
D)  A positron 
E)  A proton

Question 13

Fermi and Szilard achieved a critical mass by using a pile of uranium and graphite that resulted in a self-sustaining fission reaction lasting _____ minutes.

Accepted Answer

A)  2.5 
B)  5 
C)  1.5 
D)  4 
E)  4.5 
A)  2.5 
B)  5 
C)  1.5 
D)  4 
E)  4.5

Question 14

The term used to describe the melting of an overheated nuclear reactor core is known as the _____.

Accepted Answer

A)  Manhattan Project 
B)  chain reaction 
C)  China Syndrome 
D)  critical mass 
E)  nuclear  binding energy 
A)  Manhattan Project 
B)  chain reaction 
C)  China Syndrome 
D)  critical mass 
E)  nuclear  binding energy

Question 15

Which of the following scientists discovered nuclear fission while attempting to create a synthetic element?

Accepted Answer

A)  Fermi 
B)  Becquerel 
C)  Curie 
D)  Rutherford 
E)  Thompson 
A)  Fermi 
B)  Becquerel 
C)  Curie 
D)  Rutherford 
E)  Thompson

Question 16

Which of the following occurs during beta emission?

Accepted Answer

A)  The mass number increases. 
B)  The mass number decreases. 
C)  The atomic number increases. 
D)  The atomic number decreases. 
E)  None of the above 
A)  The mass number increases. 
B)  The mass number decreases. 
C)  The atomic number increases. 
D)  The atomic number decreases. 
E)  None of the above

Question 17

Krypton-85 decays via beta emission to produce _____.

Accepted Answer

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

Question 18

Which type of radioactive emission has the highest ionizing power?

Accepted Answer

A)  Positron 
B)  Beta particle 
C)  Alpha particle 
D)  Gamma ray 
E)  Neutron 
A)  Positron 
B)  Beta particle 
C)  Alpha particle 
D)  Gamma ray 
E)  Neutron

Question 19

A radioactive decay series will continue until _____.

Accepted Answer

A)  an unstable nucleus disintegrates to produce radioactive decay particles 
B)  a stable nucleus is produced 
C)  the same number of alpha and beta emissions have taken place 
D)  the same number of beta and gamma emissions have taken place 
E)  none of these 
A)  an unstable nucleus disintegrates to produce radioactive decay particles 
B)  a stable nucleus is produced 
C)  the same number of alpha and beta emissions have taken place 
D)  the same number of beta and gamma emissions have taken place 
E)  none of these

Question 20

The _____ of a radioactive element is the time required for half the nuclei in a sample to decay.

Accepted Answer

A)  half-life 
B)  mode of decay 
C)  emission series 
D)  decay constant 
E)  rate of decay 
A)  half-life 
B)  mode of decay 
C)  emission series 
D)  decay constant 
E)  rate of decay

Which of these radioactive dating methods is utilized in determining the age of the Earth?

Which particle completes this equation? → ____ +

The SI unit of radiation exposure is _____.

Which of these is the correct representation of an alpha particle?

Which of the following isotopes is naturally radioactive?

Radon-222 has a half-life of 3.82 days. How many alpha emissions would have occurred when a 10 g of radon-222 sample decays over 19.1 days?

Which of the following scientists did not participate in early research surrounding fission reactions?

Which particle completes this equation? (Here, m means unstable Ba-137.) → ____ +

What percentage of a radioactive sample will remain after one half-life?

Which of the following radioactive decays does not produce an atom of a different element?

Which among the following scientists is responsible for coining the term "radioactivity" and is also the only person to receive two noble prizes in science?

Which particle completes this equation? → _____ +

Fermi and Szilard achieved a critical mass by using a pile of uranium and graphite that resulted in a self-sustaining fission reaction lasting _____ minutes.

The term used to describe the melting of an overheated nuclear reactor core is known as the _____.

Which of the following scientists discovered nuclear fission while attempting to create a synthetic element?

Which of the following occurs during beta emission?

Krypton-85 decays via beta emission to produce _____.

Which type of radioactive emission has the highest ionizing power?

A radioactive decay series will continue until _____.

The _____ of a radioactive element is the time required for half the nuclei in a sample to decay.

Molecular Reasons

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Exam 8: Nuclear Chemistry

Which of these radioactive dating methods is utilized in determining the age of the Earth?

Which particle completes this equation? ​ → ____ +

The SI unit of radiation exposure is _____.

Which of these is the correct representation of an alpha particle?

Which of the following isotopes is naturally radioactive?

Radon-222 has a half-life of 3.82 days. How many alpha emissions would have occurred when a 10 g of radon-222 sample decays over 19.1 days?

Which of the following scientists did not participate in early research surrounding fission reactions?

Which particle completes this equation? (Here, m means unstable Ba-137.) ​ → ____ +

What percentage of a radioactive sample will remain after one half-life?

Which of the following radioactive decays does not produce an atom of a different element?

Which among the following scientists is responsible for coining the term "radioactivity" and is also the only person to receive two noble prizes in science?

Which particle completes this equation? ​ → _____ +

Fermi and Szilard achieved a critical mass by using a pile of uranium and graphite that resulted in a self-sustaining fission reaction lasting _____ minutes.

The term used to describe the melting of an overheated nuclear reactor core is known as the _____.

Which of the following scientists discovered nuclear fission while attempting to create a synthetic element?

Which of the following occurs during beta emission?

Krypton-85 decays via beta emission to produce _____.

Which type of radioactive emission has the highest ionizing power?

A radioactive decay series will continue until _____.

The _____ of a radioactive element is the time required for half the nuclei in a sample to decay.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

Which particle completes this equation? → ____ +

Which particle completes this equation? (Here, m means unstable Ba-137.) → ____ +

Which particle completes this equation? → _____ +