Name:______________________________
Study Guide: Chemical Bonding, VSEPR Theory
This study guide is designed to help you prepare for the exam. This is due the day before the
exam.
I will post a key at a later date.
1) What is a polyatomic ion? How does it behave in a chemical bond?
2) What is a fullerene? What are some practical or potential applications of fullerenes?
3) How are ions formed? Why are they formed?
4) What is an ionic bond?
5) What is coulomb’s law and how does it apply to the melting points of ionic compounds?
6) What is the difference between a compound and a molecule?
7) Arrange in increasing order of melting point:
NaF, MgF2, MgCl2, KF2, Al2O3, BeO, BeF2
8) Define covalent bonds and explain using electronegativities why covalent bonds do not give up
electrons.
9) What is a Lewis electron dot diagram? What is it used for?
10) What is the octet rule? What are its exceptions?
11) The following contain bonds that are covalent, ionic, or neither. Which are they? Which form
compounds and which form molecules? Which behave as ions? What are they called
(nomenclature)? Draw a Lewis dot structure for the applicable molecules.
PCl5, NaCl, NH4+, O2, LiF, BeCl2, CO32-, NH3, CO2, H2, N2, NF3, CCl4, H2O, Si2Cl6
12) What does VSEPR stand for? What does it mean about atoms in a molecule?
13) Define electronegativity.
14) Draw SF4 Lewis Dot, VSEPR shape, name the shape, label the angles involved.
15) Draw H2O Lewis Dot, VSEPR shape, name the shape, label the angles involved.
16) Draw CO2 Lewis Dot, VSEPR shape, name the shape, label the angles involved.
17) Draw NH3 Lewis Dot, VSEPR shape, name the shape, label the angles involved.
18) Draw SF6 Lewis Dot, VSEPR shape, name the shape, label the angles involved.
19) Draw XeF4 Lewis Dot, VSEPR shape, name the shape, and label the angles involved.
20) Define polar bond.
21) Define polar molecule.
22) Define non-polar bond.
23) Define non-polar molecule.
24) Give an example of a non-polar molecule with a polar bond.
25) How does VSEPR affect the polarity of an atom?
26) Are the following Polar or Non-Polar molecules? Why or why not?
a. CH4
b. C2H4
c. H2O
d. ClF5
e. NH3
f.
PCl5
Review your Lab: Electrical Conductivity, Covalent vs. Ionic, properties.