Question 1

The nuclide As-76 has a half-life of 26.0 hours.If a sample of As-76 weighs 344 g,what mass of As-76 remains after 538 minutes?

Accepted Answer

A)  67.8 g 
B)  271 g 
C)  144 g 
D)  437 g 
E)  251 g 
A)  67.8 g 
B)  271 g 
C)  144 g 
D)  437 g 
E)  251 g

Question 2

Write a nuclear equation to describe the spontaneous fission of   Am to form I-134 and Mo-107.Determine how many neutrons are produced in the reaction.

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 3

Determine the identity of the daughter nuclide from the alpha decay of   Po.

Accepted Answer

A)    Rn 
B)    Pb 
C)    Ra 
D)    Hg 
E)    At 
A)    Rn 
B)    Pb 
C)    Ra 
D)    Hg 
E)    At

Question 4

What is the "mass defect"?

Accepted Answer

The mass of a nucleus is less than the s

Question 5

Identify a nuclide.

Accepted Answer

A)  a particular radical 
B)  a particular cation 
C)  a particular atom 
D)  a particular isotope 
E)  a particular anion 
A)  a particular radical 
B)  a particular cation 
C)  a particular atom 
D)  a particular isotope 
E)  a particular anion

Question 6

Write a nuclear equation for the alpha decay of   U.

Accepted Answer

A)    U →
  n +
  U 
B)    U →
  e +
  Np 
C)    U →
  He +
  Th 
D)    U →
  e +
  Pa 
E)    U →
  e +
  Pa 
A)    U →
  n +
  U 
B)    U →
  e +
  Np 
C)    U →
  He +
  Th 
D)    U →
  e +
  Pa 
E)    U →
  e +
  Pa

Question 7

Identify the common radiotracers used in the diagnosis of medical problems.

Accepted Answer

A)  fluorine-17 
B)  iodine-132 
C)  thallium-202 
D)  iron-58 
E)  iodine-131 
A)  fluorine-17 
B)  iodine-132 
C)  thallium-202 
D)  iron-58 
E)  iodine-131

Question 8

Which of the following nuclides is most likely to undergo beta decay?

Accepted Answer

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

Question 9

Identify a gamma particle.

Accepted Answer

A)    n 
B)    n 
C)    e 
D)    He 
E)    γ 
A)    n 
B)    n 
C)    e 
D)    He 
E)    γ

Question 10

Which of the following statements is TRUE?

Accepted Answer

A)  Alpha particles have the lowest penetrating power of any radioactivity. 
B)  Beta radiation has the lowest ionizing power of any radioactivity. 
C)  Beta emitters will do more damage than alpha emitters within the body. 
D)  Beta radiation has the highest ionizing power of any radioactivity. 
E)  None of the above is true. 
A)  Alpha particles have the lowest penetrating power of any radioactivity. 
B)  Beta radiation has the lowest ionizing power of any radioactivity. 
C)  Beta emitters will do more damage than alpha emitters within the body. 
D)  Beta radiation has the highest ionizing power of any radioactivity. 
E)  None of the above is true.

Question 11

Identify the symptom that is NOT from radiation exposure.

Accepted Answer

A)  measles 
B)  increased cancer risk 
C)  death 
D)  genetic effects 
E)  weaker immune systems 
A)  measles 
B)  increased cancer risk 
C)  death 
D)  genetic effects 
E)  weaker immune systems

Question 12

Which particle changes the mass of the isotope the least?

Accepted Answer

A)  alpha emission 
B)  proton capture 
C)  gamma particle 
D)  positron capture 
E)  electron capture 
A)  alpha emission 
B)  proton capture 
C)  gamma particle 
D)  positron capture 
E)  electron capture

Question 13

Describe what is meant by the term "valley of stability"?

Accepted Answer

If a plot of number of neutrons vs.numbe

Question 14

Identify the radiotracer used to for PET studies of the heart.

Accepted Answer

A)  iron-59 
B)  phosphorus-32 
C)  thallium-201 
D)  iodine-131 
E)  fluorine-18 
A)  iron-59 
B)  phosphorus-32 
C)  thallium-201 
D)  iodine-131 
E)  fluorine-18

Question 15

Give the goal of the Manhattan project.

Accepted Answer

A)  to build an hydrogen bomb 
B)  to build the first particle accelerator at Cornell 
C)  to build an atomic bomb 
D)  to build the first nuclear reactor to generate electricity for Manhattan 
E)  to set up the electrification of Manhattan using DC current 
A)  to build an hydrogen bomb 
B)  to build the first particle accelerator at Cornell 
C)  to build an atomic bomb 
D)  to build the first nuclear reactor to generate electricity for Manhattan 
E)  to set up the electrification of Manhattan using DC current

Question 16

Determine the identity of the daughter nuclide from the beta decay of   C.

Accepted Answer

A)    N 
B)    Be 
C)    N 
D)    C 
E)    B 
A)    N 
B)    Be 
C)    N 
D)    C 
E)    B

Question 17

The following reaction represents what nuclear process?   H +   H →   He +   n

Accepted Answer

A)  nuclear fusion 
B)  alpha emission 
C)  beta emission 
D)  neutron emission 
E)  neutron capture 
A)  nuclear fusion 
B)  alpha emission 
C)  beta emission 
D)  neutron emission 
E)  neutron capture

Question 18

Determine the identity of the daughter nuclide from the electron capture by   Be.

Accepted Answer

A)    C 
B)    He 
C)    B 
D)    Li 
E)    B 
A)    C 
B)    He 
C)    B 
D)    Li 
E)    B

Question 19

Identify the missing particle in the following nuclear equation:   Th →   He + ?

Accepted Answer

A)    U 
B)    Ac 
C)    Ac 
D)    Ra 
E)    Ra 
A)    U 
B)    Ac 
C)    Ac 
D)    Ra 
E)    Ra

Question 20

Describe what changes occur during electron capture.

Accepted Answer

A)  The mass number and atomic number decrease. 
B)  The mass number and atomic number increase. 
C)  The mass number is unchanged and the atomic number decreases. 
D)  The mass number decreases and the atomic number is unchanged. 
E)  The mass number and atomic number do not change. 
A)  The mass number and atomic number decrease. 
B)  The mass number and atomic number increase. 
C)  The mass number is unchanged and the atomic number decreases. 
D)  The mass number decreases and the atomic number is unchanged. 
E)  The mass number and atomic number do not change.

Exam 20: Radioactivity and Nuclear Chemistry

The nuclide As-76 has a half-life of 26.0 hours.If a sample of As-76 weighs 344 g,what mass of As-76 remains after 538 minutes?

Write a nuclear equation to describe the spontaneous fission of Am to form I-134 and Mo-107.Determine how many neutrons are produced in the reaction.

Determine the identity of the daughter nuclide from the alpha decay of Po.

What is the "mass defect"?

Identify a nuclide.

Write a nuclear equation for the alpha decay of U.

Identify the common radiotracers used in the diagnosis of medical problems.

Which of the following nuclides is most likely to undergo beta decay?

Identify a gamma particle.

Which of the following statements is TRUE?

Identify the symptom that is NOT from radiation exposure.

Which particle changes the mass of the isotope the least?

Describe what is meant by the term "valley of stability"?

Identify the radiotracer used to for PET studies of the heart.

Give the goal of the Manhattan project.

Determine the identity of the daughter nuclide from the beta decay of C.

The following reaction represents what nuclear process? H + H → He + n

Determine the identity of the daughter nuclide from the electron capture by Be.

Identify the missing particle in the following nuclear equation: Th → He + ?

Describe what changes occur during electron capture.

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

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