1. Do Now:
Look back at your description of aluminum foil (or describe it now), were the characteristics you listed physical or chemical properties? Why?
Write the mathematical model for the conversion of dkL to L (or mL if you’re up for a challenge)!

2. B. Physical vs. Chemical Signs of a Chemical Change
change in color or odor
formation of a gas
formation of a precipitate (solid)
change in light or heat
C. Johannesson

3. Properties of Matter
Physical properties are the characteristics of matter that can be changed without changing its composition.
characteristics that are directly observable
Chemical properties are the characteristics that determine how the composition of matter changes as a result of contact with other matter or the influence of energy.
characteristics that describe the behavior of matter 58 58

4. Extensive vs. Intensive
Extensive Property
depends on the amount of matter present
Intensive Property
depends on the identity of substance, not the amount
C. Johannesson

5. Extensive vs. Intensive
Examples:
boiling point
volume
mass
density
conductivity
intensive
extensive
C. Johannesson

6. Physical vs. Chemical Physical Property
can be observed without changing the identity of the substance
Chemical Property
describes the ability of a substance to undergo changes in identity
C. Johannesson

7. Physical vs. Chemical Examples: melting point flammable density
magnetic
tarnishes in air
physical
chemical
C. Johannesson

8. Matter Classification
C. Johannesson

9. Exit Card: Answer the following alone:
What are the four states of matter?
Which state has the fastest moving particles?
Which two states do not have a definite volume?
List one chemical and one physical change.
Is weight an extensive or intensive property?
Is density a chemical or physical property?
Which class(es) of matter can be separated by physical means (with a filter, distillation, or by hand)? 65 65