Hydrocarbons
Practice Test
1.
What hybridization is present in an octahedral molecular geometry?
a.
sp
2
b.
sp
3
d
2
c.
sp
3d
d.
sp
3
2.
Compared to strong acids, weak acids produce __________ ions and conduct electricity __________ efficiently.
a.
fewer, more
b.
fewer, less
c.
more, less
d.
more, more
3.
Which of the following is the strongest base according to the Bronsted-Lowry theory?
a.
Cl
-
b.
I
-
c.
NO
3
-
d.
F
-
4.
Which element can share only one pair of electrons?
a.
C
b.
O
c.
N
d.
H
5.
What is the identifying structural feature of alkenes?
a.
single bonds
b.
triple bond
c.
double bond
d.
attachment of a halogen
6.
The structural formula -C=C- indicates a ___________ bond between the carbon atoms.
a.
double covalent
b.
single covalent
c.
double ionic
d.
single ionic
7.
In fractional distillation the hydrocarbons composed of fewer carbon atoms rise up the colam in the form of a _______________.
a.
distillate
b.
gas
c.
solid
d.
liquid
8.
What is the name given to a hydrocarbon that contains a ring?
a.
straight-chain hydrocarbon
b.
cyclic hydrocarbon
c.
branched-chain hydrocarbon
d.
unsaturated hydrocarbon
9.
What term is used to describe isomers that have all the atoms bonded in the same order but arranged differently in space?
a.
nonisomers
b.
structural isomers
c.
polymers
d.
stereoisomers
10.
Many simple molecules contain two lone pairs around the central atom. Which type of electron—to—electron repulsions are smallest in these molecules?
a.
bonding pair to bonding pair
b.
bonding pair to lone pair
c.
All repulsions are equal.
d.
lone pair to lone pair
11.
The acid ionization constant,
K
a
, is __________ for __________ acids.
a.
smallest, strong
b.
largest, anhydride
c.
largest, weak
d.
smallest, weak
12.
What element is combined with carbon to form the simplest organic compounds, also known as hydrocarbons?
a.
hydrogen
b.
alcohols
c.
lipids
d.
nucleic acids
13.
What type of organic compound has at least one double or triple bond?
a.
cyclic hydrocarbon
b.
alkane
c.
unsaturated hydrocarbon
d.
saturated hydrocarbon
14.
A binary compound is a ___________.
a.
compound made of polyatomic ions
b.
compound made of three types of atoms
c.
compound made of two types of atoms
d.
compound made of one type of atom
15.
What property can be assigned to a carbon atom that has four different atoms or structural groups attached to it?
a.
chirality
b.
isomerity
c.
chivalry
d.
geometry
16.
What is the name given to a series of compounds that differ from one another by a repeating unit?
a.
heterogeneous series
b.
homogeneous series
c.
homologous series
d.
hydrocarbon series
17.
When a hydrogen atom is part of a molecular structure, it is always a ________ atom.
a.
terminal
b.
central
c.
ionic
d.
1
–
18.
What is the molecular compound name for hydrazine, N
2
H
4
?
Number of atoms
Prefix
1
mono-
2
di-
3
tri-
a.
dinitrogen tetrahydride
b.
dinitrogen hydride
c.
trinitrogen pentahydride
d.
trinitrogen quatrohydride
19.
Substances that cause cancer are ______________.
a.
aliphatic
b.
substituted
c.
unsaturated
d.
carcinogenic
20.
What will a nonmetallic anhydride produce in aqueous solution?
a.
acid
b.
salt
c.
solid precipitate
d.
base
