Chemical Bonding
Practice Test
1.
___________ sharing of electrons results in ionic bonding.
a.
Electronegative
b.
Equal
c.
Highly unequal
d.
Slightly unequal
2.
In general, _________ are malleable and ductile.
a.
metalloids
b.
nonmetals
c.
noble gases
d.
metals
3.
An intermediate difference in electronegativity results in a/an ___________________ bond.
a.
ionic
b.
polar covalent
c.
covalent
d.
weak
4.
_____________ is the measure of an atom's ability to attract electrons in a bond.
a.
melting point
b.
Shielding
c.
Ionic radius
d.
Electronegativity
5.
The boiling point of methane, CH
4
, is ___________ than that of water.
a.
much lower
b.
slightly higher
c.
slightly higher
d.
much higher
6.
The CCl
4
molecule is _________________.
a.
linear and nonpolar
b.
tetrahedral and polar
c.
octahedral and polar
d.
tetrahedral and nonpolar
7.
The CO molecule is _____________________.
a.
linear and nonpolar
b.
linear and polar
c.
tetrahedral and nonpolar
d.
trigonal planar and polar
8.
The CO
2
molecule is _____________.
a.
hexagonal
b.
trigonal planar
c.
linear
d.
pyramidal
9.
The arrangement of electron pairs around each of the two carbon atoms in the ethene molecule, C
2
H
4
, is best described as _________________.
a.
linear
b.
tetrahedral
c.
trigonal planar
d.
square planar
10.
An arrow points in the direction of the _______________ of a polar covalent molecule.
a.
negative end
b.
positive end
c.
center
d.
bottom
11.
Covalent bonding results when this element reacts with fluorine.
a.
oxygen
b.
iron
c.
lithium
d.
potassium
12.
Water molecules stick together to form droplets because of their ___________.
a.
masses
b.
polarities
c.
covalencies
d.
volumes
13.
A chemical bond that results from a shared pool of valence electrons is called a ____________ bond.
a.
directional
b.
ionic
c.
polar covalent
d.
metallic
14.
When strontium atoms react with oxygen atoms, they form __________ bonds.
a.
triple
b.
polar covalent
c.
ionic
d.
covalent
15.
In general, electronegativity ___________ atomic number within a period.
a.
increases with
b.
is inversely proportional to
c.
decreases with
d.
remains constant with
16.
Two atoms that share six electrons are said to be joined by a __________ bond.
a.
hexyl
b.
triple
c.
double
d.
single
17.
The shielding effect is the tendency of inner energy level electrons to block the attraction of the nucleus for ________________.
a.
valence electrons
b.
other atoms
c.
protons
d.
neutrons
18.
The type of analysis based on the movements of a stationary phase and a mobile phase is called _____________.
a.
photography
b.
titration
c.
chromatography
d.
phase movement
19.
The center of positive charge in the H
2
O molecule lies ______________________.
a.
between the two hydrogen atoms
b.
on one of the hydrogen atoms
c.
on the oxygen atom
d.
in the geometric center of the molecule
20.
The arrangement of electron pairs around the nitrogen atom in the ammonia molecule, NH
3
, is best described as _______________.
a.
square planar
b.
tetrahedral
c.
linear
d.
pyramidal
21.
In general, electronegativity ___________ atomic number within a period.
a.
remains constant with
b.
increases with
c.
decreases with
d.
is inversely proportional to
22.
Chemical bonding results in ________________.
a.
longer bond lengths
b.
increased stability
c.
lower density
d.
decreased stability
23.
Atoms that share electrons form __________ bonds.
a.
ionic
b.
quartets
c.
quantitative
d.
covalent
