Deck 9: Hydrocarbons: An Introduction to Organic Molecules

Question 1

The following molecule contains two functional groups, a haloalkane group and an alkyne.
CH₃-CHBr-CH=CH₂

Answer 1

False

Question 2

The following represents trans-2,3-dimethyl-2-pentene.

Answer 2

False

Question 3

Carbon atoms involved in double bonds exhibit a trigonal planar arrangement.

Answer 3

True

Question 4

The two compounds shown below have the same molecular formula.
CH₃-CH₂-O-CH₂-CH₂-CH₃ CH₃-CH₂-CH₂-CH₂-CH₂-OH

Question 5

The following compound is classified as an alkane.

Question 6

One of the reasons that carbon forms such a large number of compounds is due its ability to form long chains and rings.

Question 7

How many hydrogen atoms would be needed to complete the following structure?

A)6
B)7
C)9
D)10

Question 8

The following two substances would have the same physical properties.

Question 9

The compound shown below is an isomer of 2,2-dimethylbutane.

Question 10

The correct IUPAC name of the following compound is methylcyclohexane.

Question 11

The two compounds shown below would be expected to exhibit similiar properties.
CH₃-CH₂-O-CH₂-CH₂-CH₃ CH₃-CH₂-CH₂-CH₂-CH₂-OH

Question 12

The following compound contains four tetrahedrally arranged atoms.

Question 13

The following compound would be classified as an:

A)alkane
B)alkene
C)alkyne
D)aromatic

Question 14

The compound below is unlikely to exist.

Question 15

In propyne, the arrangement of bonds around all of the carbon atoms is shown below.

Question 16

The following structure illustrates a trans isomer.

Question 17

Examine the structure shown below. The compound is a hydrocarbon and an aromatic compound

Question 18

The line structure for is shown below.

Question 19

The structure for 2,2,3,3-tetramethylbutane is:

Question 20

The following compound would be correctly classified as an alkyne.

Question 21

What is the IUPAC name for compound represented below?

A)isopropylbenzene
B)propylcyclohexane
C)propylbenzene
D)propylcyclohexene

Question 22

Of the compounds listed here, which one is not a constitutional isomer of the other three?

A)2,3-dimethylpentane
B)3-methylhexane
C)3-ethylpentane
D)2,2-dimethylbutane

Question 23

Which of the following is(are) constitutional isomer(s) of hexane?

A)
B)
C)
D)both a and b

Question 24

Which of the following hydrocarbons is most likely to be a gas at room temperature?

A)butene
B)1-hexene
C)2-octene
D)4-decene

Question 25

Consider the compounds given in the choices. Which would have the lowest melting point?

A)
B)
C)
D)All have about the same melting point.

Question 26

A student named a particular compound 2-ethyl-3-methyl-2-butene. Assuming that the student's choice actually corresponded to the correct distribution of the double bond and the substituents, what is the correct IUPAC name for this compound?

A)2-ethyl-3-methyl-2-butene
B)3,4-dimethyl-3-pentene
C)2,3-dimethyl-2-pentene
D)2,3-dimethyl-1-pentene

Question 27

Which of the following line structures represents butane?

A)
B)
C)
D)

Question 28

Which of the following is probably soluble in water?

A)ethylbenzene
B)xylene
C)2,2-dimethylbenzene
D)All are insoluble in water.

Question 29

The IUPAC name of the following contains an ethyl group located at position

A)1.
B)2.
C)3.
D)4.

Question 30

Consider the structure of the compound shown below. This compound is correctly characterized as:

A)branched alkane
B)saturated
C)aromatic
D)all of the above

Question 31

Which of the following line structures is 4-isopropyloctane?

A)
B)
C)
D)

Question 32

Which of the following is a correct structure for methylcyclopentane?

A)
B)
C)
D)All are correct representations.

Question 33

Which of the following is a correct IUPAC name?

A)1-methylhexane
B)2-ethylhexane
C)3-propylhexane
D)None, they are all incorrect.

Question 34

What is the IUPAC name for the following alkane?

A)2-ethylpropane
B)methylbutane
C)pentane
D)3,3-dimethylpropane

Question 35

What must be the name for the missing hydrocarbon in the following combustion reaction? _______ + 3 O₂ → 2 CO₂ + 2 H₂O

A)ethane
B)ethene
C)ethyne
D)More than one hydrocarbon is possible.

Question 36

What is line bond formula for the following full structural formula?

A)
B)
C)
D)

Question 37

Give the IUPAC name for the following

A)3,6-diethyl 3-methylnonane
B)2,2,5,6-tetraethylhexane
C)2,2,5-triethyloctane
D)none are correct

Question 38

Which of the following would show the most similar chemical behavior to 1-butanol, which is shown below? CH₃CH₂CH₂CH₂-OH

A)
B)
C)
D)

Question 39

Given the structure below, what is the IUPAC name for the compound?

