Solutions
Practice Test
1.
Which of the following statements is true?
a.
Nonpolar solvents are useful for dissolving polar solutes.
b.
Polar solvents are useful for dissolving nonpolar solutes.
c.
Nonpolar solvents are useful for dissolving nonpolar solutes.
d.
Nonpolar solvents are not useful because they do not form solutions with water.
Hint
2.
__________ are compounds that form charged particles.
a.
Electrolytes
b.
Ions
c.
Nonpolar components
d.
Nonelectrolytes
Hint
3.
Which of the following increases rate of evaporation?
a.
increasing attraction between solvent molecules
b.
decreasing attraction between solvent molecules
c.
combining polar solvents with polar solutes
d.
decreasing surrounding temperature
Hint
4.
Which of the following is the most precise term?
a.
concentrated
b.
dilute
c.
supersweet
d.
40 percent juice by volume
Hint
5.
Why is it dangerous to take large doses of some nonpolar vitamins?
a.
They cannot dissolve in fat and instead dissolve in the water inside body cells.
b.
They are water soluble and become concentrated in body tissues.
c.
They are fat soluble and accumulate in body tissues.
d.
These substances cannot be utilized by the body.
Hint
6.
Gases are __________ in cooler solvents.
a.
insoluble
b.
less soluble
c.
precipitates
d.
more soluble
Hint
7.
What causes soda to bubble over upon opening?
a.
The temperature inside the bottle is low.
b.
The carbon dioxide is more soluble.
c.
Gas bubbles are exposed to the surface and come out of solution.
d.
The pressure of the carbon dioxide in the bottle increases.
Hint
8.
Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
a.
none of the answers are correct
b.
argon
c.
oxygen
d.
nitrogen
Hint
9.
__________ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
a.
Solubility
b.
Polarity
c.
Supersaturation
d.
Concentration
Hint
10.
A solution that contains all the solute it can hold at a given temperature is __________ .
a.
unsaturated
b.
soluble
c.
supersaturated
d.
saturated
Hint
11.
Substances that do not ionize in water and cannot conduct electricity are called __________ .
a.
nonelectrolytes
b.
dissociated
c.
nonions
d.
electrolytes
Hint
12.
The process in which water molecules draw ions away from a crystalline solid and into solution is ___________.
a.
concentration
b.
supersaturation
c.
nonpolarization
d.
dissociation
Hint
13.
Which of the following actions increases the rate of dissolving?
a.
decreasing the temperature
b.
decreasing the pressure
c.
stirring the solution
d.
using larger-sized crystals
Hint
14.
Vitamin C is a(n) __________ compound and dissolves readily in water.
a.
polar
b.
oily
c.
nonpolar
d.
fat soluble
Hint
15.
What characteristic of water makes it the universal solvent?
a.
nonpolar
b.
large molecules
c.
long-chain hydrocarbon
d.
polar
Hint
16.
Which attribute enables water molecules to dissolve sugar?
a.
stationary nature of water molecules
b.
nonpolarity of water
c.
liquid state of the solute
d.
electrical charge
Hint
17.
Sterling silver contains 92.5 percent silver and 7.5 percent copper. Which substance is the solute?
a.
copper
b.
platinum
c.
silver
d.
Solids do not form solutions.
Hint
18.
A __________ is the substance being dissolved in a solution.
a.
insolvent
b.
solvent
c.
substrate
d.
solute
Hint
19.
Which of the following is a solution?
a.
milk
b.
chlorine
c.
muddy water
d.
salt water
Hint
20.
Because electrons are distributed equally, a hydrocarbon is __________ .
a.
nontoxic
b.
polar
c.
insoluble
d.
nonpolar
Hint
