1. Solutions & Other Mixtures
Section 6.1

2. Objectives
Distinguish between homogenous mixtures and heterogenous mixtures.
Compare & contrast the properties of solutions, colloids, and suspensions.
Identify ways to separate different kinds of mixtures.

3. Heterogeneous Mixtures
A ___________________ mixture is not the same throughout.
Every sample of a heterogeneous mixture will have a ______________ composition
Example: fruit salad, dirt

4. Heterogenous Mixtures
Particles in a suspension are large and ________________________________________
_______________ is a mixture that looks uniform when stirred or shaken, but separates when not agitated.
Suspensions are ___________________ mixtures
Parts in a suspension are usually large enough to be filtered out
Example: _________________

5. Heterogenous Mixtures
Particles in a __________ are smaller and do not settle out
Particles stay _____________ throughout the mixture
Examples
Liquid/solid – egg whites, paint, blood
Gas/liquid – whipped cream
Gas/solid – marshmallows
Liquid/gas – fog
Solid/gas – smoke

6. Heterogenous Mixtures
Heterogenous liquid-liquid mixtures
Two immiscible liquids will separate.
The less dense liquid will be on top.
They can be separated.
_________________ liquids can mix in emulsions
Emulsions have particles so small that they may appear to be uniform
____________ (usually a protein) cover the lipids to keep them from joining together and separating from the mixture.
Vinegar and Oil salad dressing is liquid liquid mixture
-vinegar more dense on bottom
Mayonnaise is an emulsion
- egg white is the emulsifier

7. Homogenous Mixtures
________________ mixtures not only look uniform, they are uniform
Example: ________________________– particles are too small to be seen
Salt and water are not reacting, so they can be separated

8. Homogenous Mixtures Solutions are _______________ mixtures
One substance dissolves in another to form a ______________
The substance dissolving is the _____________.
The substance in which the other dissolves is the ____________.
Examples: salt water, vinegar, SCUBA air tank

9. Homogenous Mixtures ____________ liquids mix to form solutions
Two or more liquids that form a single layer when mixed are miscible.
Miscible solutions are _____________to separate.
Distillation is used to separate miscible solutions
_____________ works when boiling points of mixed substances are different
Examples
Water – boiling point is 100 degrees C
Alcohol – boiling point is 64.5 degrees C
Alcohol boils first, so it vaporizes and can be collected with very little water in it.

10. Homogenous Mixtures
If the substances have similar boiling points, it is more difficult, but can be done with _____________________.