Ch11 Introduction to Organic Molecules Verified Test Bank

General, Organic and Biological Chemistry, 4e (Smith)

Chapter 11 Introduction to Organic Molecules and Functional Groups

1) Which formula represents an organic compound?

A) NaCl

B) BaSO4

C) PH3

D) C4H10

2) Which formula represents an inorganic compound?

A) CH4

B) C2H5OH

C) Br2

D) C4H10

3) How many covalent bonds does carbon generally form in organic compounds?

A) 2

B) 3

C) 4

D) 8

4) A carbon atom surrounded by two other atoms generally forms ________ triple bond(s)?

A) 0

B) 1

C) 2

D) 3

5) A carbon atom surrounded by ________ other atom(s) generally forms one double bond?

A) 0

B) 1

C) 2

D) 3

6) Which element is not a common heteroatom in organic compounds?

A) N

B) Na

C) O

D) Cl

E) F

7) What is the most common multiple bond between carbon and a heteroatom?

A) A carbon–oxygen double bond (C=O)

B) A carbon–nitrogen double bond (C=N)

C) A carbon–nitrogen single bond (C–N)

D) A carbon–sulfur double bond (C=S)

8) According to the common bonding patters for atoms in organic compounds, oxygen atoms typically form ________ bond(s).

A) 4

B) 3

C) 2

D) 1

9) According to the common bonding patters for atoms, halogen atoms typically have ________ lone pairs of electrons when they are bonded in organic compounds.

A) 4

B) 3

C) 2

D) 1

10) Which structure has all of the hydrogens and lone pairs correctly added to the compound shown below?

A)

B)

C)

D)

11) Which structure has all of the hydrogen atoms and lone pairs correctly added to the compound shown below?

A)

B)

C)

D)

E) The compound given is not missing any hydrogen atoms nor any lone pairs.

12) Which structure has all of the hydrogen atoms correctly added to the compound shown below?

A)

B)

C)

D)

13) What is the shape around each carbon atom in the structure shown below?

A) The shape around each carbon atom is tetrahedral.

B) The shape around each carbon atom is bent.

C) The shape around the left carbon atom is tetrahedral and bent around the right carbon atom.

D) The shape around the left carbon atom is trigonal planar and bent around the right carbon atom.

E) The shape around the left carbon atom is trigonal planar and linear around the right carbon atom.

14) What is the shape around the N (1) atom and around the C (2) atom in the structure of mepivacaine given below?

A) The shape around both N (1) and C (2) is tetrahedral.

B) The shape around both N (1) and C (2) is trigonal planar.

C) The shape around both N (1) and C (2) is trigonal pyramidal.

D) The shape around N(1) is trigonal pyramidal; the shape around C (2) is trigonal planar.

E) The shape around N(1) is trigonal planar; the shape around C (2) is trigonal pyramidal.

15) What is the shape around the C (1) atom and around the O(2) atom in the structure of diethyl ether given below?

A) The shape around both C (1) and O (2) is tetrahedral.

B) The shape around C (1) is tetrahedral; the shape around O (2) is bent.

C) The shape around both C (1) and O (2) is bent.

D) The shape around C(1) is trigonal pyramidal; the shape around O (2) is linear.

E) The shape around both C(1) and O (2) is linear.

16) What is the bond angle associated with a tetrahedral shape?

A) 109.5º

B) 180º

C) 120º

D) 90º

E) 60º

17) Which of the following correctly describes the bond angles indicated in the structure below?

A) Angle 1 = 109.5°, Angle 2 = 109.5°, and Angle 3 = 180°

B) Angle 1 = 120°, Angle 2 = 120°, and Angle 3 = 180°

C) Angle 1 = 120°, Angle 2 = 120°, and Angle 3 = ~109.5°

18) What is the correct bond angle for the bond indicated in the following structure?

A) 109.5º

B) 180º

C) 120º

D) 90º

E) 60º

19) What is the correct bond angle for the bond indicated in the following structure?

A) 109.5º

B) 180º

C) 120º

D) 90º

E) 60º

20) Which of the following correctly depicts the three-dimensional shape around each carbon in the structure below?

A)

B)

C)

D)

21) Which represents a condensed structure for a four carbon hydrocarbon?

A) CH3CH2CH2CH3

B) C4H10

C)

D)

22) Which represents a skeletal structure for a five carbon hydrocarbon?

A)

B)

C)

D)

23) How many hydrogen atoms are bonded to the labeled carbons in the structure below?

A) C1 has 2 hydrogens and C2 has 2 hydrogens.

B) C1 has 1 hydrogen and C2 has 0 hydrogens.

C) C1 has 2 hydrogens and C2 has 1 hydrogen.

D) C1 has 3 hydrogens and C2 has 1 hydrogen.

24) How many hydrogen atoms are bonded to the labeled carbons in the structure below?

A) C1 has 2 hydrogens and C2 has 2 hydrogens.

B) C1 has 1 hydrogen and C2 has 3 hydrogens.

C) C1 has 2 hydrogens and C2 has 1 hydrogen.

