1. Take out a piece of paper and a pencil, Nothing else.
Sit in your assigned seat, do not ask any questions and do not talk.
Wait for further directions when the bell rings.

2. Respect and the importance at school
What is respect?
Why does it matter in school?
How can we show it in the classroom?
How have you showed it and/or how you have not showed it in the classroom?
How is this all really respecting yourself?

3. Science Starter
What are 3 differences between ionic and covalent compounds?
What happens to make Ca -> Ca2+
What happens to make S-> S2-
**Turn in weeks science starter by passing them to the bin at the front**

4. Objective
SWBAT draw Lewis Dot diagrams of all elements in the s- and p-block
SWBAT identify charges of all s- and p-block elements based on the number of valence electrons and the octet rule
SWBAT properly write the chemical formula of ionic compounds

5. Agenda Science Starter Intro to Bonding Valence Electrons
Lewis Dot Diagrams
The Octet Rule
Charges
Ionic Puzzles
Work Time

6. Unit 3: Bonding and Nomenclature Lewis Dot Diagrams and Charges
February 26, 2016

7. RECAP! Valence Electrons
Valence electrons: electrons in the highest energy level (outer shell).
For representative elements, the group number represents the # of valence electrons.
# of valence electrons determines properties.

8. Identify the # of Valence Electrons.
Copy these down into your notes! Be F Ne As K S Rb Kr

9. Lewis Dot Diagrams
Electron Dot Diagrams (aka Lewis Dot Diagrams)- diagrams that show valence electrons as dots.
DIRECTIONS:
Write Chemical Symbol
Put one dot (representing electrons) on each side of symbol before you put a second one on that side.

11. Practice Element # of Valence Electrons Lewis Dot Structure Ga Xe Ca N

12. What is the Octet Rule?
Octet rule- in forming compounds, atoms tend to gain, lose, or share one or more of their valence electrons to achieve a filled outer electron shell.
aka atoms want the same # of electrons as the noble gases (typically 8 valence electrons)

13. Stop and Think:
Is it easier to move 6 boxes or 2 boxes?

14. Practice Time….

15. Charges How many valence electrons does Ca have?
How many does it want?
What is it going to do to get it?
How many valence electrons does N have?

16. Atoms only form certain ions.
Group 1 – 3 are GIVERS
They all have positive charges – they will give away ALL of their electrons
Group 14 elements are GIVERS or TAKERS
Group are TAKERS
They have negative charges. They steal their electrons.

17. KEY POINT QUICK RECAP INDEPENDENTLY: Metals- lose electrons
Nonmetals- gain electrons
QUICK RECAP INDEPENDENTLY:
What is a CATION?
What is an ANION?

18. When a nonmetal and a metal meet each other, they can’t share
When a nonmetal and a metal meet each other, they can’t share. They’re too different!
So…the nonmetal will GRAB electron(s) from the metal.

19. It forms an ION. Hence, the name IONIC bond
Ionic Compounds = made of a metal and a nonmetal

20. Ionic Puzzle Cut out the cation and anion puzzle pieces.
Place the cards together, adding additional cards of the same ion until the heights of the cations and anions are equal.
Count the number of each ion needed for the heights to be equal and record
You must make at least 5 ionic compounds before answering the questions on the back!

21. Foldable