1. Use pp. 43-51 to fill in your GRAPHIC ORGANIZER.
Do as much as you can.
We will review this together in about 10 minutes.

2. Physical Properties
Physical Properties
Thermal Conductivity
State of matter
Malleability
Ductility
Solubility
Density
Color, Texture
MP, FP, CP, BP
Read pp A PHYSICAL PROPERTY of matter can be… observed or measured without changing the identity of the matter Examples: 1. Socks - odor 2. Aluminum can be pounded into sheets to make foil 3. Sugar dissolves in water
Ex – apple – can see it is red (color)

3. Chemical Properties Chemical Property Read p. 47
Chemical Bonds made or broken
Reactivity to other things
Not as easy to observe
Flammability
Read p. 47
CHEMICAL PROPERTIES describe a substance based on… its ability to change into a new substance with different properties
Examples:
1. WOOD – flammability (can be burned to create smoke and ash)
2. IRON – non-reactivity with oil/gas, reactivity with oxygen (rust)

4. Physical vs Chemical Changes
Physical Change
Chemical Change
Definition (p. 48)
Change that affects the physical properties of a substance – does NOT form new substances
Can physical changes normally be undone? (p. 49)
YES, they are usually easy to undo
Definition (p. 49)
One or more substances change into new substances with different properties
Can chemical changes be undone using physical means? Explain. (p. 51)
NO, cannot be reversed using physical means
Can be reversed under the right conditions by other chemical changes

5. Physical vs Chemical Change
Physical Change
Chemical Change
Examples of Physical Changes
Melting butter
Dissolving sugar in water
Freezing an ice cube
Sanding wood
Cutting your hair
Crushing a can
Bending a paper clip
Mixing oil and vinegar
Are Chemical Bonds Broken or Formed?
NO!
List clues a chemical change occurred
Color change
Fizzing/foaming
Heat
Sound/light production
Odor
YES!

6. Activity

11. Exit Ticket