Section 13.1
Uniquely Water
Practice Test
1.
Your body is about __________ water by weight.
a.
10%
b.
60%
c.
75%
d.
90%
Hint
2.
Because of all its water, Earth is nicknamed the _____________.
a.
blue planet
b.
dense planet
c.
spherical planet
d.
wet planet
Hint
3.
The atoms in the water molecule are linked by ___________ bonds.
a.
ionic
b.
polar covalent
c.
pure covalent
d.
triple
Hint
4.
The water molecule is polar partly because of its _____________.
a.
geometry
b.
weight
c.
mass
d.
volume
Hint
5.
The polarity of the water molecule accounts for water's ________________.
a.
unusually high boiling point
b.
unusually low melting point
c.
unusually high mass
d.
formula
Hint
6.
Ice is ___________ liquid water.
a.
equally as dense as
b.
less dense
c.
more fluid
d.
more massive
Hint
7.
The bond angle in the water molecule is about __________.
a.
105
o
b.
90
o
c.
45
o
d.
180
o
Hint
8.
The attractions between water molecules are called ________________.
a.
covalent bonding
b.
hydrogen bonding
c.
ionic bonding
d.
weak bonding
Hint
9.
Atoms of this element do NOT participate in hydrogen bonding.
a.
fluorine
b.
nitrogen
c.
oxygen
d.
silicon
Hint
10.
H
2
O is most dense at __________.
a.
277 K
b.
0
o
C
c.
32
o
F
d.
-32 K
Hint
11.
The _______________ state of water is highly organized.
a.
gas
b.
liquid
c.
plasma
d.
solid
Hint
12.
Water forms drops because of its ________________.
a.
mass
b.
polarity
c.
surface tension
d.
volume
Hint
13.
Capillarity accounts for the rising of liquids in ___________________.
a.
narrow tubes
b.
oceans
c.
rivers
d.
soda bottles
Hint
14.
Water forms ______________ in a glass tube.
a.
a concave meniscus
b.
a convex meniscus
c.
heavy water
d.
hydrogen and oxygen
Hint
15.
Because of its ________________, a large body of water helps moderate the temperature of the surrounding area.
a.
boiling point
b.
high specific heat
c.
low density
d.
low specific heat
Hint
16.
Water's ___________________ helps keep you cool on a hot day.
a.
high heat of vaporization
b.
high density
c.
low freezing point
d.
large volume
Hint
17.
H
2
O is sometimes called ________________.
a.
a poor solvent
b.
a specific solute
c.
a solution
d.
the universal solvent
Hint
18.
Which of the following molecules can form hydrogen bonds?
a.
BaH3
b.
CH3
c.
NaH3
d.
NH3
Hint
