Question 1

Instantaneous exposure to radiation at a dose of ____ rem or greater is most likely lethal.

Accepted Answer

A) 40 
B) 100 
C) 200 
D) 300 
E) 500 
A) 40 
B) 100 
C) 200 
D) 300 
E) 500

Question 2

Which of these is the correct unit for measuring human radioactive exposure?

Accepted Answer

A) Rad 
B) Curie 
C) Rem 
D) Rod 
E) Rig 
A) Rad 
B) Curie 
C) Rem 
D) Rod 
E) Rig

Question 3

Which type of radioactive emission is analogous to an electron being emitted?

Accepted Answer

A) Positrons 
B) Neutrons 
C) Alpha particle 
D) Gamma rays 
E) Beta particle 
A) Positrons 
B) Neutrons 
C) Alpha particle 
D) Gamma rays 
E) Beta particle

Question 4

Which of these two scientists built the first nuclear reactor?

Accepted Answer

A) Einstein and Rutherford 
B) Hahn and Strassmann 
C) Curie and Becquerel 
D) Meitner and Fermi 
E) Fermi and Szilard 
A) Einstein and Rutherford 
B) Hahn and Strassmann 
C) Curie and Becquerel 
D) Meitner and Fermi 
E) Fermi and Szilard

Question 5

The difference between the experimentally determined mass and the sum of the masses of all protons, neutrons , and electrons  of an atom is known as the ____.

Accepted Answer

A) nuclear mass 
B) molar mass 
C) mass defect 
D) decay mass 
E) isotopic mass 
A) nuclear mass 
B) molar mass 
C) mass defect 
D) decay mass 
E) isotopic mass

Question 6

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 7

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

Question 8

Which of these atoms has the most stable nuclei?

Accepted Answer

A) Ca 
B) Co 
C) Mg 
D) Ne 
E) Xe 
A) Ca 
B) Co 
C) Mg 
D) Ne 
E) Xe

Question 9

Calculate the mass defect of 37Cl, which has a mass of 36.9659 amu.(proton = 1.0073 amu; neutron = 1.0087 amu)

Accepted Answer

A) 2.693 amu 
B) 0.388 amu 
C) 0.341 amu 
D) 0.332 amu 
E) 0.263 amu 
A) 2.693 amu 
B) 0.388 amu 
C) 0.341 amu 
D) 0.332 amu 
E) 0.263 amu

Question 10

Which of the following occurs during gamma 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 11

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 12

Which of these elements is the largest naturally occurring sources of radiation?

Accepted Answer

A) Xenon 
B) Argon 
C) Neon 
D) Radon 
E) Krypton 
A) Xenon 
B) Argon 
C) Neon 
D) Radon 
E) Krypton

Question 13

The time required for an element to go from half the nuclei of a sample to decay is known as the:

Accepted Answer

A) half-life. 
B) mode of decay. 
C) emission series. 
D) radioactivity. 
E) Both A and B are correct. 
A) half-life. 
B) mode of decay. 
C) emission series. 
D) radioactivity. 
E) Both A and B are correct.

Question 14

Which of these statements about fusion is correct ?

Accepted Answer

A) Two lighter nuclei combine to form a heavier nuclei. 
B) Fusion of uranium-238 nuclei was at the heart of the first atomic bomb. 
C) Fusion waste products are typically more hazardous than fission materials. 
D) Fusion reactions release a large amount of energy but less than fission reactions. 
E) All of these statements are correct. 
A) Two lighter nuclei combine to form a heavier nuclei. 
B) Fusion of uranium-238 nuclei was at the heart of the first atomic bomb. 
C) Fusion waste products are typically more hazardous than fission materials. 
D) Fusion reactions release a large amount of energy but less than fission reactions. 
E) All of these statements are correct.

Question 15

The amount of material necessary to sustain a fission reaction is known as ____.

Accepted Answer

A) radioactivity 
B) tonnage 
C) substantial mass 
D) critical mass 
E) chain reaction 
A) radioactivity 
B) tonnage 
C) substantial mass 
D) critical mass 
E) chain reaction

Question 16

Which of these health concerns are most common with increased radon exposure?

