Question 1

The concept that explains the properties of aromatic compounds based on a structure that is an average among two possible structures is

Accepted Answer

A) double bonding. 
B) oxidation. 
C) resonance. 
D) cis-trans isomerism. 
E) polymerization. 
A) double bonding. 
B) oxidation. 
C) resonance. 
D) cis-trans isomerism. 
E) polymerization.

Question 2

Match the following.
-polymer

Accepted Answer

A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds 
A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds

Question 3

The commonly accepted mechanism for explaining alkene reactions involves formation of

Accepted Answer

A) carbocations. 
B) carbanions. 
C) carbon atoms with 10 electrons. 
D) carbon atoms with four electrons. 
E) carbon atoms which have lost all their electrons. 
A) carbocations. 
B) carbanions. 
C) carbon atoms with 10 electrons. 
D) carbon atoms with four electrons. 
E) carbon atoms which have lost all their electrons.

Question 4

Ethylene and acetylene are the common names for the molecules ________ and ________,respectively.

Accepted Answer

A) C2H6 and C3H8 
B) C2H4 and C2H6 
C) C2H2 and C2H6 
D) C2H4 and C3H6 
E) C2H4 and C2H2 
A) C2H6 and C3H8 
B) C2H4 and C2H6 
C) C2H2 and C2H6 
D) C2H4 and C3H6 
E) C2H4 and C2H2

Question 5

Match the following.
-resonance

Accepted Answer

A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds 
A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds

Question 6

Match the following.
-ortho-dichlorobenzene

Accepted Answer

A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds 
A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds

Question 7

What is the IUPAC name of the molecule shown?

Accepted Answer

A) 3-methyl-6-heptene 
B) 5-methyl-1-heptene 
C) 5-ethyl-1-hexene 
D) 2-ethyl-5-hexene 
E) octene 
A) 3-methyl-6-heptene 
B) 5-methyl-1-heptene 
C) 5-ethyl-1-hexene 
D) 2-ethyl-5-hexene 
E) octene

Question 8

This question has three parts:
a.Sketch the carbon skeleton of 3-ethyl-2,5-hexadiene.
b.Explain why this name is not correct.
c.Give the correct name and molecular formula of the compound with the carbon skeleton you drew.

Accepted Answer

a. @#IMG-DLM& 
b.This name is not correct because

Question 9

On the basis of the number of carbon-hydrogen bonds,all of the following families of compounds can be considered unsaturated except

Accepted Answer

A) alkanes. 
B) alkenes. 
C) alkynes. 
D) arenes. 
E) none of the above 
A) alkanes. 
B) alkenes. 
C) alkynes. 
D) arenes. 
E) none of the above

Question 10

An addition reaction can best be described as a reaction in which

Accepted Answer

A) a hydrogen reacts with oxygen to produce CO2,H2O,and energy. 
B) two reactants combine to form one new product with no extra atoms. 
C) a single reactant splits into two products. 
D) two reactants exchange atoms to give two new products. 
E) a single reactant undergoes reorganization of its chemical bonds,producing an isomer of the reactant. 
A) a hydrogen reacts with oxygen to produce CO2,H2O,and energy. 
B) two reactants combine to form one new product with no extra atoms. 
C) a single reactant splits into two products. 
D) two reactants exchange atoms to give two new products. 
E) a single reactant undergoes reorganization of its chemical bonds,producing an isomer of the reactant.

Question 11

The name of the molecule shown is

Accepted Answer

A) 2-chloro-3-methylene-butane. 
B) 3-chloro-2-methylene-butane. 
C) 3-chloro-2-methyl-1-butene. 
D) cis-3-chloro-2-methyl-2-butene. 
E) trans-3-chloro-2-methyl-2-butene. 
A) 2-chloro-3-methylene-butane. 
B) 3-chloro-2-methylene-butane. 
C) 3-chloro-2-methyl-1-butene. 
D) cis-3-chloro-2-methyl-2-butene. 
E) trans-3-chloro-2-methyl-2-butene.

Question 12

Match the following.
-aromatic

Accepted Answer

A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds 
A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds

Question 13

Match the following.
-saturated

Accepted Answer

A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds 
A) another name for 1,2-dichlorobenzene 
B) the common name for hydroxybenzene 
C) another name for 1,4-dichlorobenzene 
D) a term describing a hydrocarbon in which additional C÷H bonds can be formed 
E) another name for 1,3-dichlorobenzene
F)a simple molecule that can be joined with many others to form a large molecule
G)a term describing a hydrocarbon which has the maximum number of CH bonds possible
H)refers to a class of compounds containing a specific 6-membered ring structure with delocalized electrons
I)the common name for aminobenzene
J)a concept used to describe a molecule structure as an average of two or more similar structures
K)the common name for 1,2-dimethlybenzene
L)the term used when a benzene ring is a side chain or substituent group; abbreviated as C6H5-
M)a large molecule made from many smaller molecules,often of only one or two kinds

Question 14

What is the ideal angle between the H-C-C bond in acetylene?

