1. GENERAL CHEMISTRY-II (1412)
S.I. # 8
1. Ionic bonding is the complete ___________of an electron from one element to
another.
a. sharing b. splitting c. transfer d. hybridization
2. Covalent bonds have equally __________ pairs of electrons between atoms.
a. unshared b. unconnected c. connected d. shared
3. Polar covalent bonds are defined as: _________
a. when electrons are shared between atoms
b. when one atom exerts a greater attraction for the bonding electrons
c. when the molecule has different charges between its atoms
d. when the transfer of electrons is completed between atoms
4. Polar bonds: __________
a. exist between diatomic molecules
b. occur only when a halogen is bonded to a metal or another halogen
c. have dipoles consisting of positive and negative charges
d. have an electronegativity value of zero
5. Which kinds of intramolecular forces do the following posses?
a. Magnesium Hydroxide
b. Oxygen
c. Carbon Disulfide
d. Iodide monbromide
e. Methane
6. As the polarity of a molecule increases its boiling point will: ________
a. not change b. decrease c. stop d. increase
The more polar a molecule is the higher its boiling point is.
2. 7. Which of the following molecules has the largest intermolecular dispersion
forces?
Ne or Ar ______________
F2 or Br2 ______________
N2 or Cl2 ______________
HF or HI _______________
BH3 or BF3 ______________
8. Place in order from the highest viscosity to the lowest viscosity.
Methanol
Glycerol
Propanol
Ethanol
9. Define a phase diagram:
10. On a phase diagram, the critical temperature is ______________
a. the temperature below which a gas cannot be liquefied
b. the temperature above which a gas cannot be liquefied
c. the temperature at which all three states are in equilibrium
d. the temperature required to melt a solid
e. the temperature required to cause sublimation of a solid
11. A 0.100 m solution of which one of the following solutes will have the lowest
vapor pressure? _______________
a. KClO4 b. Ca(ClO4)2 c. Al(ClO4)3 d. sucrose e. NaCl
12. When Na-Cl dissolves in water, aqueous Na+ and Cl- ions result. The force of
attraction that exists between Na+ and H2O is called a(n) _________________.
