Types of Mixtures

How can you determine which type of mixture
something is?

Solution: Homogeneous mixture of particles so small
that they cannot even be seen with a microscope
and will never settle to the bottom of their
container.

Examples: Vinegar, Soda (unopened), Hydrogen
Peroxide
Types of Mixtures

Colloid: type of mixture with particles that are larger
than those in solution but still too light to settle out.

Example: Milk (Water and Fat), Fog (water and air),
Cool Whip

*Detecting colloids is sometimes difficult so shining a
beam of light at a colloid will make the light scatter –
this scattering of light by a colloid is called The Tyndall
Effect.
Tyndall
Effect
Fog
Types of Mixtures

Suspension: heterogeneous mixture containing a liquid in which visible
particles settle.

Example: Italian dressing, muddy pond water, chocolate milk

*Hint – If it needs shaking to mix, then it’s a suspension
Italian Dressing
Muddy water
Chocolate milk
Poppy’s Grocery Mart
• On page 47 in your
lab book, glue in the
Poppy’s Grocery Mart
Page.
• Cut out the different
types of matter and
glue them into the
correct column –
Solutions, Colloids or
Suspensions.
• There are 4 products
in each column.