A)2,5-dimethyl-3-heptyne
B)5-ethyl-2-methyl-3-hexyne
C)3,7-dimethyl-4-heptyne
D)1,1,5-trimethyl-2-hexyne

Question 40

Which of the following is could not be used to represent the same compound?

A)
B)CH₃-CH₂-CH₂-CH₂-CH₃
C)C₅H₁₂
D)All could represent the same compound.

Question 41

Examine the following structures. Fill in the blanks with the appropriate letter (A,B,C,....).
The balanced equation for the combustion of structure _______________________ would required the largest coefficient for O₂.

Question 42

Consider the following structures. Fill in the blanks with the appropriate letters (A,B,C,or D).
Structure C is identical to Structure _____________________.

Question 43

Consider the following structure. This substance would be classified as a(n)

A)alkane.
B)alkene.
C)alkyne.
D)aromatic hydrocarbon.
E)cycloalkane.

Question 44

Consider the following molecules. Fill in the blanks with the appropriate terms from the list below.
alkane
cycloalkane
alkene
alkyne
aromatic compound
Structure B is classified as a(n) _________________________.

Question 45

Consider the following molecules. Fill in the blanks with the appropriate terms from the list below.
alkane
cycloalkane
alkene
alkyne
aromatic compound
Structure C is classified as a(n) _________________________.

Question 46

Consider the following structures. Fill in the blanks with the appropriate letters (A,B,C,or D).
Structure ______________________ is a stereoisomer of cis-2-hexene.

Question 47

Consider the following molecule of the birth control drug known as RU 486.
Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the circle is a(n)_____________________.

Question 48

Consider the following structure. What is the relationship to the structure given below?
CH₃-CH₂-CH₂-CH=CH-CH₂-CH₂-CH₃

A)constitutional isomers.
B)cis-trans isomers.
C)same compound.
D)cycloalkane.
E)different compound.

Question 49

Consider the following molecule of the birth control drug known as RU 486.
Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the oval is a(n)_________________________.

Question 50

Consider the following molecule of the birth control drug known as RU 486.
Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the triangle is a(n)_____________________.

Question 51

Which of the following is the appropriate ending for the name of an alkane?

A)ane
B)ene
C)benzene
D)yne

Question 52

Examine the following structures. Fill in the blanks with the appropriate letter (A,B,C,....).
Structure ____________________ will have the lowest melting point.

Question 53

Consider the following structures. Fill in the blanks with the appropriate letters (A,B,C,or D).
Structure A is a constitutional isomer of Structure _____________________.

Question 54

Consider the formula given below. C₄H₈
This following represents the molecular formula of an

A)alkyne
B)alkene
C)alkane
D)none of these

Question 55

Consider the following molecule of the birth control drug known as RU 486.
Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the square is a(n)_________________________.

Question 56

Consider the following molecules. Fill in the blanks with the appropriate terms from the list below.
alkane
cycloalkane
alkene
alkyne
aromatic compound
Structure D is classified as a(n) _________________________.

Question 57

What is the name of a branch on the principal carbon chain that contains three carbon atoms?

A)pentyl
B)propyl
C)ethyl
D)methyl

Question 58

Examine the following structures. Fill in the blanks with the appropriate letter (A,B,C,....).
Structure ______________________is most likely to be least reactive.

Question 59

Consider the following structure. What is the relationship to the name given below?
2,3-dimethylhexane

A)constitutional isomers
B)cis-trans isomers
C)same compound
D)cycloalkane
E)diffferent compound

Question 60

Consider the following molecules. Fill in the blanks with the appropriate terms from the list below.
alkane
cycloalkane
alkene
alkyne
aromatic compound
Structure A is classified as a(n) _________________________.

Question 61

What is the name of the following compound?

Question 62

During the complete combustion of benzene, if 9.55 g of benzene were consumed what mass of oxygen in grams would be needed?

Question 63

Draw the condensed structural formula of 3-ethyl-3-methylhexane.

Question 64

Examine the following structure. Complete the following statements about this structure.
If the hydrogen atom numbered "1" replaced by a methyl group, the IUPAC name of the new compound would be ____________.

Question 65

Examine the following structure. Complete the following statements about this structure.
The IUPAC name for this substance is____________.

Question 66

What is the condensed structural formula for the following substance?

Question 67

What is the molecular formula for the following substance?

Question 68

Examine the following structures. Fill in the blanks with the appropriate letter (A,B,C,....).
Structure ______________________ would have chemical and physical properties closest to that of 2-hexene.

Question 69

Examine the following structure. Complete the following statements about this structure.
The arrangement of atoms about each of the carbon atoms is a ____________.

Question 70

Examine the following structure. Complete the following statements about this structure.
If all three numbered hydrogen atoms were replaced by a methyl group, the IUPAC name of the new compound would be ____________.

Question 71

Using molecular formula, write the balance equation for the complete combustion of benzene.

Question 72

Examine the following structure. Complete the following statements about this structure.
If the hydrogen atom numbered "2" replaced by a methyl group, the IUPAC name of the new compound would be ____________.