I. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
________ 1. All of the following statements are general properties of organic compounds except
A. The bonds are covalent.
B. They have limited or no water solubility.
C. They have relatively low boiling points.
D. They usually behave as electrolytes in solution.
________ 2.Which of the statements about the behavior of the element carbon in organic molecules is
incorrect?
A. Carbon can be involved in polar covalent bonds.
B. Carbon can form single, double, or triple bonds with other carbon atoms.
C. In addition to other carbon atoms, carbon is likely to form bonds with hydrogen, nitrogen, or
oxygen.
D. When carbon forms four single bonds, the bond angles are 90°.
________ 3.Which atom is least likely to form a polar covalent bond with carbon?
A. H B.N C. Cl D. O
________ 4. Which atom is most likely to form a polar covalent bond with carbon?
A. O B. C C. H D. S
________ 5. Which family of organic molecules is a hydrocarbon?
A. aromatic B. aldehyde C. alcohol D. amide
________ 6. Which functional group does not contain oxygen?
A. ketone B. alcohol C. carboxylic acid D. amine
________ 7. The functional group illustrated by R-O-Rʹ is an
A. ether B.alcohol C. aldehyde D. ester
________ 8. The functional group illustrated by R-OH is an
A. ester B. alcohol C. alkyl D. aldehyde
________ 9. The functional group illustrated below is an
R-C-NH2
A. ether B. ester C.amide D. amine
________ 10. The functional group illustrated below is an
R-C-H
A. ether B. alcohol C.ester D. aldehyde
________ 11. The functional group which illustrates an ester is________.
A. R-C≡C-R C. R-C-NH2
B. D.
O O
R-C-NH2 R-C-O-R
________ 12. Which of the following statements about alkyl groups is incorrect?
A. -C2H5isanexample.
B. An alkyl group with four carbon atoms would include butyl in its name.
C. They are derived from alkenes.
D. In naming, they are used as prefixes and have a ʺylʺ ending.
________ 13. The family of organic compounds with functional groups that do not consist only of
hydrocarbons is
A. arenes B. aldehydes C. alkanes D. alkynes
________ 14. All of the families below include functional groups which contain oxygen except
A. esters B. ethers C. ketones D. alkyl halides
________ 15. Which factor is most important in determining the chemistry of an organic molecule?
A. the number of carbon-hydrogen bonds
B. the functional groups
C. the number of carbon-carbon bonds
D. the number of branches in the carbon chain
________ 16. Which family of organic compounds does not contain any multiple bonds?
A. alkyl halides B. aldehydes C. alkynes D. ketones
________ 17. The arene or aromatic functional group is often represented as
A. at least one double bond between carbon and oxygen
B. a carbon-oxygen-hydrogen group
C. a six-membered ring with three double bonds.
D. one or more bonds between carbon and nitrogen.
________ 18. The alkyne functional group is
A. one or more bonds between carbon and nitrogen
B. a six-membered ring with three double bonds
C. a double bond between carbon and oxygen.
D. a carbon-carbon triple bond.
________ 19. The alcohol functional group is
A. a carbon-oxygen-hydrogen group
B. one or more bonds between carbon and nitrogen
C. a carbon-carbon triple bond
D. a six-membered ring with three double bonds.
________ 20. Which list includes all the elements that would be found in an alkane with an amine group?
A. C,H,O B. C,H,N C. H,N D.C,H
________ 21.Two or more compounds with the same molecular formula but with the atoms connected
differently are refer red to as
A. constitutional isomers C. normal alkanes
B. conformations D. branched alkanes
________ 22. In straight-chain alkanes, the carbon atoms on each end of the molecule always form bonds
with ________ atoms of hydrogen; the carbons within the molecule always form bonds with
________hydrogen atoms.
A. 2;2 B. 4;4 C. 3;2 D. 4;2
________ 23. How many structural isomers are possible for the molecular formula, C4H10?
A. 2 B. 1 C. 4 D. 3
________ 24. Which molecule is an isomer of the molecule shown?
CH3
CH3 CH2 CH2 CHCH2 CH3
A. CH3 C. CH3
CH3 CH2 CH2 CH2CH CH3 CH3 CH2 CHCH2 CH2 CH3
B. CH3 D.
CH3 CH2 CH2 CHCH2 CH3
CH3 CH2 CH2 CHCH3
CH3
_______25. Which molecule is not an isomer of the molecule shown?
C2H5-O-C2H5
A. CH3 C. CH3 –O-CH2 CH2CH3
CH3 CHCH2 OH
B. O D.
CH3 CH2 CHCH3
CH3 CH2 –C- CH3
O
________ 26. All of the choices listed are representations of the same molecule except
A. CH3 CH3 C. CH5H12
CH2 -CH2-CH2
B. D.
CH3 CH2 CH2CH2 CH3 (CH3)2CHCH2CH3
________ 27. The carbon skeleton of an alkane is shown below. How many hydrogen atoms are bonded to
the carbon marked with a*?
