SEPARATING MIXTURES Discuss with a partner how you would separate the following mixtures Salt water Muddy water Iron filings and sand Vegetable oil and sand Vegetable oil and water ID: 363336
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Slide1
SEPARATING MIXTURESSlide2
SEPARATING MIXTURES
Discuss with a partner how you would separate the following mixtures…
Salt
water
Muddy
water
Iron
filings and sand
Vegetable
oil and sand
Vegetable
oil and water
Salt
and pepper
Be
prepared to defend your answers!
DISCUSSION
QUESTION Are the components you have separated still mixtures, or are they pure?
Why
or why not? Slide3
Sorting
separating substances based on appearance (colour, size, texture
)
some recycling programs require the driver to separate glass, plastic
,
and paperSlide4
Floating
and Settling
allow heavier
materials
to
settle to the bottom
of a
liquid
and extract
them
with
a tool
if a substance is light enough, it will float to the top of a liquid and a tool can be used to skim it from the surfaceSlide5
Sifting
separating solids by size
involves passing solid materials through a screen or mesh
parts that are small enough to pass through are separated from larger ones that can’t fit through
different than filtration;
filtration is used to separate solids from liquids
or gases
sifting separates solids from
other
solidsSlide6
Magnetism
some
metals
are
magnetic
because
their
component
particles
are
attracted
to
the
particles
within
magnets
a
magnet
can
be
used
to
separate
magnetic
materials
(iron,
steel)
from
others
(plastic
dashboards,
rubber
tires
)Slide7
SEPARATING
SOLUTIONS-Filtration
separating
solids
from
liquids
or
gases
when
solution
is
poured
through
filter,
solid
parts
are
trapped,
and
liquid
or
gas
pass
through
if
the
solid
is
small
enough,
it
may
still
pass
through
the
filter.
ex:
salt
dissolved
in
water
Coffee
filter Oil
filter Furnace
filter
Colander Slide8
Evaporation
Change
of state from a liquid to a
gas.
Used
to recover a solid solute from a solution.
Slide9
Chromatography
Chromatography is a method for
separating and identifying
the different components
of a
mixture
Chromatography works because substances in a
mixture move at different rates through
the test paperSlide10
Distillation
Uses
two changes of state: evaporation and condensation.
It
allows you to recover BOTH the solute and solvent from a solution.
Solution
is boiled, which vaporizes the solvent and separates it from the solute
Gas
condenses on a cool surface and is collected Slide11
SEPARATION TECHNIQUES IN THE
HOME
Colanders
Clothes
dryers
Window
screens
Coffee
percolators
Salad
spinners
Any
others?