D) C1 has 1 hydrogen and C2 has 1 hydrogen.

25) How many total H atoms are present in the structure shown below?

A) 12 H atoms

B) 18 H atoms

C) 17 H atoms

D) 19 H atoms

26) How many total H atoms are present in the structure shown below?

A) 30 H atoms

B) 13 H atoms

C) 24 H atoms

D) 28 H atoms

27) The compound below is classified as what type of compound?

A) Alkyne

B) Alkane

C) Alkene

D) Aromatic hydrocarbon

28) The compound below is classified as what type of compound?

A) Alkyne

B) Alkane

C) Alkene

D) Aromatic hydrocarbon

29) Which compound is an aldehyde?

A)

B)

C)

D)

30) Which compound is an alcohol?

A)

B)

C)

D)

31) Which compound is an ether?

A)

B)

C)

D)

32) The compound below is classified as what type of compound?

A) Aldehyde

B) Carboxylic acid

C) Ether

D) Ester

E) Ketone

33) The functional group of which type of compound does not contain a carbonyl group?

A) Aldehyde

B) Carboxylic acid

C) Ether

D) Ester

E) Ketone

34) The functional group of which type of compound does not contain an oxygen atom?

A) Alcohol

B) Carboxylic acid

C) Ether

D) Alkyne

E) Ketone

35) The functional group of which type of compound does not contain any multiple bonds?

A) Aldehyde

B) Alkene

C) Carboxylic acid

D) Alcohol

E) Aromatic

36) The molecule CH3SH is what type of compound?

A) Ether

B) Thiol

C) Amine

D) Alkyl Halide

E) Alcohol

37) Which skeletal structure represents the compound with the following condensed structure: (CH3)3CCH2OH?

A)

B)

C)

D)

38) Which structure is not possible?

A)

B)

C)

D)

39) Which structure is not possible?

A)

B)

C)

D)

40) Which compound is an amine?

A)

B)

C)

D)

41) Which compound is an amide?

A)

B)

C)

D)

42) Which formula represents an inorganic compound?

A) CH3CO2CH2CH3

B) CH3NHCH2CH3

C) ClCCCl

D) CaCl2

43) How many lone pairs of electrons are present but not shown in the molecule below?

A) 0

B) 1

C) 2

D) 3

E) 4

44) How many lone pairs of electrons are present but not shown in the molecule below?

A) 0

B) 1

C) 2

D) 3

E) 4

45) What is the condensed formula for the molecule shown below?

A)

B) (CH3)4C

C) (CH3)2(CH2)2CH3

D) CH3CCH3CH3CH3

46) What is the correct molecular formula for the skeletal structure given below?

A) C11H16O2

B) C12H12O2

C) C10H12O2

D) C10H15O2

47) Which structure would have the molecular formula C6H10O2?

A)

B)

C)

D)

48) The functional group of which type of compound contains a carbonyl group?

A) Amide

B) Alcohol

C) Ether

D) Amine

49) Based on the functional group present, the compound below is classified as what type of compound?

A) Aldehyde

B) Carboxylic acid

C) Ether

D) Ester

E) Ketone

50) The compound below is classified as what type of compound?

A) Ether

B) Amine

C) Amide

D) Aldehyde

51) What are the bond angles in the structure shown below?

A) Angle 1 = 109.5°, Angle 2 = 109.5°, and Angle 3 = 109.5°

B) Angle 1 = 109.5°, Angle 2 = 120°, and Angle 3 = 120°

C) Angle 1 = 109.5°, Angle 2 = 90°, and Angle 3 = ~109.5°

D) Angle 1 = 109.5°, Angle 2 = ~109.5°, and Angle 3 = 120°

52) What is the shape about the O atoms in the environmental toxin dioxin, shown below?

A) Tetrahedral

B) Bent

C) Trigonal planar

D) Trigonal pyramidal

E) Linear

53) How many covalent bonds does nitrogen typically form in organic compounds?

A) 1

B) 3

C) 5

D) 8

54) Which molecule is a polar molecule?

A)

B)

C)

D)

E) More than one of the molecules is a polar molecule.

55) Which representation has the bond polarities properly shown?

A)

B)

C)

D)

56) Which compound has the highest boiling point?

A) HOCH2CH2OH

B) CH3NHCH2CH3

C) CH3CO2CH2CH3

D) NaCH3COO

57) Which compound is most flammable?

A) HOCH2CH2OH

B) NaCl

C) CO2

D) HCl

58) Which functional group is NOT present in the molecule below?

A) Carbonyl group

B) Amino group

C) Benzene ring

D) All of the functional groups mentioned appear in this molecule.

59) Which bonding pattern is NOT typical of carbon atoms in organic compounds?

A)

B)

C)

D)

60) Three of the four structures below represent unstable organic compounds that are not likely to exist because they violate the octet rule. Which one of the four structures represents a stable organic compound that is likely to exist?

A)

B)

C)

D)

61) Which molecule is more water soluble?

