1. Q 2
Create a list of ways you can quickly predict whether two elements will create an ionic bond.
What are chemical formulas and why are they useful?
Write the names for these ions:
O Be Ba Br B Bi-3
Write a formula for each of the following
ions:
Carbide Chloride Calcium Cesium

2. Today’s Objective: I can name ionic compounds with polyatomic ions.

6. Oxidation Number: Number representing the charge an atom likes to obtain during ionic bonding

7. Polyatomic Ions: a group of atoms that are bonded together that act as a single unit-

8. NaCl: Hello. Let me introduce an ionic compound… Sodium Chloride
First Name:
Cation
Last Name:
Anion
NaCl:
Hello. Let me introduce an ionic compound…
First Name:
Last Name:
Sodium Chloride
Sodium
Chloride

11. Write the formula for
Magnesium Sulfide. +2 -2
MgS

12. Write the formula for
beryllium oxide. +2 -2
BeO
Beryllium Oxide

13. K2O Write & name the ionic compound created between
Oxygen and Potassium
K2O
Potassium Oxide

14. Chlorine and Magnesium
Write & name the
ionic compound
created between
Chlorine and Magnesium
MgCl2
Magnesium Chloride

15. Write the formula for
Lithium Nitrate
LiNO3

16. Write the
formula for
Sodium carbonate
Na2CO3

17. Write the
formula for
Sodium carbide
Na4C

18. Write the formula for
Potassium acetate
KC2H3O2

19. Metal + Nonmetal
Left side + Right side
+ oxidation number +
- oxidation number = 0

20. Oxidation Numbers add to 0
Ca+2
S-2
CaS
Calcium Sulfide
= 0

21. NaI
Na+1
I-1
Sodium Iodide
= 0

22. Name Formula Ammonium NH4+ Acetate C2H3O2- Chlorate ClO3- Nitrate NO3-
These are listed on your Periodic Table & Formula Sheet.
Name
Formula
Ammonium
NH4+
Acetate
C2H3O2-
Chlorate
ClO3-
Nitrate
NO3-
Hydroxide
OH-
Carbonate
CO32-
Sulfate
SO42-
Phosphate
PO43-

23. Oxidation Numbers add to 0
Na+1
OH-1
= 0
NaOH
Sodium Hydroxide

24. Ca+2
2Cl-1
Cl-1
+2+-1=1
+2+-2=0
CaCl2
Calcium Chloride

26. QQ:
Use Lewis Dot Structures to show the ionic bonding taking place between:
Sodium and chlorine
Magnesium and bromine
Potassium and sulfur
Aluminum and oxygen
Write the name and formula for each one.

27. Sodium Chloride
Magnesium Bromide
Potassium Sulfide
Aluminum Oxide