1. Monoatomic vs. Polyatomic Ions Naming Ionic Formulas

2. Common Core Connection
Objectives
Today I will be able to:
Differentiate between monoatomic and polyatomic ions
Write ionic formulas using the criss-cross and snap-it together methods
Informal assessment – monitoring student interactions and questions as we complete the writing formulas practice
Formal assessment – analyzing responses to the practice and exit ticket
Common Core Connection
Build strong content knowledge
Look for and express regularity in repeated reasoning

3. Lesson Sequence Evaluate: Warm-Up
Explore: Monoatomic vs. Polyatomic Ions
Explain: Writing Ionic Formulas (Snap-it vs. Criss-Cross)
Elaborate: Writing Ionic Formula Practice
Evaluate: Exit Ticket

4. Warm-Up Why do atoms form ions? What is an ionic bond?
What are the oxidation numbers of the elements below? Ca Po Ar

5. Objectives Today I will be able to:
Differentiate between monoatomic and polyatomic ions
Write ionic formulas using the criss-cross and snap-it together methods

6. Homework
Have a great Thanksgiving break!

7. Agenda Warm-Up Monatomic vs. Polyatomic Ions Writing Ionic Formulas
Snap-It
Criss-Cross
Writing Ionic Formulas Practice
Exit Ticket

8. Monoatomic vs. Polyatomic Ions
Watch Ms. Ose’s demo on the board and take notes.
Pass out pink sheet
Monoatomic vs. Polyatomic Ions

9. PINK SHEET and POLYATOMIC IONS LIST
Pass out to students
PINK SHEET and POLYATOMIC IONS LIST

10. Writing Ionic Formulas

11. Two Methods
Snap-It Together
Criss-Cross Method

12. Snap-It Together
Na1+ Cl1-
NaCl

13. Snap-It Together Practice
Ca2+ O2-
H+ I-
Al3+ P3-

14. Snap-It Together Answers
CaO HI
AlP

15. Criss-Cross Method

16. Criss-Cross Practice
Mg2+ Cl-
Na+ S2-
Fe3+ O2-

17. Criss-Cross Answers
MgCl2
Na2S
Fe2O3

18. Writing Ionic Formulas Practice
Complete the practice at your desk. Whatever you do not finish will become your homework.
Writing Ionic Formulas Practice

19. Exit Ticket Determine what is wrong in the following ionic formula
Al3Cl