Covalent Compounds (Ch. 7 Sect. 1)
Name______________________ Hr____
(Nonmetal-nonmetal)
Read "Naming Binary Molecular Compounds", p. 215-217, to answer the following:
Unlike ionic compounds, molecular compounds (a.k.a. "covalent" compounds) are composed of
individual _____________________ bonded units, or __________________. These substances
do not contain ions.
The old system of naming molecular (covalent) compounds is based on the use of ___________.
For example, the compound CCl4 is named carbon _____________chloride. Likewise, CO is
named ___________________________ and CO2 is named ____________________________.
These prefix-based names are often the most widely-recognized names.
Record the prefixes for the
following numbers:
1
6
2
7
3
8
4
9
5
10
Consider the following rules for the prefix system of naming:
1) For the first element listed, the element is given a prefix _________ if it contributes
____________________________________ to a molecule of the compound.
2) The second element is named by combining:
a) a _____________ indicating the number of atoms contributed by the element
b) the ____________ of the name of the element
c) the ending _________
3) The ______________ at the end of a prefix is usually _________________ when the word
following the prefix begins with another vowel. For example, one would write monoxide and
pentoxide instead of ____________________ and ______________________.
Record names or formulas for the following:
P4O10 _______________________________
_____________ dinitrogen pentoxide
N2O ________________________________
_____________ nitrogen monoxide
NO2 ________________________________
_____________ dinitrogen trioxide
On the back of this page, complete Chapter Review Qs #10 and #11 on p. 240.