Question 1

Instantaneous exposure to radiation at a dosage of -____-_ rem or higher is lethal.

Accepted Answer

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

Question 2

There are no stable isotopes for elements with _____.

Accepted Answer

A)  atomic number greater than 82 
B)  atomic number greater than 83 
C)  atomic number lower than 83 
D)  atomic number lower than 82 
E)  atomic number lower than 81 
A)  atomic number greater than 82 
B)  atomic number greater than 83 
C)  atomic number lower than 83 
D)  atomic number lower than 82 
E)  atomic number lower than 81 B

Question 3

Which of these health concerns is/are most common for higher 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 C

Question 4

Which among the following elements is the largest naturally occurring source 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 5

Uranium-238 decays via alpha emission to produce _____.

Accepted Answer

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

Question 6

Which of these scientists characterized and began to explain radioactivity?

Accepted Answer

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

Question 7

Which of these equations gives the best explanation for mass defect?

Accepted Answer

A)  E = h υ 
B)  c = λυ 
C)  Protons − neutrons 
D)  E = mc2 
E)  E = m/v 
A)  E = h υ 
B)  c = λυ 
C)  Protons − neutrons 
D)  E = mc2 
E)  E = m/v

Question 8

Nitrogen-13 has a half-life of 10 minutes. What amount of a 16 mg sample would remain after 30 minutes?

Accepted Answer

A)  0.5 mg 
B)  1 mg 
C)  2 mg 
D)  4 mg 
E)  8 mg 
A)  0.5 mg 
B)  1 mg 
C)  2 mg 
D)  4 mg 
E)  8 mg

Question 9

Thorium-234 decays via beta emission to produce _____.

Accepted Answer

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

Question 10

The energy that holds the nucleons together is known as the _____.

Accepted Answer

A)  nuclear binding energy 
B)  mass defect 
C)  critical mass 
D)  fusion energy 
E)  substantial mass 
A)  nuclear binding energy 
B)  mass defect 
C)  critical mass 
D)  fusion energy 
E)  substantial mass

Question 11

Which of the following occurs during alpha emission?

Accepted Answer

A)  The mass number increases. 
B)  The mass number remains the same. 
C)  The atomic number increases. 
D)  The atomic number decreases. 
E)  The atomic number remains the same. 
A)  The mass number increases. 
B)  The mass number remains the same. 
C)  The atomic number increases. 
D)  The atomic number decreases. 
E)  The atomic number remains the same.

Question 12

Which of the following nuclei has the highest binding energy?

Accepted Answer

A)  Fe 
B)  Ar 
C)  U 
D)  Al 
E)  Na 
A)  Fe 
B)  Ar 
C)  U 
D)  Al 
E)  Na

Question 13

The number of radioactive disintegrations per second is measured in units of ____.

Accepted Answer

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

Question 14

Which among the following radioactive exposures would be the most damaging if it occurs inside a human body?

Accepted Answer

A)  Gamma radiation 
B)  Alpha emission 
C)  Beta emission 
D)  Positron emission 
E)  Electron emission 
A)  Gamma radiation 
B)  Alpha emission 
C)  Beta emission 
D)  Positron emission 
E)  Electron emission

Question 15

Instantaneous exposure to a radiation at a dosage of _____ or greater is may lead to radiation sickness.

Accepted Answer

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

Question 16

Which of these statements about fission  reactions  is incorrect ?

Accepted Answer

A)  Fission reactions release a large amount of energy. 
B)  Two lighter nuclei combine to form a heavier nucleus. 
C)  The fission of uranium-235 is initiated by the absorption of a neutron. 
D)  The first atomic bomb involved the fission of uranium-235 nuclei. 
E)  Fermi mistakenly discovered a fission reaction while synthesizing a new element. 
A)  Fission reactions release a large amount of energy. 
B)  Two lighter nuclei combine to form a heavier nucleus. 
C)  The fission of uranium-235 is initiated by the absorption of a neutron. 
D)  The first atomic bomb involved the fission of uranium-235 nuclei. 
E)  Fermi mistakenly discovered a fission reaction while synthesizing a new element.

Question 17

Which of these is/are a common source of radiation exposure for humans?

