Question 1

In the equation below,what particle or type of radiation needs to be included to balance the equation? 208Pb → ? + 204Hg

Accepted Answer

A)  Gamma particle
B)  Alpha particle
C)  Proton
D)  Beta particle
E)  PositronF) A) and E)
G) D) and E)

Question 2

Which of the following is used to image the brain?

Accepted Answer

A)  (18O) 
B)  (131I) 
C)  (123I) 
D)  (24Na) 
E)  (99Tc) F) B) and D)
G) A) and B)

Question 3

Present-day plant life has a carbon-14 decay rate of 16 disintegrations per minute (dpm) per gram of carbon.If a contemporary wooden chair were preserved for the next 3900 years,what 14C decay rate should be expected from the wood used to make the chair? (t1/2 = 5730 yr)

Accepted Answer

A)  26 dpm
B)  12 dpm
C)  11 dpm
D)  10 dpm
E)  8 dpmF) A) and B)
G) A) and C)

Question 4

The energy released by the sun is the result of

Accepted Answer

A)  natural radioactivity.
B)  nuclear fusion.
C)  combustion of hydrogen.
D)  photosynthesis.
E)  nuclear fission.F) A) and B)
G) D) and E)

Question 5

The only stable isotope of aluminum is aluminum-27.What type of radioactive decay should be expected from  ?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and D)
G) A) and E)

Question 6

A self-sustaining sequence of nuclear fission reactions is called a ___________ _________ _________.

Accepted Answer

nuclear ch...

Question 7

A radioisotope decays,producing an alpha particle and Th-234.The original radioisotope must have been an atom of ____.

Accepted Answer

A)  Pa
B)  Bi
C)  U
D)  Ra
E)  RbF) A) and D)
G) B) and D)

Question 8

Polonium-208 is an alpha emitter with a half-life of 2.90 years.How many milligrams of polonium from an original sample of 2.00 mg will remain after 8.00 years?

Accepted Answer

A)  0.147 mg
B)  0.296 mg
C)  0.725 mg
D)  6.77 mg
E)  1.90 mgF) A) and B)
G) A) and E)

Question 9

In the following reaction,identify X.

Accepted Answer

A)  7β
B)  3α
C)  4n
D)   
E)  15pF) A) and C)
G) A) and E)

Question 10

In passing through matter,alpha particles lose energy chiefly by causing

Accepted Answer

A)  fermentation.
B)  neutralization.
C)  ionization.
D)  condensation.
E)  carbonation.F) D) and E)
G) All of the above

Question 11

If a captured electron combines with a proton in the nucleus to form a neutron,what happens to the atomic number and the mass number?

Accepted Answer

The atomic number de...

Question 12

A ___________ _____________ uses electric and magnetic fields to increase the kinetic energy of charged species so that a reaction will occur.

Accepted Answer

particle a...

Question 13

The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 109 yr.A sample of moon rock was found to contain 78 argon-40 atoms for every 22 potassium-40 atoms.The age of the rock is

Accepted Answer

A)  8.1 × 10-10 yr.
B)  2.4 × 109 yr.
C)  2.8 × 109 yr.
D)  4.6 × 109 yr.
E)  6.8 × 109 yrF) A) and E)
G) B) and D)

Question 14

Exposure to 10 nCi for 10 minutes is more hazardous for a child than for an adult because

Accepted Answer

A)  the child's cells are dividing more rapidly than the adult's and are,therefore,more susceptible to the radiation.
B)  the child's smaller body size makes the effective dose larger for the child than for the adult.
C)  the child's immune system is not developed well enough to resist damage.
D)  the child's skin is not as thick as an adult's and cannot block as much radiation.
E)  None of these reasons is correct.F) A) and C)
G) A) and B)

Question 15

Which of the following is used to test the activity of the thyroid?

Accepted Answer

A)  (18O) 
B)  (131I) 
C)  (123I) 
D)  (24Na) 
E)  (99Tc) F) A) and D)
G) A) and C)

Question 16

The carbon-14 activity of some ancient Indian corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon.If present-day plant life has 16 dpm per gram of carbon,how old is the Indian corn? (t1/2 = 5730 yr)

Accepted Answer

A)  6800 yr
B)  2500 yr
C)  4700 yr
D)  10,000 yr
E)  7200 yrF) D) and E)
G) A) and C)

Question 17

Electron capture is the capture of an electron-usually a 1s electron-by the _________________.

Accepted Answer

The answer of Electron capture is the capture of an...

