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Types of Mixtures

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by Kristen Schubbe on 11 December 2011

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Transcript of Types of Mixtures

Types of Mixtures By: Kristen Schubbe 2 Basic Types of Mixtures: 1. Homogeneous
2. Heterogeneous Homogeneous Heterogeneous mixtures that are not uniform in
composition
example: mixture of clay and water
- the heavier clay particles will
concentrate near the bottom Solutions Like I described before, solutions
are also called homogeneous
mixtures.
A solution is a homogeneous mixture
of 2 or more substances in a single phase.
The atoms, molecules, or ions are thoroughly
mixted in a solution, resulting in a mixture
that has the same composition and properties
throughout it.
Solutions may exist as gases, liquids, or solids.
Components of Solutions 1. solvent - the dissolving medium
in a solution.
2. solute - the substance dissolved
in a solution. the solute is generally lesser in
quantity that the solvent.
the dissolved solute particles are
so small that they can't even be
seen! Suspensions If the particles in a solvent are
so large that they settle out unless
the mixture is constantly stirred or
agitated, the mixture is called a
suspension.

*THINK OF THIS! - If a jar of muddy water is left
sitting alone, the particles of the soil collect
at the bottom of the jar because the soil is
denser than the water.
Colloids Particles that are intermediate in
size between those in solutions and
suspensions form mixtures known as
colloidal dispersions, or, easier to say,
colloids.
Particles between 1nm and 1000nm in
diameter may form colloids. 7 Classes of Colloids 1. Sol
ex. paint, mud
2. Gel
ex. gelatin
3. Liquid emulsion
ex. milk, mayonaisse
4. Foam
ex. shaving cream, whipped cream
5. Solid aerosol
ex. smoke, auto exhaust
6. Liquid aerosol
ex. fog, mist, clouds
7. Solid emulsion
ex. cheese, butter Tyndall Effect the ability of particles to
scatter light

*EASY WAY TO REMEMBER! - Think of
when a car's headlight beam is visible
from the side on a foggy night. Electrolytes an electrolyte is a substance that
dissolves in water to give a solution
that conducts electric current

EXAMPLES!!
NaCl (sodium chloride) and HCl (hydrogen chloride) Nonelectrolytes A nonelectrolyte is a substance that dissolves
in water to give a solution that does not conduct
an electric current mixtures that are uniform
in composition
example: sodium chloride THE END!! :) Sodium Chloride You can make a vase
with clay and water!
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