Question 1

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

Accepted Answer

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

Question 2

Which radiation has the highest penetrating power?

Accepted Answer

A) alpha rays 
B) beta rays 
C) gamma rays 
D) positron emission 
E) electron capture 
A) alpha rays 
B) beta rays 
C) gamma rays 
D) positron emission 
E) electron capture

Question 3

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 4

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 5

The following reaction represents what nuclear process?   Pb →   e +   Bi

Accepted Answer

A) alpha emission 
B) gamma emission 
C) electron capture 
D) neutron bombardment 
E) beta emission 
A) alpha emission 
B) gamma emission 
C) electron capture 
D) neutron bombardment 
E) beta emission

Question 6

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 7

Identify the radioactive green light that glows in the dark.

Accepted Answer

A) phenolphthalein 
B) radioactivity 
C) phosphorescence 
D) desensitivity 
E) neon 
A) phenolphthalein 
B) radioactivity 
C) phosphorescence 
D) desensitivity 
E) neon

Question 8

Identify the missing particle in the following nuclear equation:   Pb →   e + ?

Accepted Answer

A)    Bi 
B)    Tl 
C)    Pb 
D)    Pb 
E)    Tl 
A)    Bi 
B)    Tl 
C)    Pb 
D)    Pb 
E)    Tl

Question 9

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. After 6.00 y., the activity of the sample declines to 2755 disintegrations per second. The half-life of curium-243 is ________ y.

Accepted Answer

A) 4.99 
B) 32.6 
C) 7.21 
D) 0.765 
E) 22.6 
A) 4.99 
B) 32.6 
C) 7.21 
D) 0.765 
E) 22.6

Question 10

Which nuclide below is most likely to decay by electron capture?

Accepted Answer

A)    Re 
B)    Re 
C)    Re 
D)    Re 
A)    Re 
B)    Re 
C)    Re 
D)    Re

Question 11

Atoms with Z > ________ are radioactive and decay in one or more steps involving mostly alpha and beta decay.

Accepted Answer

A) 60 
B) 100 
C) 83 
D) 160 
E) 40 
A) 60 
B) 100 
C) 83 
D) 160 
E) 40

Question 12

Define chain reaction in terms of the fission of uranium nucleus.

Accepted Answer

Neutrons, produced b

Question 13

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

Accepted Answer

A)    Pt 
B)    Tl 
C)    Hg 
D)    Bi 
E)    Pb 
A)    Pt 
B)    Tl 
C)    Hg 
D)    Bi 
E)    Pb

Question 14

Write the nuclear equation for the alpha decay of   Th.

Accepted Answer

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

Question 15

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 16

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 17

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 18

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

Accepted Answer

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

Question 19

Determine the binding energy per nucleon of a Mg-24 nucleus. The Mg-24 nucleus has a mass of 24.30506. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.

Accepted Answer

A) 0.3050 MeV 
B) 8.83 MeV 
C) 0.113 MeV 
D) 106 MeV 
E) 4.41 MeV 
A) 0.3050 MeV 
B) 8.83 MeV 
C) 0.113 MeV 
D) 106 MeV 
E) 4.41 MeV

Question 20

Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.

Accepted Answer

A) 277 hours 
B) 455 hour 
C) 561 hours 
D) 639 hours 
E) 748 hours 
A) 277 hours 
B) 455 hour 
C) 561 hours 
D) 639 hours 
E) 748 hours

Exam 19: Radioactivity and Nuclear Chemistry

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

Which radiation has the highest penetrating power?

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

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

The following reaction represents what nuclear process? Pb → e + Bi

The number of nucleons in a Co nucleus is

Identify the radioactive green light that glows in the dark.

Identify the missing particle in the following nuclear equation: Pb → e + ?

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. After 6.00 y., the activity of the sample declines to 2755 disintegrations per second. The half-life of curium-243 is ________ y.

Which nuclide below is most likely to decay by electron capture?

Atoms with Z > ________ are radioactive and decay in one or more steps involving mostly alpha and beta decay.

Define chain reaction in terms of the fission of uranium nucleus.

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

Write the nuclear equation for the alpha decay of Th.

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

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

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

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

Determine the binding energy per nucleon of a Mg-24 nucleus. The Mg-24 nucleus has a mass of 24.30506. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.

Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.

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 Metallury

Transition Metals and Coordination Compounds

Filters

The number of nucleons in a Conucleusis