August 31 How do you separate How can you separate mixtures Separating Separating is based on the difference in physical properties of the substances Think about how you would separate a bag of mampms ID: 502911
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Slide1
Separating Mixtures
August 31Slide2
How do you separate?
How can you separate mixtures?Slide3
Separating
Separating is based on the difference in
physical properties
of the substances…
Think about how you would separate a bag of m&ms
Some mixtures are easier to separate than othersSlide4
What would you rather separate?Slide5
Filtration
Filtration
: technique that uses a porous barrier to
separate a solid from a liquid
Heterogeneous mixtures (sand & water)Slide6
Distillation
Distillation
:
separation technique that is based on
differences in the boiling points
of the substances involved
Homogeneous mixtures (most
)
2 liquidsWhen precisely controlled, distillation can separate substances having boiling points that differ by only a few degreesSlide7Slide8
Crystallization/Boiling
Crystallization
:
separation technique that results in the
formation of pure solid particles from a solution
containing the dissolved
substance
You boil out the liquid and are left with the solid crystals
Salt water Slide9Slide10
Chromatography
Chromatography
:
technique that separates the components of a mixture (called the
mobile phase
) on the basis of
the tendency of each to travel
or be drawn across the surface of another material
(called the stationary phase). Example-InkDifferent masses travel different distances!Slide11Slide12Slide13
Reflection
Could you separate the colors in black pen ink? How could you do this and what separation technique would you use?Slide14