Worksheet: Solutions Introduction Name K - Weebly
Worksheet: Solutions Introduction
KEY
Name______________
1. Explain why solutions are classified as mixtures instead of compounds.
In compounds, the components are chemically combined while in mixtures the components are only
physically combined. Solutions are mixtures because the components are NOT chemically combined.
homogeneous
2. Solutions are ________________
mixtures made up of very small particles
atoms
ions
that are actually molecules, __________,
or ________.
single
3. Solutions are said to be in a ______________
phase even though the
components may have been in different phases before the solution was formed.
4. Pure gold is 24 carat. 14-carat gold contains 14 parts gold and 10 parts other
alloy
metals. 14-carat gold is said to be a(n) ___________,
which is a type of
solid
_______________
solution. An example of a gaseous solution is
air
oxygen
________________, which is made up mostly of ______________
and
liquid
nitrogen when dry. The most common solutions are ______________
solutions.
5. Define miscible:
Miscible liquids will dissolve in each other.
6. Define immiscible:
Immiscible liquids will not dissolve in each other.
Tyndall
Effect
7. Because of the _______________
_______________,
you can see the light
beams from car headlights in a fog.
8. Multiple choice: To increase the rate of solution of a solid in water,
a. increase the pressure over the water.
b. decrease the pressure over the water.
c. crush the particles of the solid.
d. chill the water.
9. If 15 grams of iodine are dissolved in 1000 mL of alcohol, the alcohol is the
tincture
(solute, solvent) and the solution is said to be a(n) _______________.
10. A substance that dissolves other materials is a (solute, solvent). The substance
being dissolved is a (solute, solvent).
CHEMISTRY: A Study of Matter
? 2004, GPB
10.7a
11. In (solutions, suspensions) the substances separate after standing a while. The
substances (can also, can not) be separated by filtration.
suspension
12. Smoke is an example of a _____________
of solid dirt and dust particles in
air. After a while, the solid particles will fall to the ground.
colloid
13. A(n) ________________¡¯s
particles are between those of a solution and a
suspension.
Emulsions
14. ________________
are actually colloids comprised of one liquid in another
emulsifying
liquid. A(n) ______________
agent keeps the particles mixed.
15. What is an aqueous solution?
An aqueous solution is one in which water is the solvent.
16. What is the solute in a brass alloy containing 75% copper and 25% zinc?
zinc
17. How does a solution behave differently from a suspension when a beam of light
is shined through it?
A solution does not exhibit the Tyndall Effect when a beam of light is shined through it
although suspensions do exhibit the Tyndall Effect.
18. Substances that conduct electricity when dissolved are said to be
electrolytes
______________,
while substances that do NOT conduct electricity when
dissolved are said to be __________________.
nonelectrolytes
CHEMISTRY: A Study of Matter
? 2004, GPB
10.7b
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