Question 1

Match the following.
-neutron

Accepted Answer

A)   e 
B)   p 
C)   He 
D)   g 
E)   n
F)  e 
A)   e 
B)   p 
C)   He 
D)   g 
E)   n
F)  e

Question 2

Describe what changes occur in the atomic nucleus during positron emission.

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 is unchanged and the atomic number increases. 
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 is unchanged and the atomic number increases. 
E)  The mass number and atomic number do not change.

Question 3

The combination of two light nuclei to form a heavier nuclei is called ________.

Accepted Answer

A)  radioactive cleavage 
B)  nuclear fission 
C)  nuclear fusion 
D)  radioactive merge 
E)  recombination 
A)  radioactive cleavage 
B)  nuclear fission 
C)  nuclear fusion 
D)  radioactive merge 
E)  recombination

Question 4

Why is an alpha emitter much more harmful if it is ingested than when applied to the skin?

Accepted Answer

Alpha emitters have the highest ionizing

Question 5

The number of nucleons in a   Co nucleus is ________.

Accepted Answer

A)  27 
B)  33 
C)  60 
D)  87 
A)  27 
B)  33 
C)  60 
D)  87

Question 6

Identify the symptom experienced from acute radiation exposure.

Accepted Answer

A)  increased ability to absorb nutrients 
B)  sneezing 
C)  death 
D)  decreased risk of cancer 
E)  weaker immune system 
A)  increased ability to absorb nutrients 
B)  sneezing 
C)  death 
D)  decreased risk of cancer 
E)  weaker immune system

Question 7

Write a nuclear equation to describe the neutron-induced fission of U-235 to form Xe-134 and Sr-100. Determine how many neutrons are produced in the reaction.

Accepted Answer

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

Question 8

Identify the nuclide that has the longest half-life.

Accepted Answer

A)    U 
B)    C 
C)    Rn 
D)    Th 
E)    Th 
A)    U 
B)    C 
C)    Rn 
D)    Th 
E)    Th

Question 9

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

Accepted Answer

A)    e 
B)    n 
C)    e 
D)    H 
E)    g 
A)    e 
B)    n 
C)    e 
D)    H 
E)    g

Question 10

Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 u. A proton has a mass of 1.00728 u, a neutron has a mass of 1.008665 u, and 1 u is equivalent to 931 MeV of energy.

Accepted Answer

A)  8.84 MeV 
B)  128 MeV 
C)  138 MeV 
D)  78.1 MeV 
E)  38.2 MeV 
A)  8.84 MeV 
B)  128 MeV 
C)  138 MeV 
D)  78.1 MeV 
E)  38.2 MeV

Question 11

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

Accepted Answer

A)    Po 
B)    Ra 
C)    Th 
D)    Rn 
E)    At 
A)    Po 
B)    Ra 
C)    Th 
D)    Rn 
E)    At

Question 12

Identify the missing particle in the following nuclear equation: 
  U →   Sr + ? + 2   n + 4   g

Accepted Answer

A)    Te 
B)    Xe 
C)    Xe 
D)    Te 
E)    Sr 
A)    Te 
B)    Xe 
C)    Xe 
D)    Te 
E)    Sr

Question 13

Describe what changes occur in the atomic nucleus during beta decay.

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 is unchanged and the atomic number increases. 
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 is unchanged and the atomic number increases. 
E)  The mass number and atomic number do not change.

Question 14

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

Accepted Answer

A)    Ru 
B)    Rh 
C)    Nb 
D)    Mo 
E)    Ru 
A)    Ru 
B)    Rh 
C)    Nb 
D)    Mo 
E)    Ru

Question 15

Write a nuclear equation for the alpha decay of   Pu.

Accepted Answer

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

Question 16

What is the mass defect?

Accepted Answer

The mass of a nucleus is less than the s

Question 17

Identify the missing particle in the following nuclear equation: 
  U → ? +   He + 2   g

Accepted Answer

A)    Th 
B)    Ra 
C)    Pu 
D)    Th 
E)    Ra 
A)    Th 
B)    Ra 
C)    Pu 
D)    Th 
E)    Ra

Question 18

Determine the identity of the daughter nuclide from the positron emission of   N.

Accepted Answer

A)    O 
B)    C 
C)    O 
D)    B 
E)    F 
A)    O 
B)    C 
C)    O 
D)    B 
E)    F

Question 19

The age of an ancient tree trunk is estimated using radiocarbon dating. If the trunk has a C-14 decay rate that is 34% of what it is in living plants, how old is the trunk? The half-life of C-14 is 5730 years.

Accepted Answer

A)  2.92 × 104 years 
B)  1.94 × 104 years 
C)  8.92 × 103 years 
D)  5.31 × 103 years 
E)  1.74 × 102 years 
A)  2.92 × 104 years 
B)  1.94 × 104 years 
C)  8.92 × 103 years 
D)  5.31 × 103 years 
E)  1.74 × 102 years

Question 20

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

Exam 19: Radioactivity and Nuclear Chemistry

Match the following. -neutron

Describe what changes occur in the atomic nucleus during positron emission.

The combination of two light nuclei to form a heavier nuclei is called ________.

Why is an alpha emitter much more harmful if it is ingested than when applied to the skin?

The number of nucleons in a Co nucleus is ________.

Identify the symptom experienced from acute radiation exposure.

Write a nuclear equation to describe the neutron-induced fission of U-235 to form Xe-134 and Sr-100. Determine how many neutrons are produced in the reaction.

Identify the nuclide that has the longest half-life.

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

Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 u. A proton has a mass of 1.00728 u, a neutron has a mass of 1.008665 u, and 1 u is equivalent to 931 MeV of energy.

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

Identify the missing particle in the following nuclear equation: U → Sr + ? + 2 n + 4 g

Describe what changes occur in the atomic nucleus during beta decay.

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

Write a nuclear equation for the alpha decay of Pu.

What is the mass defect?

Identify the missing particle in the following nuclear equation: U → ? + He + 2 g

Determine the identity of the daughter nuclide from the positron emission of N.

The age of an ancient tree trunk is estimated using radiocarbon dating. If the trunk has a C-14 decay rate that is 34% of what it is in living plants, how old is the trunk? The half-life of C-14 is 5730 years.

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

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

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, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

The number of nucleons in a Conucleusis ________.