1.
Fluid – flows and takes shape of container
2.
Constant motion
3.
Relatively high Density
4.
Incompressible
5.
Diffusible
6.
Surface Tension: force that pulls liquid together, decreasing surface area to the smallest size
7.
Capillary Action: attraction of liquid surface to surface of solid
8.
L –>G (vaporization) Evaporation (molecules escape surface of nonboiling liquid) and Boiling
9.
Volatile v.s. Nonvolatile
Formation of Solids
1.
L  S freezing or solidification
2.
S  L melting same temperature

Properties of Solids and the KMT
1.
crystalline solid - orderly geometric repeating pattern arrangement a.
Ionic Crystals b.
Covalent Network crystals i.
Quartz, diamond ii.
asbestos c.
Metallic Crystals - Metals d.
Covalent molecular crystals i.
Weak LDF ii.
Dipole – Dipole iii.
H- bonding
2.
amorphous solid: arranged randomly a.
Without shape b.
Plastics and glass
3.
Definite Shape and Volume
4.
Definite Melting Point – super cooled liquids (usually liquid at temperature)
5.
High Density and Incompressibility
Assign 1 st POGIL on Phase Changes and Read and outline Ch. 12 pp.363-371
2 nd do Hot Pot , a review of Calorimetry

Read and outline Ch. 12 pp. 372-380,
is a dynamic condition in which 2 opposing changes occur at equal rates in a closed system Equilibrium Equation
L + heat energy  Vapor or
V  L + ______________
Skip Le Chatelier’s Principle for now
Table 12-2
S  L
L  G
S
G


G
L
L  S
G  S
any part of system that has uniform composition and properties
Equilibrium Vapor Pressure over a Liquid
Heating and Cooling Curves
Boiling
Condensation
Energy and Boiling  Molar Heat of Vaporization
Freezing and Melting  Molar Heat of Fusion
Sublimation and Deposition
Heating and Cooling Curve
Review Phase Change POGIL
Show/discuss Heating Curve:

Heating and Cooling Curves use
Different substances have different values for: Specific heat, Cp, molar heat of fusion or molar heat of vaporization
Water Cp = 4.84 J/g C
Ice:

Hf = 6.009 kJ/mol  mole to grams
Steam:

Hv = 40.79 kJ/mol  mole to grams

Vapor Pressure Curves
Equilibrium Vapor Pressure exists over a Liquid
Initial conditions in a closed container:
Final conditions in a closed container: liquid with vacuum above and  after time  liquid with vapor above