Once you’re in, you’re in.
When the bell rings, voice at zero, working on the Do
Now in Do Now Form.
Pick up daily handouts. Pick up a Do Now Form. Pick up
turned back docs. Pick up a white board, 1 sock, 1 dry
erase marker. Keep your marker in the “parking spot”
until further instructed.
Do Now 10/8/2013
• Draw the Lewis dot structure for the following two
IONIC bonds
– Sodium and Oxygen
– Magnesium and Iodine
• Write the noble gas configuration for the following
– Aluminum
– Iron
Do Now 10/7/2013
• Draw the Lewis dot structure for the following
two IONIC bonds
– Sodium and Oxygen
– Magnesium and Iodine
• Write the noble gas configuration for the
following
– Aluminum
– Iron
Tutoring and Makeup Work
• Tuesday/Thursday this week; Wednesday at
Lunch
• THREE weeks left in the quarter – if your name
is on the board , you owe me a quiz or a test!!
• If you have a zero and you think you turned it
in I have passed it back to you and you need
to turn in again either graded or with proof it
was turned in on time for full credit
Grade Example
• Test 1 – 80
• Quiz 1 – 100
• Test 2 – 75
• Report 1 – 0
• Report 2 – 0
• Test 3 – 77
Average = 55%
• Test 1 – 80
• Quiz – 100
• Test 2 – 75
• Report 1 – 50
• Report 2 – 50
• Test 3 – 77
Average = 72%
Test 1 – 80
Quiz 1 – 100
Test 2 – 75
Report 1 – 80
Report 2 – 90
Test 3 – 77
Average = 84%
Homework
• Naming Worksheet – From Thursday last week on
the back of guided notes
• Bohr Test Corrections (up to 4 points) Parent
Signature, corrections on the back DUE
TOMORROW**
• VSPER Model worksheet (underline Lewis dot,
shape, bond angles)**
**Graded
Bohr Model Test
- Hand back
- Review common mistakes
Upcoming Dates
• 10/9/2013 – Nomenclature and Formula Quiz
• 10/10/2013 – Naming and Formula Test
Objectives
SWBAT
•Explain how covalent bonding in compounds determines its characteristics
•Determine that a bond is predominately covalent by the location of the atoms on
the Periodic Table
•Apply the concept of electrons form covalent compound that is stable
•Write names of ionic and covalent compounds
•Based on Lewis Structure of a compound determine the geometry and bond angles
Pop call
Bonding Review – Hands up, Pair up
• Metallic
• Ionic
• Covalent
Covalent Bonding Practice
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•
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2 oxygen
2 fluorine
2 Bromine
HBr
SiF4
N2S3
Naming Review
• Ionic
– Rules?
– Between what types of elements?
– Compounds/molecules?
• Covalent
– Rules?
– Between what types of elements?
– Compounds/molecules?
wb
Ionic Naming Practice
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•
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NaBr
Zn3P2
NH4F
Pb3N2
CdSO3
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Sodium bromide
Zinc phosphide
Ammonium flouride
Lead (II) nitride
Cadmium sulfite
Ionic Formula Practice
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Calcium Bromide
Sodium Hydride
Potassium hydroxide
Platinum (II) sulfide
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CaBr2
NaH
KOH
PtS
Covalent Naming Practice
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P4S5
O2
SeF6
CH4
SCl4
NF3
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Tetraphosphorus pentasulfide
Oxygen
Selenium hexaflouride
Methane
Sulfur tetrachloride
Nitrogen trifluoride
VSEPR Model
(Valence Shell Electron Pair Repulsion)
The structure around a given atom is
determined principally by minimizing
electron pair repulsions.
Electron pairs centered around a central
atom tend to orient themselves as far apart
as possible
Used to predict geometry of a molecule or a
polyatomic ion
Predicting a VSEPR Structure
 Draw Lewis structure.
 Put pairs as far apart as possible.
 Determine positions of atoms from the way
electron pairs are shared
 Determine the name of molecular structure from
positions of the atoms.
Steric Number 1
1 atom bonded to another atom (reference handout)
Steric
No.
Basic
Geometry
0 lone pair
1
linear
1 lone pair
2 lone pairs
3 lone pairs
4 lone pairs
Steric Number 2
2 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom. Lone pair means a
NOT bonded pair.
Steric
No.
2
Basic Geometry
0 lone pair
linear
1 lone pair
linear
2 lone pairs
3 lone pairs
Steric Number 3
3 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom.
Steric
No.
Basic Geometry
0 lone pair
1 lone pair
2 lone pairs
bent / angular
linear
3
trigonal planar
3 lone pairs
Steric Number 4
4 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom.
Steric
No.
Basic Geometry
0 lone pair
1 lone pair
2 lone pairs
3 lone pairs
bent / angular
linear
4
tetrahedral
trigonal
pyramid
Steric Number 5
5 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom.
Steric
No.
Basic
Geometry
0 lone pair
1 lone pair
2 lone pairs
3 lone pairs
trigonal
bipyramid
sawhorse /
seesaw
t-shape
linear
5
Steric Number 6
6 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom.
Steric
No.
Basic
Geometry
0 lone pair
1 lone pair
2 lone pairs
Octahedral
square pyramid
square planar
6
3 lone pairs
Steric Number 7
7 atoms, or lone electron pairs, or a combination of
the two, bonded to a central atom.
Steric
No.
Basic
Geometry
0 lone pair
1 lone pair
pentagonal
bipyramidal
pentagonal
pyramidal
7
2 lone pairs
3 lone pairs
Lewis Structure and VSEPR practice
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Carbon Tetraflouride
BF3
NF3
H2CS
Carbonate ion (CO3)
Finish this sheet for HW