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CLASSIFICATION OF MATTER and SEPARATION

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CLASSIFICATION OF MATTER and SEPARATION SEPARATION OF A HETEROGENEOUS MIXTURE Filtration separates a liquid or soluble component from a solid. – PowerPoint PPT presentation

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Title: CLASSIFICATION OF MATTER and SEPARATION


1
CLASSIFICATION OF MATTER and SEPARATION
2
Classification of Matter
3
SEPARATION OF A HETEROGENEOUS MIXTURE
Separation based on physical method. Magnetic
property of the iron.
4
Filtration separates a liquid or soluble
component from a solid.
5
Figure 2.17 Separation of a sand-saltwater
mixture.
6
Distillation
  • A solution is heated in a distillation apparatus.
    If the water evaporates at a lower temperature
    than the other substance, water will collect in
    the flask attached to the condenser, leaving the
    other substance behind. (ex salt water)
  • If water evaporates at a higher temperature than
    the other substance, then the other substance
    will evaporate first and therefore collect in the
    flask attached to the condenser. (ex alcohol
    and water)

7
Separation of a Homogeneous Mixture (parts have
different boiling points)
8
The solution is boiled and the component with the
lowest boiling point is driven off, in this case,
its steam (water).
9
The substance with the higher boiling point
remains in the flask, in this case salt remains
after all water is boiled off.
10
No chemical change occurs when salt water is
distilled.
11
Electrolysis decomposition of water by an
electric current, is chemical process
12
Chromatography
  • Separation by using differences in the degree to
    which various substances are attracted to the
    surface of a nonreactive substance.
  • Ex You can tell the difference between two
    writing pens, because chromatography done on
    filter paper will show the components of the
    inks. They will probably be different.

13
Chromatography separates parts with different
attractions to a medium
14
Column Chromatography
15
Homework
  • Page 77 4, 5, 6
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