Accepted Answer

A) Thyroid cancer 
B) Breast cancer 
C) Lung cancer 
D) Birth defects 
E) Leukemia 
A) Thyroid cancer 
B) Breast cancer 
C) Lung cancer 
D) Birth defects 
E) Leukemia

Question 17

The half-life of phosphorous-33 is 25.3 days. How long will it take for 64 grams of P-33 to decay to 1.0 grams?

Accepted Answer

A) 10.67 days 
B) 75 days 
C) 100 days 
D) 120 days 
E) 151.8 days 
A) 10.67 days 
B) 75 days 
C) 100 days 
D) 120 days 
E) 151.8 days

Question 18

Which of the following occurs during alpha emission?

Accepted Answer

A) The mass number increases 
B) The mass number decreases 
C) The atomic number increases 
D) The atomic number decreases 
E) More than one of the above is correct. 
A) The mass number increases 
B) The mass number decreases 
C) The atomic number increases 
D) The atomic number decreases 
E) More than one of the above is correct.

Question 19

Which process best describes beta decay?

Accepted Answer

A) A proton is converted into a neutron and an electron. 
B) A neutron is converted into a proton and an electron. 
C) A proton and an electron are converted into a neutron. 
D) A neutron and an electron are converted into a proton. 
A) A proton is converted into a neutron and an electron. 
B) A neutron is converted into a proton and an electron. 
C) A proton and an electron are converted into a neutron. 
D) A neutron and an electron are converted into a proton.

Question 20

Which isotope is naturally radioactive?

Accepted Answer

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

Instantaneous exposure to radiation at a dose of ____ rem or greater is most likely lethal.

Which of these is the correct unit for measuring human radioactive exposure?

Which type of radioactive emission is analogous to an electron being emitted?

Which of these two scientists built the first nuclear reactor?

The difference between the experimentally determined mass and the sum of the masses of all protons, neutrons , and electrons of an atom is known as the ____.

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

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

Which of these atoms has the most stable nuclei?

Calculate the mass defect of ³⁷Cl, which has a mass of 36.9659 amu.(proton = 1.0073 amu; neutron = 1.0087 amu)

Which of the following occurs during gamma emission?

Which of the following occurs during beta emission?

Which of these elements is the largest naturally occurring sources of radiation?

The time required for an element to go from half the nuclei of a sample to decay is known as the:

Which of these statements about fusion is correct ?

The amount of material necessary to sustain a fission reaction is known as ____.

Which of these health concerns are most common with increased radon exposure?

The half-life of phosphorous-33 is 25.3 days. How long will it take for 64 grams of P-33 to decay to 1.0 grams?

Which of the following occurs during alpha emission?

Which process best describes beta decay?

Which isotope is naturally radioactive?

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

Filters

Exam 8: Nuclear Chemistry

Instantaneous exposure to radiation at a dose of ____ rem or greater is most likely lethal.

Which of these is the correct unit for measuring human radioactive exposure?

Which type of radioactive emission is analogous to an electron being emitted?

Which of these two scientists built the first nuclear reactor?

The difference between the experimentally determined mass and the sum of the masses of all protons, neutrons , and electrons of an atom is known as the ____.

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

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

Which of these atoms has the most stable nuclei?

Calculate the mass defect of 37Cl, which has a mass of 36.9659 amu.(proton = 1.0073 amu; neutron = 1.0087 amu)

Which of the following occurs during gamma emission?

Which of the following occurs during beta emission?

Which of these elements is the largest naturally occurring sources of radiation?

The time required for an element to go from half the nuclei of a sample to decay is known as the:

Which of these statements about fusion is correct ?

The amount of material necessary to sustain a fission reaction is known as ____.

Which of these health concerns are most common with increased radon exposure?

The half-life of phosphorous-33 is 25.3 days. How long will it take for 64 grams of P-33 to decay to 1.0 grams?

Which of the following occurs during alpha emission?

Which process best describes beta decay?

Which isotope is naturally radioactive?

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

Filters

Calculate the mass defect of ³⁷Cl, which has a mass of 36.9659 amu.(proton = 1.0073 amu; neutron = 1.0087 amu)