Worksheet #8: Reaction
Classifications, Radical and
Polar Reactions
Leader: Hannah J.
Course: Chem 331
Instructor: Dr. Winter
Supplemental Instruction
Date: 9/17/15
Iowa State University
1) Fill in the missing spaces of the following table with the correct name, reactant(s), and/or
product(s):
Reaction or Bond
Breaking/Making
Type
Reactants
Products
A:B

A+B

A—B
Symmetrical Bond
Making

A—B
Elimination
Reactions

Unsymmetrical Bond
Making

Homolytic Bond
Breaking
Heterolytic Bond
Breaking
A:B
A—B

2) Fill in the blanks with the correct answers:
a. A ∆ over a reaction arrow means that
b. The symbol for adding light to a reaction is
is being added to the reaction.
.
c. A single-pronged or fish-hook arrow represents the movement of
electron(s).
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d. A
arrow represents the movement of 2 electrons (a lone pair).
e. A(n)
(or Lewis base) is a nucleus-lover and, thus, is
in electrons.
f. A(n)
(or Lewis acid) is an electron-lover and, thus, is
in electrons.
g. The
always attacks the
.
3) For the following reaction, the chlorination of methane, give the mechanism of the
initiation and propagation steps(s) as well as a possible termination step, including arrow
pushing in each mechanism.
Chlorination of Methane:
Initiation:
Propagation:
Termination: