Question 1

To produce maximum heat, an explosive compound should have ________ chemical bonds and decompose to molecule with ________ bonds.

Accepted Answer

The answer of To produce maximum heat, an explosive compound...

Question 2

A nonpolar bond will form between two ________ atoms of ________ electronegativity.

Accepted Answer

A) different, opposite 
B) identical, different 
C) different, different 
D) similar, different 
E) identical, equal 
A) different, opposite 
B) identical, different 
C) different, different 
D) similar, different 
E) identical, equal

Question 3

Bond enthalpy can be positive or negative.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? O Sr Na Se Br

Accepted Answer

A) Br 
B) Sr 
C) Na 
D) O, Se 
E) Sr, O, Se 
A) Br 
B) Sr 
C) Na 
D) O, Se 
E) Sr, O, Se

Question 5

The diagram below is the Born-Huber cycle for the formation of crystalline potassium fluoride.  
-Which energy change corresponds to the first ionization energy of potassium?

Accepted Answer

A) 2 
B) 5 
C) 4 
D) 3 
E) 6 
A) 2 
B) 5 
C) 4 
D) 3 
E) 6

Question 6

A valid Lewis structure of ________ cannot be drawn without violating the octet rule.

Accepted Answer

A) ClF3 
B) PCl3 
C) SO3 
D) CCl4 
E) CO2 
A) ClF3 
B) PCl3 
C) SO3 
D) CCl4 
E) CO2

Question 7

Using the table of bond dissociation energies, the ΔH for the following gas-phase reaction is ________ kJ.

Accepted Answer

A) -44 
B) 38 
C) 304 
D) 2134 
E) -38 
A) -44 
B) 38 
C) 304 
D) 2134 
E) -38

Question 8

Bond enthalpy is ________.

Accepted Answer

A) always positive 
B) always negative 
C) sometimes positive, sometimes negative 
D) always zero 
E) unpredictable 
A) always positive 
B) always negative 
C) sometimes positive, sometimes negative 
D) always zero 
E) unpredictable

Question 9

Using the table of average bond energies below, the △H for the reaction is ________ kJ. C≡O (g) + 2H2 (g) → H3C-O-H (g)
Bond: C-O C=O C≡O C-H H-H O-H
D (kJ/mol): 358 799 1072 413 436 463

Accepted Answer

A) +276 
B) -276 
C) +735 
D) -735 
E) -116 
A) +276 
B) -276 
C) +735 
D) -735 
E) -116

Question 10

For a given arrangement of ions, the lattice energy increases as ionic radius ________ and as ionic charge ________.

Accepted Answer

A) decreases, increases 
B) increases, decreases 
C) increases, increases 
D) decreases, decreases 
E) This cannot be predicted. 
A) decreases, increases 
B) increases, decreases 
C) increases, increases 
D) decreases, decreases 
E) This cannot be predicted.

Question 11

Which of the following would have to lose three electrons in order to achieve a noble gas electron configuration? Si Mg Al Cl P

Accepted Answer

A) Si, P 
B) Al 
C) P 
D) Cl 
E) Mg, Al, P 
A) Si, P 
B) Al 
C) P 
D) Cl 
E) Mg, Al, P

Question 12

The central atom in ________ does not violate the octet rule.

Accepted Answer

A) SF4 
B) KrF2 
C) CF4 
D) XeF4 
E) ICl4- 
A) SF4 
B) KrF2 
C) CF4 
D) XeF4 
E) ICl4-

Question 13

The diagram below is the Born-Huber cycle for the formation of crystalline potassium fluoride.  
-Which energy change corresponds to the electron affinity of fluorine?

Accepted Answer

A) 2 
B) 5 
C) 4 
D) 1 
E) 6 
A) 2 
B) 5 
C) 4 
D) 1 
E) 6

Question 14

Electropositivity ________ from left to right within a period and ________ from top to bottom within a group.

Accepted Answer

A) decreases, increases 
B) increases, increases 
C) increases, decreases 
D) stays the same, increases 
E) increases, stays the same 
A) decreases, increases 
B) increases, increases 
C) increases, decreases 
D) stays the same, increases 
E) increases, stays the same

Question 15

The electron configuration [Kr]4d10 represents ________.

