1. Physical or Chemical Change?
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Rusting iron nailsC.
Dissolving sugar into iced tea
P.
Cutting paper into smaller pieces
P.
Plastic becoming brittle when left out
in the sun
C.

2. Review
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4 States of Matter
Physical Changes
Change of State
Chemical Changes

3. Mixtures
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Two or more substances
physically combined NOT
chemically combined
The parts of a mixture can be
elements, compounds or
elements and compounds

4. Mixtures
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No chemical reaction takes place
No new substance is formed
All substances in a mixture retain
their individual properties

5. Mixtures
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They can be arranged in any
way
The ratio of a mixtures parts
are not exact

6. Mixtures
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Two classifications of mixtures:
1. Heterogeneous
A mixture that is not the same
throughout
Salad, trail mix, Lucky Charms

7. Mixtures
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2. Homogeneous
A mixture that is the same
throughout
Its mixed so well it looks like
one substance
Milk, air, sugar cookies

8. Separating Mixtures
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Separate the parts of the
mixture
Not the linked up atoms
Separated physically or
mechanically

9. Different Ways to Separate
Mixtures
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Straining

10. Different Ways to Separate
Mixtures
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Magnets

11. Different Ways to Separate
Mixtures
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Dissolving

12. Different Ways to Separate
Mixtures
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Evaporation

13. Different Ways to Separate
Mixtures
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Density