IONIC OR COVALENT? (Page 56)
This one will be quick. Just look at the two elements in the compound and tell me if it's an ionic or a
covalent compound.
1.
2.
3.
4.
5.
Mercury and Oxygen
Carbon and Oxygen
Carbon and Iodine
Beryllium and Bromine
Iron and Fluorine
6.
7.
8.
9.
10.
Aluminum and Sulfur
Nitrogen and Oxygen
Nitrogen and Sulfur
Lead and Tellurium
Hydrogen and Fluorine
NAMING IONIC COMPOUNDS (p 56)
Tonight we will practice naming ionic compounds (those with a metal and a non-metal.) This is fairly easy. All you
do is take the name of the metal, add a space and then add the name of the non-metal with the suffix “-ide”. Then
I want you to use the Criss-Cross method to determine its formula (Show work)
Example:
Sodium + Chlorine make Sodium Chloride
Magnesium + Oxygen make Magnesium Oxide
Note: For most non-metals, you use all the words except the last syllable. Exceptions are OxygenOxide,
NitrogenNitride, and PhosphorusPhosphide. Try also to figure out the formula using the Criss Cross Method.
Elements
Sodium + Fluorine
Barium + Oxygen
Aluminum + Nitrogen
Potassium + Sulfur
Rubidium + Phosphorus
Strontium + Iodine
Cesium + Fluorine
Radium + Arsenic
Lithium + Bromine
Beryllium + Chlorine
Name
Steps:
1) Write the Symbols of the Elements, Metal First
2) Put the Oxidation Numbers on Top of the Symbols
3) Criss Cross (Metal gets non-metal's number - Non-metal gets metal's)
4) Reduce and Remove Ones
Formula