Molecules, Compounds, and Mixtures

							Molecules, Compounds, and Mixtures




                By: Marissa, Tyler, and
                Tim
Molecules & Compounds

   A combination of two or more atoms is called
    a molecule.
   When two or more molecules are combined,
    it is called a compound.
   Compounds are chemically pure and all of
    their molecules are identical.
Mixtures & Solutions

   Mixtures are substances composed of two
    or more components physically intermixed.
   Solutions are homogeneous mixtures of
    gases, liquids, or solids.
   The substance that takes up the greatest
    amount is the solvent while the substance
    with the smaller amount is called the solute.
Concentration of Solutions

   Solutions are described in terms of
    concentration.
   They are described in terms of the percent
    of the solute in the total solution.
   Another to express the concentration of a
    solution is in terms of molarity.
Colloids

   Colloids are heterogeneous mixtures that
    appear translucent or milky.
   Colloids have unique properties such as the
    ability to change reversibly from a fluid to a
    more solid state (also known as sol-gel
    transformations).
   An example would be Jell-O or any gelatin.
Suspensions

   Suspensions are heterogeneous mixtures
    with large, visible solutes that settle out.
   An example is blood, where blood cells are
    suspended in the fluid portion of the blood.