Chapter 13:
Water and Its Solutions
Practice Test
1.
Molarity equals ______________________.
a.
liters of solute per kilogram of solution
b.
grams of solute per gram of solution
c.
moles of solute per liter of solution
d.
grams of solute per liter of solution
Hint
2.
The attractions between water molecules are called ________________.
a.
covalent bonding
b.
hydrogen bonding
c.
ionic bonding
d.
weak bonding
Hint
3.
Capillarity accounts for the rising of liquids in ___________________.
a.
oceans
b.
soda bottles
c.
narrow tubes
d.
rivers
Hint
4.
A solution that contains very little solute is described as ____________.
a.
dilute
b.
concentrated
c.
massive
d.
saturated
Hint
5.
The polarity of the water molecule accounts for water's ________________.
a.
unusually low melting point
b.
formula
c.
unusually high boiling point
d.
unusually high mass
Hint
6.
Atoms of this element do NOT participate in hydrogen bonding.
a.
silicon
b.
oxygen
c.
fluorine
d.
nitrogen
Hint
7.
Because of all its water, Earth is nicknamed the _____________.
a.
dense planet
b.
wet planet
c.
spherical planet
d.
blue planet
Hint
8.
Water forms drops because of its ________________.
a.
volume
b.
mass
c.
polarity
d.
surface tension
Hint
9.
The _______________ state of water is highly organized.
a.
solid
b.
gas
c.
liquid
d.
plasma
Hint
10.
A solute __________________ of the solvent.
a.
raises the freezing point
b.
raises the boiling point
c.
lowers the boiling point
d.
does not affect
Hint
11.
What is the molarity of a solution prepared by dissolving 50.0 g of NaCl to make 500.0 mL of solution?
a.
1.71 M
b.
0.855 M
c.
1.17 M
d.
0.100 M
Hint
12.
The bond angle in the water molecule is about __________.
a.
180
o
b.
45
o
c.
90
o
d.
105
o
Hint
13.
Water forms ______________ in a glass tube.
a.
hydrogen and oxygen
b.
a concave meniscus
c.
heavy water
d.
a convex meniscus
Hint
14.
Regarding solvents and solvents, ________________.
a.
nonpolar solvents dissolve polar solutes
b.
like dissolves like
c.
polar solvents dissolve nonpolar solutes
d.
solutes dissolve solvents
Hint
15.
The atoms in the water molecule are linked by ___________ bonds.
a.
ionic
b.
polar covalent
c.
pure covalent
d.
triple
Hint
16.
H
2
O is sometimes called ________________.
a.
a specific solute
b.
the universal solvent
c.
a poor solvent
d.
a solution
Hint
17.
A ________________ solution contains more than the usual maximum amount of solute.
a.
supersaturated
b.
concentrated
c.
saturated
d.
dilute
Hint
18.
Because of its ________________, a large body of water helps moderate the temperature of the surrounding area.
a.
low density
b.
boiling point
c.
low specific heat
d.
high specific heat
Hint
19.
Driven by concentration difference, the movement of molecules through a semipermeable memebrane is called ___________.
a.
osmosis
b.
reverse movement
c.
boiling
d.
capillarity
Hint
20.
Your body is about __________ water by weight.
a. 10%
b. 60%
c. 90%
d. 75%
Hint