Accepted Answer

A) 120° 
B) 109.5° 
C) 180° 
D) 90° 
E) none of the above 
A) 120° 
B) 109.5° 
C) 180° 
D) 90° 
E) none of the above

Question 15

What is the IUPAC name of the molecule shown?

Accepted Answer

A) 2-methyl-3-methyl-2-hexene 
B) dimethylhexene 
C) 2,3-dimethyl-2-hexene 
D) octene 
E) 1,1,2-trimethyl-1-pentene 
A) 2-methyl-3-methyl-2-hexene 
B) dimethylhexene 
C) 2,3-dimethyl-2-hexene 
D) octene 
E) 1,1,2-trimethyl-1-pentene

Question 16

All of the following are general properties of alkenes except

Accepted Answer

A) soluble in non-polar (organic)solvents. 
B) low boiling points. 
C) flammable. 
D) less reactive than the corresponding alkanes. 
E) may exist as cis-trans isomers. 
A) soluble in non-polar (organic)solvents. 
B) low boiling points. 
C) flammable. 
D) less reactive than the corresponding alkanes. 
E) may exist as cis-trans isomers.

Question 17

The starting material for polymerization reactions is a(an)

Accepted Answer

A) alkane. 
B) catalyst. 
C) isomer. 
D) monomer. 
E) dimer. 
A) alkane. 
B) catalyst. 
C) isomer. 
D) monomer. 
E) dimer.

Question 18

How many hydrogen atoms are contained in a molecule of cyclopentene?

Accepted Answer

A) 5 
B) 6 
C) 8 
D) 10 
E) 12 
A) 5 
B) 6 
C) 8 
D) 10 
E) 12

Question 19

Which of the following is a correct description of the difference between a saturated and an unsaturated hydrocarbon?

Accepted Answer

A) Saturated hydrocarbons are essentially water insoluble while unsaturated hydrocarbons are water soluble. 
B) Unsaturated hydrocarbons are flammable but saturated hydrocarbons are not. 
C) Saturated hydrocarbons do not contain multiple bonds between carbons but unsaturated hydrocarbons do contain multiple bonds. 
D) Saturated hydrocarbons are composed of carbon and hydrogen but unsaturated hydrocarbons include atoms other than carbon and hydrogen. 
A) Saturated hydrocarbons are essentially water insoluble while unsaturated hydrocarbons are water soluble. 
B) Unsaturated hydrocarbons are flammable but saturated hydrocarbons are not. 
C) Saturated hydrocarbons do not contain multiple bonds between carbons but unsaturated hydrocarbons do contain multiple bonds. 
D) Saturated hydrocarbons are composed of carbon and hydrogen but unsaturated hydrocarbons include atoms other than carbon and hydrogen.

Question 20

What is the IUPAC name of the molecule shown?
CH2=CHCH=CH2

Accepted Answer

A) diethylene 
B) 1,1-butadiene 
C) 1,2-butadiene 
D) 1,3-butadiene 
E) 1,4-butadiene 
A) diethylene 
B) 1,1-butadiene 
C) 1,2-butadiene 
D) 1,3-butadiene 
E) 1,4-butadiene

Exam 13: Alkenes, alkynes, and Aromatic Compounds

The concept that explains the properties of aromatic compounds based on a structure that is an average among two possible structures is

Match the following. -polymer

The commonly accepted mechanism for explaining alkene reactions involves formation of

Ethylene and acetylene are the common names for the molecules ________ and ________,respectively.

Match the following. -resonance

Match the following. -ortho-dichlorobenzene

What is the IUPAC name of the molecule shown?

This question has three parts: a.Sketch the carbon skeleton of 3-ethyl-2,5-hexadiene. b.Explain why this name is not correct. c.Give the correct name and molecular formula of the compound with the carbon skeleton you drew.

On the basis of the number of carbon-hydrogen bonds,all of the following families of compounds can be considered unsaturated except

An addition reaction can best be described as a reaction in which

The name of the molecule shown is

Match the following. -aromatic

Match the following. -saturated

What is the ideal angle between the H-C-C bond in acetylene?

What is the IUPAC name of the molecule shown?

All of the following are general properties of alkenes except

The starting material for polymerization reactions is a(an)

How many hydrogen atoms are contained in a molecule of cyclopentene?

Which of the following is a correct description of the difference between a saturated and an unsaturated hydrocarbon?

What is the IUPAC name of the molecule shown? CH2=CHCH=CH2

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

Ethylene and acetylene are the common names for the molecules and ,respectively.

What is the IUPAC name of the molecule shown? CH₂=CHCH=CH₂