1. Physical vs Chemical

2. Read pp. 11-14 in your textbook Define each of the following:
Density______________________
Ductility ______________________
Solubility _______________________
Malleability ______________________
Thermal Conductivity ______________
Physical property __________________
In your notebook, give three Physical Properties of your textbook using the list above

3. Physical Property
A feature or characteristic of matter which can be observed without changing the identity of the matter
color
density
Conductivity
Thermal
electrical
smell
malleability
ductility
taste
Melting point
solubility
texture
magnetism
Boiling Point

4. Characteristic Property
A feature or characteristic of matter is specific to that substance and does not change with amount of substance
What are some characteristic properties of WATER ?
Density = 1 g/mL
Melting point = 0oC
Boiling point = 100oC

5. MAIN POINT – something NEW is being formed
Chemical Property
Describes how a substance reacts with other substances
flammability
Reactions with acid 2nd ex
Reactions with water
Non - reactivity
MAIN POINT – something NEW is being formed

6. Physical Change
A change in the properties of matter without changing the actual identity of the matter.
The physical appearance may change, but you still have the same substance as before
Chemical properties do not change
No energy is PRODUCED
Usually can be reversed

7. Physical Change Examples of Physical Change:
Breaking or cutting something
A change of state (melting, boiling, freezing, etc)
Dissolving
Making a mixture

8. Chemical Change
A change that occurs when materials react or are broken into a different chemical.
The physical appearance changes, and you have different substances than before
BOTH physical and Chemical properties may change
Energy may be Produces OR Absorbed
Usually can NOT be reversed unless you make another chemical change

9. Chemical Change Burning Mixing with acid Cooking (baking)
Examples of Chemical Change:
Burning
Mixing with acid
Cooking (baking)
Rusting (corroding)

10. Chemical Change Bubbling Color change Temperature change (exo or endo)
EVIDENCE of Chemical Change:
Bubbling
Color change
Temperature change (exo or endo)
Produce sound or light
Odor