Monday, November 5

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 Formula Lewis Structure Molecular Sketch Molecular 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 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 -gt 120o
• axial -gt 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

23
(No Transcript)