A Mixture is a physical combination of 2 or more pure substances,
each of which retains its own chemical properties.
1.
Composition
2. Can be separated into its component substances by purely
physical means:
,
, etc.
3. Mixtures of different %’s of the same 2 substances may have very
different properties.
Homogeneous Mixtures
Heterogeneous Mixtures
1. Look like a single substance.
2. Have a single phase (s, l, g)
Examples:
1. Components can be distinguished (you can see pieces or
chunks.)
2. May have more than one
.
Examples:
,
Particles get bigger.
Solution
1. Composed of a
into which a
is dissolved.
2. Not always a liquid, gaseous
and solid solutions also exist:
Examples:
Alloy – a solution of 2 _________
Tincture – an __________-based
solution.
Colloid
1. Particles too small to be seen
with your eye are suspended in
another substance.
2. Particles do not settle over
time.
3. Tyndall Effect
Examples:
Emulsion
1. 2 liquids which don’t normally
mix.
2. Held together by an emulsifier
or binding agent.
Examples:
Suspension
1. Particles in liquid settle out
over time due to gravity.
2. Particles are large enough to
be seen.
Examples:
Matter is anything that has both
and
Go to Mixtures box on the back.
A Pure Substance has the following characteristics:
1.
Composition
2. Can’t be separated into simpler substances by
means.
3.
and physical
are
the same throughout the substance.
Element
1. Can’t be further
2. Represented on the
Table by an
symbol.
3. Simplest unit is an
Examples: ______, ______, ______
Compound
1. Formed when two or more
atoms
together.
2. Can only be decomposed
into simpler substances by
reactions.
3. Simplest unit is a
.
Examples: __________,
__________, __________