Question 1

Mass defect is the mass lost when

Accepted Answer

A) an atom is formed from individual protons,neutrons,and electrons. 
B) a nucleus is formed from individual protons and neutrons. 
C) electrons are removed from an atom. 
D) electrons are added to an atom. 
A) an atom is formed from individual protons,neutrons,and electrons. 
B) a nucleus is formed from individual protons and neutrons. 
C) electrons are removed from an atom. 
D) electrons are added to an atom.

Question 2

Relative to the amount of energy released in a typical chemical reaction,the amount of energy released in a typical fission reaction is about

Accepted Answer

A) the same. 
B) 1/2 times greater. 
C) 108 times greater 
D) 107 times greater 
A) the same. 
B) 1/2 times greater. 
C) 108 times greater 
D) 107 times greater

Question 3

Oxygen-16 (15.994915 amu)is synthesized in the sun by fusion of 12C (12.000000 amu)and 4He (4.00260 amu).How much energy is released in this nuclear reaction?

Accepted Answer

A) 2.48 × 103 kJ/mol 
B) 2.30 × 106 kJ/mol 
C) 6.92 × 108 kJ/mol 
D) 7.20 × 1011 kJ/mol 
A) 2.48 × 103 kJ/mol 
B) 2.30 × 106 kJ/mol 
C) 6.92 × 108 kJ/mol 
D) 7.20 × 1011 kJ/mol

Question 4

A beta particle is

Accepted Answer

A)   
E. 
B)   
E. 
C)   
P. 
D)   
He. 
A)   
E. 
B)   
E. 
C)   
P. 
D)   
He.

Question 5

The nuclear transmutation reaction that leads to the synthesis of plutonium-241 is shown below.What is the identity of the α-particle bombardment target in this reaction? ? +   He →   Pu +   n

Accepted Answer

A)   
U 
B)   
U 
C)   
Cm 
D)   
Cm 
A)   
U 
B)   
U 
C)   
Cm 
D)   
Cm

Question 6

The number of nucleons in an atom or ion is the same as the

Accepted Answer

A) atomic number. 
B) charge on the atom or ion. 
C) mass number. 
D) none of these 
A) atomic number. 
B) charge on the atom or ion. 
C) mass number. 
D) none of these

Question 7

Which of the following statements about electron capture is false?

Accepted Answer

A) The electron is used to convert a proton to a neutron. 
B) The electron involved is most likely an outer shell valence electron. 
C) In electron capture decay,the atomic number decreases by one. 
D) In electron capture decay,the mass number remains unchanged. 
A) The electron is used to convert a proton to a neutron. 
B) The electron involved is most likely an outer shell valence electron. 
C) In electron capture decay,the atomic number decreases by one. 
D) In electron capture decay,the mass number remains unchanged.

Question 8

Which of the following statements is not correct when balancing a nuclear equation? I.The mass numbers must be conserved on both sides of the reaction arrow.
II.The ionic charges must be conserved on both sides of the reaction arrow.
III.The atomic numbers must be conserved on both sides of the reaction arrow.
IV.The elements must be the same on both sides of the reaction arrow.

Accepted Answer

A) II only 
B) II and III 
C) I and III 
D) II and IV 
A) II only 
B) II and III 
C) I and III 
D) II and IV

Question 9

The reaction below releases ________ kJ/mol.The atomic masses are 3He (3.0160),1H (1.0078),4He (4.0026),0e (0.0005486).   He +   H →   He +   e

Accepted Answer

Question 10

Which one of the following instruments would be the least suitable for detecting particles given off in radioactive decay?

Accepted Answer

A) electron microsope 
B) Geiger counter 
C) photographic film 
D) scintillation counter 
A) electron microsope 
B) Geiger counter 
C) photographic film 
D) scintillation counter

Question 11

A few sheets of ordinary paper can form an effective shield against what type of radiation?

Accepted Answer

A) alpha particles 
B) cosmic rays 
C) gamma rays 
D) neutrons 
A) alpha particles 
B) cosmic rays 
C) gamma rays 
D) neutrons

Question 12

Tell the type of decay process occurring in the following nuclear reaction.

