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Monday, November 5

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 !. Tuesday, November 6. Take out your notes from Chapter 6: Chemical Bonding

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Monday, November 5

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  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

  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 = 180o • Type: AB2 • Ex. : BeF2

  10. Linear • BeH2 • CO2

  11. Trigonal Planar • 3 atoms attached to center atom • 0 lone pairs • Bond angle = 120o • Type: AB3 • Ex. : AlF3

  12. Trigonal Planar • BCl3 • BH3

  13. Tetrahedral • 4 atoms attached to center atom • 0 lone pairs • Bond angle = 109.5o • Type: AB4 • Ex. : CH4

  14. Tetrahedral • PO4

  15. Trigonal Bipyramidal • 5 atoms attached to center atom • 0 lone pairs • Bond angle = • equatorial -> 120o • axial -> 90o • Type: AB5 • Ex. : PF5

  16. Trigonal Bipyramidal • PCl5

  17. Octahedral • 6 atoms attached to center atom • 0 lone pairs • Bond angle = 90o • Type: AB6 • Ex. : SF6

  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 = 104.5o • Type: AB2E2 • Ex. : H2O

  20. Bent/Angular • NO2

  21. Trigonal Pyramidal • 3 atoms attached to center atom • 1 lone pair • Bond angle = 107o • Type: AB3E • Ex. : NH3

  22. Trigonal Pyramidal • PCl3

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