Separating Mixtures
using Physical
Properties
How can you separate out many kinds of
matter?
Separating Mixtures
USING A MAGNET
Separating Mixtures
USING A
FILTER &
FUNNEL
This only works if
the solid Is NOT
dissolved by the
solvent, and you
have a suspension.
After filtering, you
have a precipitate.
Separating Mixtures
USING
EVAPORATION
Separating Mixtures
USING
DISTILATION
Separating Mixtures
USING DENSITY
A separation funnel can be used if the two
liquids will not mix. Often used when
separating organic material (oil) and
aqueous material (water).
Can be accelerated
using sonication
Separating Mixtures
USING CHROMOTOGRAPHY
Separating Mixtures (Combo)
BY DISSOLVING & FILTRATION &
EVAPORATION
A mixture of salt and sand
can be separated by
dissolving the salt in water,
then using filtration
separate the sand from the
aqueous salt layer. Then
evaporate the water to
obtain solid salt again.
Separating Mixtures (Combo)
BY DISSOLVING & DENSITY
A mixture of salt, sand, and blue
plastic beads can be separated
by dissolving the salt in water,
then using density to separate
into three layers.
Conservation of Mass
MATTER CANNOT BE CREATED OR DESTROYED, ONLY CHANGE FORMS
If you add vinegar (10 g) to milk (100g) and it thickens,
how much matter do you have?
Separating Mixtures Lab
You will observe and analyze the separation of
mixtures based on physical properties of
matter.
Separating Mixtures –
How to fold a filter paper
Separating Mixtures –
Lab Details
ITEMS: GOGGLES, funnel, filter
paper, filter cone, magnet,
volumetric cylinder, water (from
sinks), evaporating dish, and
unknown substance mixture.
Separating Mixtures –
Lab Write Up
O Design step-by-step procedures to separate the
mixture. Include a flow chart.
O Describe how each substance was able to keep
its own physical properties when it was mixed
with another substance. (key words: density,
magnetism, solubility)
O How do you know that the mixture of
substances is not a chemical combination?
TURN IN ON THE ELMO BY THE END OF CLASS