Wednesday, June 10, 2009

Classifying Matter...

Mixture
-two of more substances that are not chemically combined with each other and can be seperated by physical means. The substance in a mixture retain their individual properties.

Solutions
-a special kind of mixture where one substance dissolves in another

Elements
-simplest form of a pure substance. They cannot be broken down into anything else by physical or chemical means.

Compounds
-pure substances that are the unions of two or more elements. They cannot be broken into simpler substances by chemical means.

Heterogeneous Mixtures
-least mixed
-large particles

Homogeneous Mixtures
-most mixed
-"well mixed"
- appears to be uniform (the same) throughout
-small particles

Colloids
-particles mixed together/ not dissolved
-large particles/ permanently suspended
-will not separate upon standing
-Ex.Shaving cream; jello

Solutions
-one substance dissolves into another
-(homogeneous mixture)
-best mixed
-have solute and solvent
*Solution=When 1 substance dissolves into another
*Solute=Being dissolved
*Solvent=Thing dissolving solute

Elements
-the simplest purest substance
-Atoms together=element
-combines together
-element+element=compound
Example: Making brownies (:
*ingredients=elements
brownie=compound

Compounds
-More than 1 element
-pure substance
-Ex: Water = hydrogen+oxygen

Alloys
-metals dissolved into metals
-pure substance (element)

Types of Solutions
Solute,Solvent,Example:
Gas+Gas=Air (O in N)
Gas+Liquid=Soda Water (CO2 in H2O)
Solid+Liquid=Ocean Water (Salt in H2O)
Solid+Solid=Gold Jewlery(Cu in Au)

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