2. Matter Flowchart MATTER yes no MIXTURE PURE SUBSTANCE yes no yes no
Can it be physically
separated?
MIXTURE
PURE SUBSTANCE
yes
Is the composition no
yes
Can it be chemically no
uniform?
decomposed?
Homogeneous
Heterogeneous
Mixture
Mixture
Compound
Element
(solution)

3. Mixtures • Variable combination of 2 or more pure substances.
Heterogeneous
Homogeneous

4. Pure Substances • Element – composed of identical atoms – EX
: copper wire, aluminum foil

5. Pure Substances • Compound – composed of 2 or more
elements in a fixed ratio –
properties differ from those
of individual elements – EX
: table salt (NaCl)

6. Sublime melt vaporize freeze condense Deposit Endothermic –
energy absorbed
melt
vaporize
freeze
condense
Exothermic –
energy released
Deposit

7. Physical Properties of Matter
Color, shape, size, etc.
Also, the following properties located on your reference tables: •
Melting Points •
Boiling Points •
Density •
Solubility
Chemical Properties refer to the ability of a substance to combine or react with other substances.
Ex.: Copper turns green (think Statue of Liberty)

8. Melting and Boiling Points•
Use the Reference Tables to
determine the following: –
Rank the following substances from
smallest melting point to largest
melting point:
H2O, N2, iron, lead, O2, C12H22O11

9. Reference Tables con ’ t • What is the state of matter (solid,
liquid, or gas) will each of the
following substances at the given
temperature?
a. chlorine at - 25 o C
b. ethanol at 0 o C
c. sodium chloride at 1500 o C
d. methanol at -
100 o C
e. sulfur dioxide at 10 o C

10. Density • Using the reference tables, determine the following: –
Rank the following substances from
greatest density to smallest density: H
O, Mg, C H
, Pb, methanol, NaCl 2 6 14

11. Reference Tables con ’ t • What is the mass of 36.5 mL of ethanol? •
What is the volume of 50.0 g of
molten lead? •
You have cm 3
of glucose and
sucrose. Which sample has the
greatest mass? Support answer
with calculations.

12. Physical Changes • Changes of state (melting, boiling, freezing, etc.)
Color change
Other physical changes include:
-change in shape or size
Chemical Change:
-results in the formation of a new or different substance
-ex.: rusting, burning, color changes, gas formation