Transcript Mixtures and Solutions

Mixtures and Solutions
Lesson 1
Classifying Mixtures and Solutions
What is a Mixture?
A. A mixture is a
combination of two
or more different
kinds of matter
(solid, liquid, gas) or
substances, each of
which keeps its own
physical properties.
What is a Mixture?
B. A substance is
anything that
contains only one
kind of material.
Examples would be
sugar, water, iron
filings
C. When you mix sugar
with iron filings, you
can easily see the
two solids in the
mixture.
Identifying Mixtures
A. Homogenous Mixtures
1. A mixture in which the
different substances are
mixed evenly, and are
too small to be seen.
2. No matter how long you
let a powdered drink mix
and water stand, like
Kool-Aid, the evenly
mixed particles that
make up this
homogenous mixture
will not separate.
Identifying Mixtures
B. Heterogenous Mixtures
1. A mixture in which the
different substances are
mixed unevenly.
2. Many times you can see
the different substances
in the mixture. Examples
would be: bread,
chocolate milk, smoke
and air, paper, sugar
mixed with iron filings.
What is a Solution?
A. Sugar and Water
1.
2.
3.
4.
5.
When you mix sugar and
water, it’s not easy to tell
what is in the mixture.
The sugar seems to
disappear.
But if you taste it, you’ll
find that the water is
sweet. It is distributed
evenly throughout the
mixture.
When one substance
dissolves in another, the
two form a solution.
In other words, any
mixture made up of tiny
particles that are evenly
mixed and do not settle
out is called a solution.
What is a Solution?
B. A solution is a specific
type of mixture.
1.
2.
Are all solutions
mixtures? Yes
Are all mixtures
solutions? No
C. Solubility is the ability to
be dissolved.
D. Sugar is soluble in water,
but ground black pepper
is not.