Question 1

What is the mass number of the element produced when an element with mass number A emits a positron?

Accepted Answer

A)  A __ 2 
B)  A __ 1 
C)  A 
D)  A + 1 
A)  A __ 2 
B)  A __ 1 
C)  A 
D)  A + 1

Question 2

What is the atomic number of the element produced when an element with atomic number Z undergoes electron capture?

Accepted Answer

A)  Z __ 2 
B)  Z __ 1 
C)  Z + 1 
D)  Z + 2 
A)  Z __ 2 
B)  Z __ 1 
C)  Z + 1 
D)  Z + 2

Question 3

Which of the following isotopes can be used by geologists to date rocks?

Accepted Answer

A)  C-14 
B)  I-131 
C)  Sr-90 
D)  U-238 
A)  C-14 
B)  I-131 
C)  Sr-90 
D)  U-238

Question 4

Which of the following forms of radiation is electrically neutral?

Accepted Answer

A)  α 
B)    
C)    
D)  none of these 
A)  α 
B)    
C)    
D)  none of these

Question 5

Transmutation is caused by which of the following radioactive processes?

Accepted Answer

A)  α emission 
B)  β emission 
C)  both a and b 
D)  neither a nor b 
A)  α emission 
B)  β emission 
C)  both a and b 
D)  neither a nor b

Question 6

With which part of the atom is radioactivity associated?

Accepted Answer

A)  the core electrons 
B)  the entire atom 
C)  the nucleus 
D)  the valence electrons 
A)  the core electrons 
B)  the entire atom 
C)  the nucleus 
D)  the valence electrons

Question 7

Which of the following forms of radiation involves the heaviest particles?

Accepted Answer

A)  α 
B)    
C)    
D)  positron 
A)  α 
B)    
C)    
D)  positron

Question 8

Which of the following is the name given to a packet of electromagnetic radiation?

Accepted Answer

A)  phonon 
B)  phonton 
C)  phason 
D)  photon 
A)  phonon 
B)  phonton 
C)  phason 
D)  photon

Question 9

How many naturally occurring isotopes have been identified?

Accepted Answer

A)  92 
B)  118 
C)  fewer than 300 
D)  more than 300 
A)  92 
B)  118 
C)  fewer than 300 
D)  more than 300

Question 10

Different isotopes are useful in different dating processes. Suppose we wished to determine the age of an object which we suspect to be approximately 100 years old. An isotope with which of the following half-lives would be most appropriate for this project?

Accepted Answer

A)  5 years 
B)  50 years 
C)  500 years 
D)  5,000 years 
A)  5 years 
B)  50 years 
C)  500 years 
D)  5,000 years

Question 11

Which of the following gives the correct order of the penetrating power of radiation?

Accepted Answer

A)  α > β > γ 
B)  β > α > γ 
C)  β > γ > α 
D)  γ > β > α 
A)  α > β > γ 
B)  β > α > γ 
C)  β > γ > α 
D)  γ > β > α

Question 12

Which of the following elements might be the fuel in a fusion reaction?

Accepted Answer

A)  helium 
B)  hydrogen 
C)  iron 
D)  uranium 
A)  helium 
B)  hydrogen 
C)  iron 
D)  uranium

Question 13

What percentage of a radioactive sample remains after 4 half-lives?

Accepted Answer

A)  25.0% 
B)  12.5% 
C)  6.25% 
D)  3.13% 
A)  25.0% 
B)  12.5% 
C)  6.25% 
D)  3.13%

Question 14

Transmutation is caused by which of the following radioactive processes?

Accepted Answer

A)  β emission 
B)  γ emission 
C)  both a and b 
D)  neither a nor b 
A)  β emission 
B)  γ emission 
C)  both a and b 
D)  neither a nor b

Question 15

Which of the following will have activity of 1.0 Ci?

Accepted Answer

A)  1.0 g of naturally occurring Ra 
B)  1.0 kg of naturally occurring Ra 
C)  1.0 g of pure 286Ra 
D)  1.0 kg pure 286Ra 
A)  1.0 g of naturally occurring Ra 
B)  1.0 kg of naturally occurring Ra 
C)  1.0 g of pure 286Ra 
D)  1.0 kg pure 286Ra

Question 16

Which of the following statements is true of electromagnetic radiation?

Accepted Answer

A)  All electromagnetic radiation has the same energy. 
B)  As the wavelength of the radiation increases, the energy of the radiation decreases. 
C)  As the wavelength of the radiation increases, the energy of the radiation increases. 
D)  There is no specific relationship between wavelength and energy. 
A)  All electromagnetic radiation has the same energy. 
B)  As the wavelength of the radiation increases, the energy of the radiation decreases. 
C)  As the wavelength of the radiation increases, the energy of the radiation increases. 
D)  There is no specific relationship between wavelength and energy.

Question 17

Which of the following scientists discovered X-rays?

Accepted Answer

A)  H. Becquerel 
B)  M. Curie 
C)  A. Einstein 
D)  W. Roentgen 
A)  H. Becquerel 
B)  M. Curie 
C)  A. Einstein 
D)  W. Roentgen

Question 18

Krypton-85 has a half-life of 10 years. Approximately what percentage of Kr-85 produced from the Chernobyl accident in 1986 still remains radioactive in 2010?

Accepted Answer

A)  25% 
B)  12% 
C)  6% 
D)  3% 
A)  25% 
B)  12% 
C)  6% 
D)  3%

Question 19

Which of the following radioisotopes, which is an α emitter used in the treatment of prostate cancer, is implanted in the prostate as seeds?

Accepted Answer

A)  Ac-225 
B)  Co-60 
C)  I-125 
D)  P-32 
A)  Ac-225 
B)  Co-60 
C)  I-125 
D)  P-32

Question 20

Which of our senses can we use to detect nuclear radiation?

Accepted Answer

A)  hearing 
B)  sight 
C)  taste 
D)  none 
A)  hearing 
B)  sight 
C)  taste 
D)  none

Exam 9: Nuclear Chemistry

What is the mass number of the element produced when an element with mass number A emits a positron?

What is the atomic number of the element produced when an element with atomic number Z undergoes electron capture?

Which of the following isotopes can be used by geologists to date rocks?

Which of the following forms of radiation is electrically neutral?

Transmutation is caused by which of the following radioactive processes?

With which part of the atom is radioactivity associated?

Which of the following forms of radiation involves the heaviest particles?

Which of the following is the name given to a packet of electromagnetic radiation?

How many naturally occurring isotopes have been identified?

Different isotopes are useful in different dating processes. Suppose we wished to determine the age of an object which we suspect to be approximately 100 years old. An isotope with which of the following half-lives would be most appropriate for this project?

Which of the following gives the correct order of the penetrating power of radiation?

Which of the following elements might be the fuel in a fusion reaction?

What percentage of a radioactive sample remains after 4 half-lives?

Transmutation is caused by which of the following radioactive processes?

Which of the following will have activity of 1.0 Ci?

Which of the following statements is true of electromagnetic radiation?

Which of the following scientists discovered X-rays?

Krypton-85 has a half-life of 10 years. Approximately what percentage of Kr-85 produced from the Chernobyl accident in 1986 still remains radioactive in 2010?

Which of the following radioisotopes, which is an α emitter used in the treatment of prostate cancer, is implanted in the prostate as seeds?

Which of our senses can we use to detect nuclear radiation?

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Reaction Rates and Chemical Equilibrium

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Organic Chemistry

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Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

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Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

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Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

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