Chapter 18:
Organic Chemistry
Practice Test
1.
This alkane has the formula C
10
H
22
.
a.
octane
b.
ethane
c.
decane
d.
pentane
Hint
2.
These two types of plastics are easiest to collect and sort for recycling.
a.
PET and HDPE
b.
PP and PVC
c.
LDPE and PET
d.
PVC and PSEPS
Hint
3.
A large molecule made up of many smaller, repeating units is called a _____________.
a.
monomer
b.
wax
c.
ketone
d.
polymer
Hint
4.
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.
chemical behavior
b.
mass
c.
volume
d.
density
Hint
5.
________________ have the prefixes cis- and trans-.
a.
Stereoisomers
b.
Geometric isomers
c.
Di- and Tri- isomers
d.
Structural isomers
Hint
6.
Organic compounds include most compounds that contain the element __________.
a. silicon
b. nitrogen
c. iodine
d. carbon
Hint
7.
What is the name of the alkene with the formula CH
3
CH=CHCH
2
CH
3
?
a.
1-pentene
b.
2-pentene
c.
2-methyl-1-butene
d.
hexene
Hint
8.
____________ plastics harden permanently when molded.
a.
Thermosetting
b.
Monomer
c.
Polymer
d.
Thermoplastic
Hint
9.
Hydrocarbons in which all the carbon atoms are connected by single bonds are _______________.
a.
unsaturated hydrocarbons
b.
alkynes
c.
alkenes
d.
saturated hydrocarbons
Hint
10.
How is petroleum separated?
a.
hydrogenation
b.
aromatic distillation
c.
fermentation
d.
fractional distillation
Hint
11.
The prefix "cyclo" indicates that a hydrocarbon contains a carbon ____________.
a.
carbon atom
b.
carbon chain
c.
carbon branch
d.
carbon ring
Hint
12.
Alkanes with 20 or more carbon atoms are __________ at room temperature and pressure.
a.
gases
b.
solids
c.
fluids
d.
liquids
Hint
13.
Large alkanes are converted into smaller, more useful alkanes and alkenes by a process known as ___________.
a.
concentration
b.
combustion
c.
condensation
d.
cracking
Hint
14.
Petroleum is separated into different mixtures of hydrocarbons, such as gasoline and kerosene, by ________________.
a.
osmosis
b.
electrolysis
c.
chromatography
d.
fractional distillation
Hint
15.
Ethylene monomers form polyethylene in a process known as ___________________.
a.
addition polymerization
b.
ionic bonding
c.
condensation
d.
condensation polymerization
Hint
16.
An unsaturated hydrocarbon has one or more ______________carbon-carbon bonds.
a.
triple
b.
double
c.
single
d.
double or triple
Hint
17.
The structure of 3-ethylpentane is best described as _____________________________.
a.
a three-carbon chain with a five-carbon attachment on the third carbon of the chain
b.
a five-carbon ring with a two-carbon attachment on the third carbon of the ring
c.
a five-carbon chain with a two-carbon attachment on the third carbon of the chain
d.
a five-carbon chain with a one-carbon attachment on the third carbon of the chain
Hint
18.
What is the monomer in the natural polymer known as cellulose?
a.
sucrose
b.
ribose
c.
glucose
d.
methanol
Hint
19.
What is the shape of the benzene molecule?
a.
trigonal pyramidal
b.
hexagonal planar
c.
octahedral
d.
tetrahedral
Hint
20.
These types of organic compounds have strong aromas, are volatile, and are used in artificial flavorings and fragrances.
a.
alkynes
b.
ethers
c.
aldehydes
d.
esters
Hint
