Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Pure Substance: Type of matter with a fixed composition
Elements and Compounds!
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Class Notes Matter
Matter
Pure Substances
elements
compounds
Mixtures
Homogenous
Heterogenous
Mixtures -2 or more pure substances mixed,
but not chemically combined.
* Substances can be in any amount
* Can be seperated by physical means
ex: raisins in raisin bran
TWO KINDS OF MIXTURES:
Heterogeneous Mixture: Mixture that doesn't
appear to be the same throughout
ex: sand in water
Homogeneous Mixture: appears to be the
same throughout
ex: homogenized milk
Colloid: Homogeneous mixture, the
parts aren't dissolved, remain suspended,
beam of light seen as it shines through it
(cloudy) ex: mayonnaise, fog
Solution: Homogeneous mixture in a
single physical state (dissolved)
ex: tea (liquid)
alloy: solution of metals (solid)
Stainless steel = Iron + Chromium
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
MIXTURES:
Heterogenous
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Homogenous:
COLLOIDS
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Homogenous:
COLLOIDS
THEY SCATTER LIGHT RAYS
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Mixtures: Homogenous
SOLUTIONS
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
ALLOYS:
SOLUTION
OF METALS
BRASS = COPPER AND ZINC
BRONZE=
COPPER AND TIN
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
Solvent: substance that does the dissolving
Solute: substance that is dissolved
Which is Which?
solute
solvent
Ocean water
Seltzer water
Lemonade
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
What is SOLUBILITY?
SOLUBILITY IS
The maximum amount of solute that can be dissolved in an given amount of solvent at a given temperature.
THINK!
WHAT CAN INCREASE SOLUBILITY?
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Ch 4 PS Mixtures solutions elements.notebook
January 05, 2015
• Temperature • Temperature
• Temperature 10