1. Covalent LDS

2. pg54: I can create covalent LDS
Warm-up: Draw the LDS for Chromium (II) bromide.

3. Shoulder partner activity
You and your partner play rock paper scissors.
Face partners: winner plays winner
Whoever won will grab 1 tray with 2 baggies.

4. Task 1: Symmetry
Empty pieces onto your desk and sort them into dots, lines, shapes.
Use only 3 shapes where 2 are identical and make them touch.
Connect all flat touching edges with a line. (No circles)
Place a pair of dots on flat empty edges.
Draw this in your notebook

5. Task 1: Summary
What do the lines, dots, shapes represent?

6. Task 2: Rule of 8
Analyze this image. If everything needs 8 dots, how many dots are in 1 line? Why do we need 8? Check your shape. Fix it. Draw your corrected shape.

7. Task 3: Challenge Use 4 shapes. 1 must be a circle
Connect edges with lines
FLAT edges get dots
Follow the rule of 8.
Draw this in your notebook.

8. Covalent LDS Rules CO2 O C O O-C-O O-C-O O=C=O
Calculate the number of valence electrons available
Least electronegative atoms goes in the center
Place 1 line between atoms. Subtract shared electrons from valence.
Place remaining electrons as dots around atoms.
Check rule of 8.
C: 4
2O: 2x6=12
Total: 4+12=16
O C O
O-C-O
16- (2lines x 2e)= 12 dots ●● ●●
O-C-O ●● ●● ●● ●● ●● ●●
O=C=O ●● ●●

9. Practice:
CH H2O

10. Teachers to be Thankful for- 10 mins
Create a card for the teacher you are most thankful for. Please write their name on it somewhere. Put what wing they are in on the back: G, F, Q

11. Covalent vs. Ionic LDS
Each person must work on their own When timer rings EVERYONE stands up to check work Coach if needed, come to a conclusion, take a seat Lucky winner will draw it on the board!

12. H2S
Ionic or covalent? _____ Transfer or share?_____

13. HCN
Ionic or covalent? _____ Transfer or share?_____

14. Copper (II) chloride
Ionic or covalent? _____ Transfer or share?_____

15. SO3
Ionic or covalent? _____ Transfer or share?_____

16. K2O
Ionic or covalent? _____ Transfer or share?_____

17. CO3-2
Ionic or covalent? _____ Transfer or share?_____

18. ZnBr2
Ionic or covalent? _____ Transfer or share?_____

19. SO4-2
Ionic or covalent? _____ Transfer or share?_____

20. CH2Cl2
Ionic or covalent? _____ Transfer or share?_____