1. “What are you doing tomorrow for Future Ready Day?”
Good Afternoon!
“What are you doing tomorrow for Future Ready Day?”
Please grab:
Naming Grid W.S (yellow)
Foldable WS (white)
Homework Log

2. Test Summary Averages 4th = % 5th = % 7th = %
I may drop 1 or 2 problems, I’ll let you know.
Retakes mandatory for 70% and below AFTER test corrections
Test Corrections Begin Next Week!
Averages
4th = %
5th = %
7th = %

3. Homework Log… Unit 2: Nuclear Reactions Unit 3: Naming
Make a Reflection Statement
Unit 3: Naming
Make a goal for how you will be successful in Unit 3. What is your plan?
When you are done, put your homework log away. 

4. Naming Ionic Compounds
Simple Ionic Compounds, Type II Ionic Compounds, Polyatomics

5. Why is it important to know how to name a chemical?
KCl – Potassium Chloride
In fertilizers
Alternate to NaCl, in water softeners and table salt
Lethal Injection (in high concentrations)
KClO3 – Potassium Chlorate
Pesticides
Generate oxygen on air & space craft
Propellant for gun powder/explosives
Different Name = Different Properties

6. This determines how many of each atom goes into each ionic compounds!
Big Idea!
Compounds like to be neutral!
So the combined charges of the two elements must be neutral
(ex: Na + and Cl-)
This determines how many of each atom goes into each ionic compounds!

7. Example 1: Barium and Oxygen
BaO – Barium Oxide
Barium has 2 electrons that it is giving away and Oxygen has 6 valence electrons and wants to take 2 electrons to fill its valence shell.

8. Example 2: Sodium and Oxygen
The subscript tell us how many of that atom we have. The ionic compound wants to be neutral—that charges are wiping each other out.
Na2O – Sodium Oxide
2 of THAT atom

9. Example 3: Aluminum & Sulfur
Al2S3 – Aluminum Sulfide
2 aluminum
Hint: To make the compound neutral….
Look for the least common multiple and make the overall charge of each ion equal to this 6+ vs 6-

10. Writing Formulas Easy way:
The charge on the cation becomes the subscript on the anion.
The charge on the anion becomes the subscript on the cation.
If these subscripts are not in the lowest whole-number ratio, divide them by the greatest common factor.
Cation is positive. Anion is negative.

11. Write small! We will be adding a chemical name too!
Practice Time
On the white grid, fill in the chemical formulas in the first 5 boxes (there are little numbers in the boxes)
Write small! We will be adding a chemical name too!

12. Naming Rules for Simple Ionic Compounds

14. Helpful Reminders
Metals =Losers
Positive = Ca+ions
Non-Metals =Thieves (Takers)
Neg = Anions - +
Many metals and non-metals have predictable charges- let’s label our periodic tables now!

16. Writing and Naming Simple Ionic Compounds
Example:
Sodium & Oxygen
Na2O
Sodium Oxide
1) Metal first and keep their name
2) Non-metal is 2nd and ends in – ide
(POLYATOMIC ION NAMES DO NOT CHANGE!)
3) Total charge must = Ø
4) Subscripts = number of atoms
5) Reduce subscripts
Use atom puzzle pieces 2+ 2- Ø

17. You try writing the formula:
1. Potassium & phosphorus 2. Calcium and Bromine
K3P
CaBr2
Now name them!
Potassium Phosphide
Calcium Bromide

18. Exit Task You try writing the formula and name :
NaI - Sodium Iodide Mg3N2 – Magnesium Nitride
AlF3- Aluminum Fluoride BaS - Barium Sulfide
Sodium & Iodine
Magnesium & Nitrogen
Aluminum & Fluorine
Barium & Sulfur