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Chemistry 15 and 16


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Water has ____ because of h-bonding
unusually high low pressure
solution (saturated)
Stock solution formula
moles before dilution = moles after dilution
Suspensions are .. and are not
Heterogeneous mixtures where their particles are suspended in medium due to movement - once movement ceases then particles settle out (due to gravity), not true solutions
Particles can be filtered
in a suspension but not in solution (or a colliod)
Colloids are
somewhere between a solution and a suspension
"glue like"
Tyndall Effect
the scattering of visible light through colloidal particles
What has the Tyndall Effect?

What does not?
suspensions, colloids

Mixtures are composed of 2 phases of matter...
1) Dispersed phase (particles)
2) continous phase (medium)
Brownian Motion
The chaotic movement of collodial particles. This is caused by collisions of the molecules of the dipersion mediam with the small disperesed colloidial particles (keeps them from settling)
4 Types of Colliods
1) Liquids and solids dispersed in gases (aersols)
2) Gases dispersed in liquids or solids (foams)
3)liquids dispersed in other liquids or solids (emulsion)
4) Solids dispersed in liquid or solids (Sols)
Colligative properties (properties of a solution) include
vapor pressure, freezing point, boiling point, and osmotic pressure
Colligative properties are determined by
a number of particles in solutions rater than by type
Nonvolatile =
Volatile =
Low VP, High BP
High VP, low BP
Raolts law
Vapor pressure of a solution varies directly as the mole fration of the solvent
Raolts law formula
Vapor Pressure Solution= Mole Fraction solvent x Vapor pressure of a solvent by an amount that is characteristic of that solvent

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