Mixtures

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					Mixtures
     A mixture is a
 combination of two or
more substances where
  there is no chemical
combination or reaction.



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  •Mixtures combine
physically in no specific
     proportions.
    They just mix.



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  •Solids, liquids and
gases can be combined
  to create a mixture.



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•When you add material
 to a gas or liquid, the
  material you add is
   called the solute.

 The material you are
 adding to is called the
       solvent.
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  •When you create a
mixture, there are no new
   substances formed.

 Each part of a mixture
keeps its own properties.

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 Mixtures can be
heterogeneous or
 homogeneous.



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Heterogeneous mixtures
  are those where the
  substances are not
   distributed evenly.

  EX: A tossed green
        salad.

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Homogeneous mixtures
 are those where the
 materials are evenly
distributed throughout.

EX:Homogenized milk
   is an example.

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    Mixtures can be
  classified into three
  types: suspension,
 colloidal and solution.
Some liquid mixtures are
        solutions.

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 •Suspension mixtures
have larger particles and
  are heterogeneous.

     Most mixtures are
   suspension mixtures.
Italian salad dressing is a
      good example.
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 •Colloidal mixtures fall
between suspension and
   solution mixtures.

   The ingredients in
 colloidal mixtures are
  smaller and usually
    homogeneous.
      EX: Oobleck
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     •Solutions are
homogeneous mixtures
     that consist of
microscopic particles and
   evenly spread out
       molecules.

EX: Kool-Aid or Iced Tea
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 You can separate a
  simple mixture by
   physical means.

No chemical reaction is
      needed.

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posted:3/14/2012
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