Accepted Answer

A) Ag+ 
B) Cd 
C) Cd+ 
D) Ag2+ 
E) Sr2+ 
A) Ag+ 
B) Cd 
C) Cd+ 
D) Ag2+ 
E) Sr2+

Question 16

Most transition metals do not form ions with a noble gas configuration.

Accepted Answer

A) True 
 B)False

Question 17

Which two bonds are most similar in polarity?

Accepted Answer

A) O-F and Cl-F 
B) B-F and Cl-F 
C) Al-Cl and I-Br 
D) I-Br and Si-Cl 
E) C-Cl and Be-Cl 
A) O-F and Cl-F 
B) B-F and Cl-F 
C) Al-Cl and I-Br 
D) I-Br and Si-Cl 
E) C-Cl and Be-Cl

Question 18

Which of the following does not have eight valence electrons?

Accepted Answer

A) Ca+ 
B) Rb+ 
C) Xe 
D) Br- 
E) All of the above have eight valence electrons. 
A) Ca+ 
B) Rb+ 
C) Xe 
D) Br- 
E) All of the above have eight valence electrons.

Question 19

Of the possible bonds between carbon atoms (single, double, and triple), ________.

Accepted Answer

A) a triple bond is longer than a single bond 
B) a double bond is stronger than a triple bond 
C) a single bond is stronger than a triple bond 
D) a double bond is longer than a triple bond 
E) a single bond is stronger than a double bond 
A) a triple bond is longer than a single bond 
B) a double bond is stronger than a triple bond 
C) a single bond is stronger than a triple bond 
D) a double bond is longer than a triple bond 
E) a single bond is stronger than a double bond

Question 20

The central atom in ________ violates the octet rule.

Accepted Answer

A) PF5 
B) SF2 
C) Cl2 
D) Br2CO 
E) FCN 
A) PF5 
B) SF2 
C) Cl2 
D) Br2CO 
E) FCN

Exam 8: Basic Concepts of Chemical Bonding

To produce maximum heat, an explosive compound should have ________ chemical bonds and decompose to molecule with ________ bonds.

A nonpolar bond will form between two ________ atoms of ________ electronegativity.

Bond enthalpy can be positive or negative.

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? O Sr Na Se Br

The diagram below is the Born-Huber cycle for the formation of crystalline potassium fluoride. -Which energy change corresponds to the first ionization energy of potassium?

A valid Lewis structure of ________ cannot be drawn without violating the octet rule.

Using the table of bond dissociation energies, the ΔH for the following gas-phase reaction is ________ kJ.

Bond enthalpy is ________.

Using the table of average bond energies below, the △H for the reaction is ________ kJ. C≡O (g) + 2H2 (g) → H3C-O-H (g) Bond: C-O C=O C≡O C-H H-H O-H D (kJ/mol): 358 799 1072 413 436 463

For a given arrangement of ions, the lattice energy increases as ionic radius ________ and as ionic charge ________.

Which of the following would have to lose three electrons in order to achieve a noble gas electron configuration? Si Mg Al Cl P

The central atom in ________ does not violate the octet rule.

The diagram below is the Born-Huber cycle for the formation of crystalline potassium fluoride. -Which energy change corresponds to the electron affinity of fluorine?

Electropositivity ________ from left to right within a period and ________ from top to bottom within a group.

The electron configuration [Kr]4d10 represents ________.

Most transition metals do not form ions with a noble gas configuration.

Which two bonds are most similar in polarity?

Which of the following does not have eight valence electrons?

Of the possible bonds between carbon atoms (single, double, and triple), ________.

The central atom in ________ violates the octet rule.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

To produce maximum heat, an explosive compound should have chemical bonds and decompose to molecule with bonds.

A nonpolar bond will form between two atoms of electronegativity.

Using the table of average bond energies below, the △H for the reaction is ________ kJ. C≡O (g) + 2H₂ (g) → H₃C-O-H (g) Bond: C-O C=O C≡O C-H H-H O-H D (kJ/mol): 358 799 1072 413 436 463

For a given arrangement of ions, the lattice energy increases as ionic radius and as ionic charge .

Electropositivity from left to right within a period and from top to bottom within a group.

The electron configuration [Kr]4d¹⁰ represents ________.