Accepted Answer

A)  X-rays 
B)  Cancer treatment 
C)  Radon gas 
D)  X-rays and cancer treatment 
E)  X-rays, cancer treatment, and radon gas 
A)  X-rays 
B)  Cancer treatment 
C)  Radon gas 
D)  X-rays and cancer treatment 
E)  X-rays, cancer treatment, and radon gas

Question 18

The eruption of a volcano unearths rocks from deep within the Earth's crust. The rocks are estimated to be 9 × 10  9  years old. Which radioactive dating method/methods would give the most accurate age of the fossils?
I. Uranium dating
II. Carbon-14 dating
III. Sodium dating

Accepted Answer

A)  I only 
B)  II only 
C)  III 
D)  I and III 
E)  II and III 
A)  I only 
B)  II only 
C)  III 
D)  I and III 
E)  II and III

Question 19

Which among the following atoms has the most stable nuclei?

Accepted Answer

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

Question 20

The half-life of phosphorous-33 (P-33) is 25.3 days. How long will 64 g of P-33 take to decay to 1.0 g?

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

Instantaneous exposure to radiation at a dosage of -____-_ rem or higher is lethal.

There are no stable isotopes for elements with _____.

Which of these health concerns is/are most common for higher radon exposure?

Which among the following elements is the largest naturally occurring source of radiation?

Uranium-238 decays via alpha emission to produce _____.

Which of these scientists characterized and began to explain radioactivity?

Which of these equations gives the best explanation for mass defect?

Nitrogen-13 has a half-life of 10 minutes. What amount of a 16 mg sample would remain after 30 minutes?

Thorium-234 decays via beta emission to produce _____.

The energy that holds the nucleons together is known as the _____.

Which of the following occurs during alpha emission?

Which of the following nuclei has the highest binding energy?

The number of radioactive disintegrations per second is measured in units of ____.

Which among the following radioactive exposures would be the most damaging if it occurs inside a human body?

Instantaneous exposure to a radiation at a dosage of _____ or greater is may lead to radiation sickness.

Which of these statements about fission reactions is incorrect ?

Which of these is/are a common source of radiation exposure for humans?

The eruption of a volcano unearths rocks from deep within the Earth's crust. The rocks are estimated to be 9 × 10 ⁹ years old. Which radioactive dating method/methods would give the most accurate age of the fossils? I. Uranium dating II. Carbon-14 dating III. Sodium dating

Which among the following atoms has the most stable nuclei?

The half-life of phosphorous-33 (P-33) is 25.3 days. How long will 64 g of P-33 take to decay to 1.0 g?

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Exam 8: Nuclear Chemistry

Instantaneous exposure to radiation at a dosage of -____-_ rem or higher is lethal.

There are no stable isotopes for elements with _____.

Which of these health concerns is/are most common for higher radon exposure?

Which among the following elements is the largest naturally occurring source of radiation?

Uranium-238 decays via alpha emission to produce _____.

Which of these scientists characterized and began to explain radioactivity?

Which of these equations gives the best explanation for mass defect?

Nitrogen-13 has a half-life of 10 minutes. What amount of a 16 mg sample would remain after 30 minutes?

Thorium-234 decays via beta emission to produce _____.

The energy that holds the nucleons together is known as the _____.

Which of the following occurs during alpha emission?

Which of the following nuclei has the highest binding energy?

The number of radioactive disintegrations per second is measured in units of ____.

Which among the following radioactive exposures would be the most damaging if it occurs inside a human body?

Instantaneous exposure to a radiation at a dosage of _____ or greater is may lead to radiation sickness.

Which of these statements about fission reactions is incorrect ?

Which of these is/are a common source of radiation exposure for humans?

The eruption of a volcano unearths rocks from deep within the Earth's crust. The rocks are estimated to be 9 × 10 9 years old. Which radioactive dating method/methods would give the most accurate age of the fossils? I. Uranium dating II. Carbon-14 dating III. Sodium dating

Which among the following atoms has the most stable nuclei?

The half-life of phosphorous-33 (P-33) is 25.3 days. How long will 64 g of P-33 take to decay to 1.0 g?

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

The eruption of a volcano unearths rocks from deep within the Earth's crust. The rocks are estimated to be 9 × 10 ⁹ years old. Which radioactive dating method/methods would give the most accurate age of the fossils? I. Uranium dating II. Carbon-14 dating III. Sodium dating