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

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

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

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

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

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

7. Mixtures
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
Separate
the parts of the
mixture
Not the linked up atoms
Separated physically or
mechanically

9. Different Ways to Separate
Mixtures
Straining

10. Different Ways to Separate
Mixtures
Magnets

11. Different Ways to Separate
Mixtures
Dissolving

12. Different Ways to Separate
Mixtures
Evaporation

13. Different Ways to Separate
Mixtures
Density