Do Now:
• Creative Assignment
– You are a CATION
– You are writing to an ANION
• Write a short Love Note about the topic:
“Let’s bond together”
Email to ddavis@scischina.org
You have 5 minutes!!!!!
HAVE YOUR HW OUT ON YOUR DESK!
Trade Papers and
Check
Check
Answers
Steps to NAMING ionic compound:
1. Name the cation
2. Name the anion and change the ending to “ide”
-
Group 17: ine  ide
Oxide
Sulfide
Selenide
Phosphide
Silicide
nitride
hydride
3. Add (roman numeral) if the cation is a transition metal
Steps:
1.
Name the cation
2.
Name the anion and change the
ending to “ide”
-
Group 17: ine  ide
Oxide
Sulfide
Selenide
Phosphide
3. Add (roman numeral) if transition metal
1. Calcium and Bromine
Naming Ionic Compounds
Examples:
2. MgS
Try #1-4 on Ionic Formulas HW
Steps:
1.
Name the cation
2.
Name the anion and change the
ending to “ide”
-
Group 17: ine  ide
Oxide
Sulfide
Selenide
Phosphide
3. Add (roman numeral) if transition metal
Naming Ionic Compounds
w/ Transitional Metals
Examples:
**Work Backwards**
1. FeO
2. CrBr3
Name the following in your notebook:
1. Pb3N2
Then TRY #12-14 from formula HW
2. CdBr2
3. NiI3
Steps to NAME an ionic compound
with Polyatomic Ions:
1. Name cation (or ammonium  only “+” p.i.)
2. Name polyatomic ion
*** DO NOT CHANGE ANYTHING***
Example: Mg(NO3)2
Molecular / Covalent Compounds
• A compound that is composed of 2 or more
non-metals
• How to recognize an molecular/covalent
compound …
•
Anion and
anion
• Nonmetal and nonmetal
•
and
-
Steps to NAMING a covalent
compound :
1. Name the first element in formula
2. Name second element in the formula and change
endings to “ide”
3. Add prefixes before each element name (according
to the subscripts)
4. EXCEPTION  never use mono for the 1st element
Prefixes to MEMORIZE
Number
1
2
3
4
5
6
7
8
9
10
Prefix
Steps:
1.
Name first element in
formula
2.
Name second element and
change endings to “ide”
3.
Add prefixes (according to
how many there are)
4.
EXCEPTION  never use
mono for the 1st element
1. CO2
Naming Covalent Compounds
Examples:
2.N3F8
Try #9-11on Naming Covalent Compounds Worksheet
Steps to Write the Formula for a
covalent compound :
1. Write the symbol for the first element in the compound.
2. Write the formula for the second element in the formula.
3. Add the prefixes as subscripts for each element.
•
•
NO REDUCING
NO CHARGES
Ex 1: Carbon Monoxide
Ex 2: Diphosphorus tetrachloride
HW