Accepted Answer

A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission 
A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission

Question 13

Which is the only element that contains more protons than neutrons in its most abundant stable isotope?

Accepted Answer

A) lithium 
B) nitrogen 
C) hydrogen 
D) copper 
A) lithium 
B) nitrogen 
C) hydrogen 
D) copper

Question 14

The first transuranium element was synthesized by bombarding   U with neutrons.After capturing one neutron,the resulting nuclide was unstable and decayed by beta emission.What was the product of these two nuclear reactions?

Accepted Answer

A)   
Np 
B)   
Pa 
C)   
Th 
D)   
U 
A)   
Np 
B)   
Pa 
C)   
Th 
D)   
U

Question 15

Positron emission changes the atomic number of an element by

Accepted Answer

A) -2. 
B) -1. 
C) +1. 
D) +2. 
A) -2. 
B) -1. 
C) +1. 
D) +2.

Question 16

Ionizing radiation having the lowest energy is exhibited by

Accepted Answer

A) α particles. 
B) β particles. 
C) γ rays. 
D) X-rays. 
A) α particles. 
B) β particles. 
C) γ rays. 
D) X-rays.

Mass defect is the mass lost when

Relative to the amount of energy released in a typical chemical reaction,the amount of energy released in a typical fission reaction is about

Oxygen-16 (15.994915 amu)is synthesized in the sun by fusion of ¹²C (12.000000 amu)and ⁴He (4.00260 amu).How much energy is released in this nuclear reaction?

A beta particle is

The nuclear transmutation reaction that leads to the synthesis of plutonium-241 is shown below.What is the identity of the α-particle bombardment target in this reaction? ? + He → Pu + n

The number of nucleons in an atom or ion is the same as the

Which of the following statements about electron capture is false?

The reaction below releases ________ kJ/mol.The atomic masses are ³He (3.0160),¹H (1.0078),⁴He (4.0026),⁰e (0.0005486). He + H → He + e

Which one of the following instruments would be the least suitable for detecting particles given off in radioactive decay?

A few sheets of ordinary paper can form an effective shield against what type of radiation?

Tell the type of decay process occurring in the following nuclear reaction.

Which is the only element that contains more protons than neutrons in its most abundant stable isotope?

The first transuranium element was synthesized by bombarding U with neutrons.After capturing one neutron,the resulting nuclide was unstable and decayed by beta emission.What was the product of these two nuclear reactions?

Positron emission changes the atomic number of an element by

Ionizing radiation having the lowest energy is exhibited by

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

Exam 19: Nuclear Chemistry

Mass defect is the mass lost when

Relative to the amount of energy released in a typical chemical reaction,the amount of energy released in a typical fission reaction is about

Oxygen-16 (15.994915 amu)is synthesized in the sun by fusion of 12C (12.000000 amu)and 4He (4.00260 amu).How much energy is released in this nuclear reaction?

A beta particle is

The nuclear transmutation reaction that leads to the synthesis of plutonium-241 is shown below.What is the identity of the α-particle bombardment target in this reaction? ? + He → Pu + n

The number of nucleons in an atom or ion is the same as the

Which of the following statements about electron capture is false?

The reaction below releases ________ kJ/mol.The atomic masses are 3He (3.0160),1H (1.0078),4He (4.0026),0e (0.0005486). He + H → He + e

Which one of the following instruments would be the least suitable for detecting particles given off in radioactive decay?

A few sheets of ordinary paper can form an effective shield against what type of radiation?

Tell the type of decay process occurring in the following nuclear reaction.

Which is the only element that contains more protons than neutrons in its most abundant stable isotope?

The first transuranium element was synthesized by bombarding U with neutrons.After capturing one neutron,the resulting nuclide was unstable and decayed by beta emission.What was the product of these two nuclear reactions?

Positron emission changes the atomic number of an element by

Ionizing radiation having the lowest energy is exhibited by

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

Oxygen-16 (15.994915 amu)is synthesized in the sun by fusion of ¹²C (12.000000 amu)and ⁴He (4.00260 amu).How much energy is released in this nuclear reaction?

The reaction below releases ________ kJ/mol.The atomic masses are ³He (3.0160),¹H (1.0078),⁴He (4.0026),⁰e (0.0005486). He + H → He + e