Question 1

The energy which holds the nucleus together is known as the ____.

Accepted Answer

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

Question 2

Which of these statements about fission is incorrect ?

Accepted Answer

A) Fission reactions release a large amount of energy. 
B) Two lighter nuclei combine to form a heavier nuclei. 
C) Fission of uranium-238 is initiated by the absorption of a neutron. 
D) Fission of uranium-238 nuclei was at the heart of the first atomic bomb. 
E) Fermi mistakenly discovered fission trying to synthesize a new element. 
A) Fission reactions release a large amount of energy. 
B) Two lighter nuclei combine to form a heavier nuclei. 
C) Fission of uranium-238 is initiated by the absorption of a neutron. 
D) Fission of uranium-238 nuclei was at the heart of the first atomic bomb. 
E) Fermi mistakenly discovered fission trying to synthesize a new element.

Question 3

What percentage of a radioactive sample will remain after three half-lives?

Accepted Answer

A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 0% 
A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 0%

Question 4

Which particle completes this equation?
​
  → ____ +

Accepted Answer

A) Alpha particle 
B) Beta particle 
C) Gamma particle 
D) A positron 
E) Proton 
A) Alpha particle 
B) Beta particle 
C) Gamma particle 
D) A positron 
E) Proton

Question 5

Radon-222 has a half-life of 3.82 days. How many alpha emissions are produced when a 10 g sample of radon-222 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 6

Which of these scientists is 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 7

Which of these best describes the self-sustaining process of fission with a critical mass of uranium-238?

Accepted Answer

A) Binding energy 
B) Chain reaction 
C) Alpha emission 
D) Gamma radiation 
E) Radioactivity 
A) Binding energy 
B) Chain reaction 
C) Alpha emission 
D) Gamma radiation 
E) Radioactivity

Question 8

Instantaneous exposure to radiation at a dose of ____ or greater is most likely 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 9

Which one of these is a major problem for controlled energy generation by fission?

Accepted Answer

A) Air pollution 
B) Acid rain 
C) Greenhouse gases n 
D) Waste disposal 
E) Low energy yield per pound 
A) Air pollution 
B) Acid rain 
C) Greenhouse gases n 
D) Waste disposal 
E) Low energy yield per pound

Question 10

What percentage of a radioactive sample will remain after two half-lives?

Accepted Answer

A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 0% 
A) 50% 
B) 25% 
C) 12.5% 
D) 6.25% 
E) 0%

Question 11

The half-life of protactinium-231 is 3.25 × 104 years. How long will it take for 10.4 grams of Pa-231 to decay to 2.6 grams?

Accepted Answer

A) 8.1 × 106 years 
B) 4.0 × 105 years 
C) 1.3 × 105 years 
D) 6.5 × 104 years 
E) 1.5 × 104 years 
A) 8.1 × 106 years 
B) 4.0 × 105 years 
C) 1.3 × 105 years 
D) 6.5 × 104 years 
E) 1.5 × 104 years

Question 12

Which of these equations explains the reason 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 13

Which of these types of radioactive decay 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 14

Which of these is the correct representation of a beta particle?

Accepted Answer

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

Question 15

How many half-lives has a fossilized tree undergone if it contains 12.5% of its original carbon-14?

Accepted Answer

A) 1\4 
B) 2 
C) 3 
D) 4 
E) 16 
A) 1\4 
B) 2 
C) 3 
D) 4 
E) 16

Question 16

How many years old is a fossilized tree if it contains 25% of its original carbon-14? (half-life of carbon-14 = 5,730 years)

Accepted Answer

A) 1,433 
B) 5,730 
C) 11,460 
D) 17,190 
E) 22,920 
A) 1,433 
B) 5,730 
C) 11,460 
D) 17,190 
E) 22,920

Question 17

Nitrogen-13 has a half-life of 10 minutes. How much 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 18

A radioactive decay series will continue until ________.

Accepted Answer

A) the substance disintegrates into nothing but radioactive decay particles. 
B) a stable nucleus is produced. 
C) the same number of alpha and beta emissions have taken place. 
D) none of the above 
A) the substance disintegrates into nothing but radioactive decay particles. 
B) a stable nucleus is produced. 
C) the same number of alpha and beta emissions have taken place. 
D) none of the above

Question 19

Which of these is a common source of human radiation exposure?

Accepted Answer

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

Question 20

Which of these medical application of nuclear chemistry used in the treatment of cancerous tumors?

Accepted Answer

A) Tracers 
B) Fission 
C) Chemotherapy 
D) Radiation therapy 
E) Mass defect 
A) Tracers 
B) Fission 
C) Chemotherapy 
D) Radiation therapy 
E) Mass defect

The energy which holds the nucleus together is known as the ____.

Which of these statements about fission is incorrect ?

What percentage of a radioactive sample will remain after three half-lives?

Which particle completes this equation? → ____ +

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

Which of these scientists is did not participate in early research surrounding fission reactions?

Which of these best describes the self-sustaining process of fission with a critical mass of uranium-238?

Instantaneous exposure to radiation at a dose of ____ or greater is most likely lead to radiation sickness.

Which one of these is a major problem for controlled energy generation by fission?

What percentage of a radioactive sample will remain after two half-lives?

The half-life of protactinium-231 is 3.25 × 10⁴ years. How long will it take for 10.4 grams of Pa-231 to decay to 2.6 grams?

Which of these equations explains the reason for mass defect?

Which of these types of radioactive decay does not produce an atom of a different element?

Which of these is the correct representation of a beta particle?

How many half-lives has a fossilized tree undergone if it contains 12.5% of its original carbon-14?

How many years old is a fossilized tree if it contains 25% of its original carbon-14? (half-life of carbon-14 = 5,730 years)

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

A radioactive decay series will continue until ________.

Which of these is a common source of human radiation exposure?

Which of these medical application of nuclear chemistry used in the treatment of cancerous tumors?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

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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

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Exam 8: Nuclear Chemistry

The energy which holds the nucleus together is known as the ____.

Which of these statements about fission is incorrect ?

What percentage of a radioactive sample will remain after three half-lives?

Which particle completes this equation? ​ → ____ +

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

Which of these scientists is did not participate in early research surrounding fission reactions?

Which of these best describes the self-sustaining process of fission with a critical mass of uranium-238?

Instantaneous exposure to radiation at a dose of ____ or greater is most likely lead to radiation sickness.

Which one of these is a major problem for controlled energy generation by fission?

What percentage of a radioactive sample will remain after two half-lives?

The half-life of protactinium-231 is 3.25 × 104 years. How long will it take for 10.4 grams of Pa-231 to decay to 2.6 grams?

Which of these equations explains the reason for mass defect?

Which of these types of radioactive decay does not produce an atom of a different element?

Which of these is the correct representation of a beta particle?

How many half-lives has a fossilized tree undergone if it contains 12.5% of its original carbon-14?

How many years old is a fossilized tree if it contains 25% of its original carbon-14? (half-life of carbon-14 = 5,730 years)

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

A radioactive decay series will continue until ________.

Which of these is a common source of human radiation exposure?

Which of these medical application of nuclear chemistry used in the treatment of cancerous tumors?

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

Which particle completes this equation? → ____ +

The half-life of protactinium-231 is 3.25 × 10⁴ years. How long will it take for 10.4 grams of Pa-231 to decay to 2.6 grams?