C C
C-C- C-C-C- C
*
A. 0 B. 1 C. 2 D. 3
________ 28. The carbon skeleton of an alkane is shown below. How many hydrogen atoms are bonded to
the carbon marked with a*?
C C*
C-C- C-C-C
A. 0 B. 1 C. 2 D. 3
________ 31. The various shapes taken on by an organic molecule are known as ________.
A. configurations C. conformations
B. constitutional isomers D. preferential isomers
________ 32. How many carbon atoms are there in the longest continuous chain of the molecule shown?
(CH3)3C-(CH2)3-CH3
A. 8 B. 3 C. 6 D. 4
________ 33. The name of the hydrocarbon with three carbon atoms and having only single bonds between
carbon atoms is ________.
A. propane B. ethane C. butane D. decane
________34. How many carbon atoms are there in the longest continuous chain of the molecule shown?
(CH3)2CH-(CH2)5-CH3
A. 5 B.9 C.8 D. 7
________35. What is the IUPAC name of the compound shown? (CH3)3-C-CH2-CH2-CH3
A. 2,2-dimethylpentane C. 2-dimethylpentane
B. heptanes D. 2-ethylhexane
________36. What is the minimum number of carbons that must be present in a molecule to have a
secondary carbon?
A. 1 B. 4 C. 2 D. 3
________37. The molecule shown is named as a substituted ________ because________.
CH3 CH3
CH3CHCH2CHCHCH3
CH3 CH3
A. decane; it contains 10 atoms of carbon
B. butane; four carbons are substituted onto the chain
C. hexamethane; it contains six methyl groups altogether
D. hexane; it contains six atoms of carbon in its longest chain
________ 38. Which group is the best description of the properties of alkanes?
A. flammable, reactive, water soluble
B. flammable, non-reactive, insoluble in water
C. non-flammable, non-polar, water soluble
D. non-flammable, polar, reactive
________ 39.Which of the following properties is not characteristic of alkanes?
A. They form strong hydrogen bonds.
B. They are generally less dense than water.
C. Their melting points increase with molecular weight.
D. They are tasteless and colorless.
________40. Which is not a property of most alkanes?
A. light odor C. burn readily in an open flame
B. soluble in water D. colorless
II. MATCHING: Choose the item in the table that best matches the item in each number. Write your answer on
the line provided in each number.
1. Amine ________
2. Carboxylicacid ________
3. Alkylhalide ________
4. Ketone ________
5. Alcohol ________
6. Ester ________
7. arene(aromatic) ________
8. aldehyde ________
9. amide ________
10. ether ________
A. CH2 CH3 B. CH3CH2CHCH3 C. D. E.
O O
HN OH C C
CH3 CH2 –C-CH3 CH3 CH2 –C C CH3CH2-C-O-CH2CH2CH3
CH2CH3
C-C
F. G. CH3CH2Br H. I. J.
H O
OH
CH3CH2 C CH3CH2-C-NH-CH2CH2CH CH3 CH2-O-CH2CH3
CH3 CH2C=O
O
Testname:UNTITLED11
1)E
2)D
3)A
4)A
5)Ithasfourvalenceelectronsandisaverysmallatom,soitalwaysformsfourstrongcovalentbonds.Itbondswith
othercarbonatomstoformlongchainsorrings.
5)A
6)E
7)A
8)B
9)C
10)E
11)E
12)C
13)B
14)D
15)B
16)A
17)C
18)D
19)A
20)B
22)Afunctionalgroupisagroupofatomswithinalargermoleculethatgivesthemoleculespecificphysicalandchemical
properties.Organicchemistsusefunctionalgroupsasanorganizationaltoolinclassifying,naming,andpredictingthe
propertiesoforganicmolecules.
21)A
22)C
23)D
26)A
27)B
28)D
29)B
30)
31)B
32)C
33)C
34)A
35)
36)
37)
38)
39)C
40)
41)
42)
43)
44)
45)A
46)
47)EAnswerKey
Testname:UNTITLED11
48)
49)
50)E
51)E
52)D
53)B
54)B
55)A
56)B
57)C
58)A
59)C
60)D
61)B
62)E
63)D
64)E
65)A
66)F
67)G
68)C
69)B
70)E
71)D
72)A
73)B
74)C
1
18
Answer Key
1. D
2. D
3. A
4. A
5. A
6. D
7. A
8. B
9. C
10. D
11. D
12. C
13. C
14. D
15. B
16. A
17. C
18. D
19. A
20. B
21.
