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There are different types of heterogeneous and homogeneous
mixtures:
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Suspensions: Suspensions are heterogeneous mixtures
that contain particles of various sizes. These mixtures
can be stirred or shaken. For a while, they will look as
if they are evenly mixed. Then the particles begin to
separate. Such a heterogeneous mixture in which the
particles separate easily is called a suspension.
Colloids: Some mixtures have particles that are
smaller than the particles in a suspension and stay
mixed together. These mixtures are colloids. Colloids
usually seem homogeneous, but they are actually
heterogeneous. Colloids have characteristics part way
between a suspension and a third type of mixture
called a solution.
Solutions: A solution is a homogeneous mixture that
is mixed so well that it has the characteristics of a
pure substance. A solution contains two or more
pure substances distributed uniformly throughout
the solution.
Pure Substances and Mixtures
Composed of particles
that are identical
Composed of different particles that are
not chemically bonded together
Elements
Composed
of atoms of
the same
kind
Solutions
Colloids
Suspensions
Particles
are the size
of atoms or
molecules,
cannot be
separated
by a filter
Particles are
larger than
molecules,
cannot be
separated
by a filter
Particles are
larger than
molecules,
can be
separated by
a filter
Compounds
Composed
of molecules
of the same
kind (atoms
of a different
kind bonded
together)
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