Question 18

What material is ionized by radiation in a Geiger counter?

Accepted Answer

A)  Helium gas
B)  Neon gas
C)  Liquid water
D)  Argon gas
E)  Radon gasF) C) and E)
G) B) and D)

Question 19

What causes the radiation damage to matter when gamma rays damages it?

Accepted Answer

A)  Another isotope
B)  Oxidation
C)  Reduction
D)  Free radicals and ions
E)  CorrosionF) A) and C)
G) B) and E)

Question 20

A beta particle is a proton.

Accepted Answer

A) True 
 B)False

Exam 20: Nuclear Chemistry

Electron capture is the capture of an electron-usually a 1s electron-by the _________________.

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Which of the following is used to image the brain?

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In the following reaction,identify X.

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A beta particle is a proton.

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A self-sustaining sequence of nuclear fission reactions is called a ___________ _________ _________.

Correct Answerverifiednuclear ch...View AnswerShow Answer

A radioisotope decays,producing an alpha particle and Th-234.The original radioisotope must have been an atom of ____.

Correct AnswerverifiedShow Answer

What material is ionized by radiation in a Geiger counter?

Correct AnswerverifiedShow Answer

In the equation below,what particle or type of radiation needs to be included to balance the equation? 208Pb → ? + 204Hg

Correct AnswerverifiedShow Answer

The energy released by the sun is the result of

Correct AnswerverifiedShow Answer

The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 109 yr.A sample of moon rock was found to contain 78 argon-40 atoms for every 22 potassium-40 atoms.The age of the rock is

Correct AnswerverifiedShow Answer

Present-day plant life has a carbon-14 decay rate of 16 disintegrations per minute (dpm) per gram of carbon.If a contemporary wooden chair were preserved for the next 3900 years,what 14C decay rate should be expected from the wood used to make the chair? (t1/2 = 5730 yr)

Correct AnswerverifiedShow Answer

If a captured electron combines with a proton in the nucleus to form a neutron,what happens to the atomic number and the mass number?

Correct AnswerverifiedThe atomic number de...View AnswerShow Answer

In passing through matter,alpha particles lose energy chiefly by causing

Correct AnswerverifiedShow Answer

Exposure to 10 nCi for 10 minutes is more hazardous for a child than for an adult because

Correct AnswerverifiedShow Answer

The only stable isotope of aluminum is aluminum-27.What type of radioactive decay should be expected from ?

Correct AnswerverifiedShow Answer

Polonium-208 is an alpha emitter with a half-life of 2.90 years.How many milligrams of polonium from an original sample of 2.00 mg will remain after 8.00 years?

Correct AnswerverifiedShow Answer

Which of the following is used to test the activity of the thyroid?

Correct AnswerverifiedShow Answer

What causes the radiation damage to matter when gamma rays damages it?

Correct AnswerverifiedShow Answer

The carbon-14 activity of some ancient Indian corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon.If present-day plant life has 16 dpm per gram of carbon,how old is the Indian corn? (t1/2 = 5730 yr)

Correct AnswerverifiedShow Answer

A ___________ _____________ uses electric and magnetic fields to increase the kinetic energy of charged species so that a reaction will occur.

Correct Answerverifiedparticle a...View AnswerShow Answer

Correct Answer
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A self-sustaining sequence of nuclear fission reactions is called a _______ _ _____.

Correct Answer
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nuclear ch...
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In the equation below,what particle or type of radiation needs to be included to balance the equation? ²⁰⁸Pb → ? + ²⁰⁴Hg

Correct Answer
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Correct Answer
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The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 10⁹ yr.A sample of moon rock was found to contain 78 argon-40 atoms for every 22 potassium-40 atoms.The age of the rock is

Correct Answer
verified

Present-day plant life has a carbon-14 decay rate of 16 disintegrations per minute (dpm) per gram of carbon.If a contemporary wooden chair were preserved for the next 3900 years,what ¹⁴C decay rate should be expected from the wood used to make the chair? (t_1/2 = 5730 yr)

Correct Answer
verified

Correct Answer
verified
The atomic number de...
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The carbon-14 activity of some ancient Indian corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon.If present-day plant life has 16 dpm per gram of carbon,how old is the Indian corn? (t_1/2 = 5730 yr)

Correct Answer
verified

A _ ___ uses electric and magnetic fields to increase the kinetic energy of charged species so that a reaction will occur.

Correct Answer
verified
particle a...
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