pure substance: type of matter with a fixed composition ... · ch 4 ps mixtures solutions...

Ch 4 PS Mixtures solutions elements.notebook

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Pure Substance:

Type of matter with a fixed composition

Elements and Compounds!


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Class Notes MatterMatter

HeterogenousHomogenouselements compounds

MixturesPure Substances

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 waterHomogeneous 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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MIXTURES:Heterogenous


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Homogenous:COLLOIDS


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Homogenous: COLLOIDS THEY SCATTER LIGHT RAYS


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SOLUTIONSMixtures: Homogenous


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ALLOYS:SOLUTION OF METALS

BRASS = COPPER AND ZINC

BRONZE=COPPER AND TIN


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Solvent: substance that does the dissolvingSolute: substance that is dissolvedWhich is Which? solute solventOcean waterSeltzer waterLemonade


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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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• Temperature • Temperature

• Temperature

pure substance: type of matter with a fixed composition ... · ch 4 ps mixtures solutions...

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