The
exam will cover the material found in Chapters 11-13. Remember, the best way to
prepare is to complete the OWL assignments and do the optional Chapter Review
questions. The following list is provided to help guide your preparation, but
may not include everything.
You
may bring a calculator and one page of notes. You will be provided with a
periodic table and any necessary data- no need to put any data tables on your
notes sheet. However, the summary table of cubic unit cells (Table 12.2 on page
12-7 of your book) could be a useful thing to put onto your notes sheet.
Be able to:
á
Identify the type(s) of
intermolecular forces acting between molecules (of the same type or two
different molecules)
á
Be able to interpret a plot of
vapor pressure vs. temperature (e.g., comparing curves for two different
compounds, tell which one has stronger intermolecular forces)
á
Given a series of compounds,
determine which
o has the
highest/lowest boiling point
o has the
highest/lowest freezing point
o has the
highest/lowest vapor pressure
o has the
highest/lowest enthalpy of vaporization
o is the
most/least soluble in water
á
Given a chemical formula,
determine
o whether
the molecule can form hydrogen bonds
o if the
molecule is hydrophobic or hydrophillic
o whether the
molecule is soluble in oil or water
á
Interpret phase diagrams
o using a
phase diagram, tell what phase/state a material will be in under certain
conditions
o describe
what happens to the phase, pressure, or temperature of the material when you
move from one point to another on a phase diagram
o determine the relative density of two phases from the phase diagram (for
example, the phase diagram of water shows that water is more dense than ice
á
Given temperature data, tell
whether dissolution is exothermic or endothermic
á
State whether the dissolution of
a particular molecule is enthalpy-favored, entropy-favored, or both
á
Determine whether the solubility
of a material will increase or decrease as the temperature is increased
á
Given the composition of two
solutions, determine which will have a higher melting point or boiling point
Things to Know:
á
Why oil and water don't mix (in
thermodynamic terms)
á
Trends:
o how
vapor pressure changes as you increase intermolecular forces
o how
boiling point changes as you increase intermolecular forces
Calculations you should be prepared to do:
á
Determine the chemical formula of
a compound from unit cell information
á
Determine the volume of a unit
cell given the unit cell type and atom radius
á
Determine the molarity,
molality, mole fraction or weight percent of a
component in a solution
á
Calculate the solubility of a gas
using Henry's Law
á
Calculate the vapor pressure of a
solution Raoult's Law
á
Calculate the boiling
point/freezing point of a solution
á
Given the necessary information
(vapor pressure, etc.) calculate the molar mass of a solute
Terms to Know:
|
dipole |
|
|
dynamic equilibrium |
induced dipole (=dispersion) |
|
freezing point |
Henry's Law |
|
hydrophillic |
micelle |
|
intermolecular forces |
hydrogen bond |
|
ion |
triple point |
|
metastable |
colligative |
|
molality |
molarity |
|
mole fraction |
weight percent |
|
phase diagram |
unit cell |
|
Raoult's Law |
solute |
|
solvent |
Le Chatelier's
Principle |
|
surfactant |
hydrophobic |
|
vapor pressure |
boiling point |