Chapter 18:
Organic Chemistry
Practice Test
1.
Which of these compounds may be an alkene?
a.
C
6
H
14
b.
C
2
H
6
c.
C
4
H
8
d.
C
22
H
46
Hint
2.
These two types of plastics are easiest to collect and sort for recycling.
a.
PET and HDPE
b.
PVC and PSEPS
c.
LDPE and PET
d.
PP and PVC
Hint
3.
Hydrocarbons in which all the carbon atoms are connected by single bonds are _______________.
a.
alkenes
b.
unsaturated hydrocarbons
c.
alkynes
d.
saturated hydrocarbons
Hint
4.
Organic compounds include most compounds that contain the element __________.
a. iodine
b. silicon
c. nitrogen
d. carbon
Hint
5.
The structure of 3-ethylpentane is best described as _____________________________.
a.
a five-carbon chain with a one-carbon attachment on the third carbon of the chain
b.
a three-carbon chain with a five-carbon attachment on the third carbon of the chain
c.
a five-carbon ring with a two-carbon attachment on the third carbon of the ring
d.
a five-carbon chain with a two-carbon attachment on the third carbon of the chain
Hint
6.
____________ plastics harden permanently when molded.
a.
Thermoplastic
b.
Thermosetting
c.
Polymer
d.
Monomer
Hint
7.
A functional group is the part of a molecule having a specific arrangement of atoms that is largely responsible for the _______________ of the parent molecule.
a.
density
b.
mass
c.
chemical behavior
d.
volume
Hint
8.
This alkane has the formula C
10
H
22
.
a.
ethane
b.
decane
c.
octane
d.
pentane
Hint
9.
Petroleum is separated into different mixtures of hydrocarbons, such as gasoline and kerosene, by ________________.
a.
fractional distillation
b.
osmosis
c.
chromatography
d.
electrolysis
Hint
10.
What is the name of the monomer found in cellulose?
a.
sucrose
b.
glucose
c.
carbon
d.
hydrogen
Hint
11.
These types of organic compounds have strong aromas, are volatile, and are used in artificial flavorings and fragrances.
a.
alkynes
b.
esters
c.
aldehydes
d.
ethers
Hint
12.
The prefix "cyclo" indicates that a hydrocarbon contains a carbon ____________.
a.
carbon atom
b.
carbon branch
c.
carbon ring
d.
carbon chain
Hint
13.
What type of organic compound is characterized by a hydroxy functional group bonded to a carbon atom of a hydrocarbon?
a.
octane
b.
an alcohol
c.
an aldehyde
d.
carbon dioxide
Hint
14.
An unsaturated hydrocarbon has one or more ______________carbon-carbon bonds.
a.
double or triple
b.
double
c.
triple
d.
single
Hint
15.
What is the shape of the benzene molecule?
a.
hexagonal planar
b.
trigonal pyramidal
c.
tetrahedral
d.
octahedral
Hint
16.
What is the monomer in the natural polymer known as cellulose?
a.
sucrose
b.
methanol
c.
glucose
d.
ribose
Hint
17.
________________ have the prefixes cis- and trans-.
a.
Stereoisomers
b.
Structural isomers
c.
Geometric isomers
d.
Di- and Tri- isomers
Hint
18.
What is the name of the alkene with the formula CH
3
CH=CHCH
2
CH
3
?
a.
2-pentene
b.
hexene
c.
2-methyl-1-butene
d.
1-pentene
Hint
19.
______________ gives additional strength to a polymer.
a.
Cross-linking
b.
Ionic bonding
c.
Boiling
d.
Single bonding
Hint
20.
What are alkanes with no branches called?
a.
saturated hydrocarbons
b.
straight-chain alkanes
c.
broken-chain alkanes
d.
unsaturated hydrocarbons
Hint
