1. Monday, November 5 Take out your “VSEPR Theory” notes and new piece of paper Marshmallow lab tomorrow- Thank you Brianna L and Kristi H for donating supplies. Test Thursday, November 8!

2. Tuesday, November 6 Take out your notes from Chapter 6: Chemical Bonding When finished with lab today, begin working on homework questions. Reminders: Ch. 6 Review Homework due tomorrow Test Thursday, November 8!

3. Wednesday, November 7 Take out you Chapter 6 Review homework. Reminders: Test Thursday, November 8! Molecular Geometry Chapter 6 Vocab Lewis Structures Notes

4. Thursday, November 8 Turn in your Chapter 6 Review homework on front counter. When finish test, complete Ch. 7 Vocab words.

5. Chemical Bonding Lab Chemical FormulaLewis StructureMolecular SketchMolecular Geometry 1. H2O 2. NH3 3. CH4 4. C2H6 5. N2 6. CH2O

6. VSEPR Theory Valence Shell Electron Pair Repulsion

7. VSEPR Theory Predicts the molecular shape of a bonded molecule Electrons around the central atom arrange themselves as far apart from each other as possible Unshared pairs of electrons (lone pairs) on the central atom repel the most So only look at what is connected to the central atom

8. These are for molecules with only paired electrons around the central atom.

9. Linear 2 atoms attached to center atom 0 unshared pairs (lone pairs) Bond angle = 180 o Type: AB 2 Ex. : BeF 2

10. Linear BeH2 CO2

11. Trigonal Planar 3 atoms attached to center atom 0 lone pairs Bond angle = 120 o Type: AB 3 Ex. : AlF 3

12. Trigonal Planar BCl3 BH3

13. Tetrahedral 4 atoms attached to center atom 0 lone pairs Bond angle = 109.5 o Type: AB 4 Ex. : CH 4

14. Tetrahedral PO4

15. Trigonal Bipyramidal 5 atoms attached to center atom 0 lone pairs Bond angle = – equatorial -> 120 o – axial -> 90 o Type: AB 5 Ex. : PF 5

16. Trigonal Bipyramidal PCl5

17. Octahedral 6 atoms attached to center atom 0 lone pairs Bond angle = 90 o Type: AB 6 Ex. : SF 6

18. These are for molecules with both paired and unshared (lone) pairs of electrons around the central atom.

19. Bent/Angular 2 atoms attached to center atom 1 or 2 lone pairs of electrons Bond angle = 104.5 o Type: AB 2 E 2 Ex. : H 2 O

20. Bent/Angular NO2

21. Trigonal Pyramidal 3 atoms attached to center atom 1 lone pair Bond angle = 107 o Type: AB 3 E Ex. : NH 3

22. Trigonal Pyramidal PCl3