A)

B)

C)

D)

62) The compound whose skeletal structure is shown below is used medicinally to treat fibromyalgia pain. Which statement is NOT a valid interpretation of its skeletal structure?

A) The compound contains 8 carbon atoms.

B) The compound contains 17 hydrogen atoms.

C) The compound contains 3 heteroatoms.

D) The compound contains 12 C-H bonds.

63) Which structure properly indicates the order of attachment of atoms as represented by the condensed structure CH3CHBrCH2CH(CH3)2?

A)

B)

C)

D)

64) Hydrocarbons are nonpolar molecules.

65) All molecules with polar bonds are polar molecules.

66) The compound below is a nonpolar molecule.

67) Cholesterol is soluble in a nonpolar solvent, such as gasoline.

68) Polar organic compounds are water soluble only if they are small and contain a nitrogen or oxygen atom that can hydrogen bond with water.

69) MTBE is soluble in both gasoline and in water.

70) Vitamin C is a water-soluble vitamin.

71) Vitamin B6, shown below, is a fat-soluble vitamin.

72) The two structures shown below represent the same compound.

73) The two structures shown below represent the same compound.

CH3CH2CH2CH2CO2CH3  

74) The compound represented by the skeletal structure below contains eleven (11) H atoms and two lone pairs of electrons that are not shown.

75) The molecule below is an example of a ketone.

76) The condensed structure and skeletal structure shown below represent the same compound.

77) The molecule with the condensed formula (CH3)2CHCH2CHO can be represented as the skeletal structure below.

78) The molecule below is an example of an aromatic compound.

79) The molecule below is an example of an aromatic compound.

80) VSEPR theory is based on the concept that the most stable arrangement of atoms in a molecule keeps the atoms and lone pair electrons as far away from each other as possible.

81) The two structures shown below represent the same compound.

82) A functional group is an atom or a group of atoms with characteristic chemical and physical properties.

83) The abbreviation "R" in a chemical formula represents a hydrocarbon portion of the molecule.

84) Alkanes have only C–C single bonds and no functional group.

85) Alkanes, which have no functional groups, and therefore no reactive sites, are notoriously unreactive except under very drastic conditions.

86) The compound below contains no polar bonds.

87) The compound below is a polar molecule.

88) The compound below is expected to be soluble in water.

89) In the molecule below, the shape around the carbon atom is tetrahedral and the shape around the nitrogen atom is trigonal planar.

90) The shape around the oxygen atom in the molecule below is linear.

91) In order to complete the structure of the environmental toxin dioxin shown below, four H atoms and two lone pairs need to be added.

92) The molecule below contains alkyne and carbonyl functional groups.

93) In order to complete the structure shown below, six H atoms and four lone pairs need to be added.

94) CH2F2 is a nonpolar molecule.

95) The polarity in CH2=CHF can be represented as indicated below.

96) The net dipole in CH3CHO is shown as indicated below.

97) Organic compounds are produced only by living systems, and cannot be synthesized in the laboratory.

98) Many organic compounds contain the carbonyl group as part of their functional group. A carbonyl group has the general structure indicated below.

99) A C atom surrounded by three atoms forms one double bond and two single bonds.

100) The compound below is an example of an amine.

101) The compound below is an example of an alkene.

102) The compound below is an example of an ester.

103) Organic compounds exist as discrete molecules with much weaker intermolecular forces than those seen in ionic compounds.

104) In organic compounds, any atom that is not carbon or hydrogen is called a/an ________.

105) ________ are organic compounds needed in small amounts for normal cell function.

106) Vitamin D4 (structure shown) is a (fat/water) ________-soluble vitamin.

107) Vitamin E (structure shown) is a (fat/water) ________-soluble vitamin.

108) Albuterol (trade names: Proventil and Ventolin) is a bronchodilator, a drug that widens airways, thus making it an effective treatment for individuals suffering from asthma. The functional groups in the albuterol molecule (structure shown) are ________.

109) In order to complete the structure below, ________ H atom(s) and ________ lone pair(s) of electrons must be added.

110) In order to complete the structure below, ________ H atom(s) electrons must be added.

111) In terms of type of compound, the compound shown below is classified as a/an ________.

112) In terms of type of compound, the compound shown below is classified as a/an ________.

113) The molecule below is an example of a/an ________.

114) Each C–C–C bond angle in a benzene ring (structure shown) is ________ °.

115) Bupropion is used as an antidepressant. The carbonyl group present in buproprion is part of the functional group of a ________.

116) The two types of compounds that contain a nitrogen atom are ________ and ________, which also contains a carbonyl group.

117) A covalent bond in which the electrons are not shared equally between the two atoms is referred to as a ________ bond.

118) In most polar bonds found in organic compounds between carbon and heteroatoms, the carbon atom has a partial ________ charge.

119) Hydrocarbons consist of ________ atoms and ________ atoms.

120) Molecules with a linear shape have a bond angle of ________ around the central atom.

121) The molecule drawn below is (polar/nonpolar) ________.

122) The molecule drawn below is (polar/nonpolar) ________.

123) The molecule drawn below is (polar/nonpolar) ________.