1. KEY
GENERAL CHEMISTRY-II (1412)
S.I. # 9
1. London dispersion force is the attractive force between: ____B_____
a. an ion and a permanent dipole
b. an instantaneous dipole and an induced dipole
c. two permanent dipoles
d. two molecules with hydrogen bonded to the oxygen atom
e. any of the above
2. Which of the following has dispersion forces as its only intermolecular force?
_____A_____
a. CH4 b. HCl c. C6H13NH2 d. NaCl e. CH3Cl
3. The process of a substance sticking to the surface of another is called_____D____
a. Absorption b. Diffusion c. Effusion d. Adsorption e. coagulation
4. ____B_____ is the energy required to expand the survace area of a liquid by a
unit amount of area.
a. Viscosity b. Surface tension c. Volatility d. Meniscus e. Capillary action
5. The vapor pressure of any substance at its normal boiling point is ___C___
a. 1 Pa b. 1 torr c. 1 atm d. equal to atmospheric pressure
e. equal to the vapor pressure of water
6. The concentration of nitrate ion in a solution that contains 0.900 M aluminum
nitrate is _____D_____ M.
a. 0.900 b. 0.450 c. 0.300 d. 2.70 e. 1.80
Al3+ and NO-  Al(NO)3 there is 3 times as much nitrate present to aluminum
nitrate available.
7.The direct conversion of a solid to a gas is called ______E________.
a. fusion b. vaporization c. condensation d. boiling
e. sublimination

2. KEY
8. Name the phase transition in each of the following situations and indicate
whether it is exothermic or endothermic.
a. when water is cooled, it turns to ice.
FREEZING - EXOTHERMIC
b. wet clothes dry on a warm summer day
EVAPORATION OR VAPORIZATION - ENDOTHERMIC
c. frost appears on a window on a cold winter day.
DEPOSITION - EXOTHERMIC
NOMENCLATURE!!! Name/symbol
1. Methane CH4
2. Sucrose C12H22O11
3. Dry Ice CO2
4. Diamond C
5. Quartz SiO2
6. Boron Nitride BN
7. SiC silicon carbonide
8. CaF2 Fluorite
9. C3H8O Propanol or Ethyl methyl ether depending on structure
10. NH3 Ammonia