The document provides instructions for students to complete a packet on chemical bonding, including drawing Lewis dot diagrams and determining bond type using electronegativity values. Students are asked to draw Bohr models and complete notes up to page 6 for homework. Materials and scheduling for assessments are also included.

1. You Will Need:
1. Pencil, Text Book- Periodic Table,
Colored Pencils
2. CALCULATOR
2. Get out your 7 page packet
3. Textbook open to Periodic Table (196-
197)
YOU SHOULD HAVE 4 pages 7 sides to
your packet.
4. Test #3 Corrections and Parent
Signature - Due NOW

2. Please SCHEDULE:
1. To take Part 2 for the 1st time
OR to
2. Retake Test #3
• Part 2 – 101/145 or lower
3. Parent Signature and
Corrections – due TODAY.

3. Element Bohr Model Lewis Dot
(Symbol + Valence)
Lithium
Row = 2
1
Atomic # Electrons= 3-
2
Protons = 3+ P=3
N=4
Li
Atomic Mass
– Atomic # Neutrons = 4
7-3=
Neon
Row = 10 8
Atomic # 2
Electrons= 10-
Ne
P =10
Protons = 10+ N =10
Atomic Mass
– Atomic #
Neutrons = 10
20-10

4. Turn to the blank page #4 behind the Bohr Model
and Lewis Dot Diagrams
How to determine the type of Calculate the electronegativity
bond in a compound? factor
P=8
What isN=8
ELECTRONEGATIVITY? A measure of how much an
element wants an electron
How do you know the Look it up (see next slide)
P=1 P=1
N=0 N=0
electronegativity factor of an
element?
What are the determining 0
values for each type of bond? Non-polar covalent
.5
Polar covalent
1.7
Ionic

5. ELECTRONEGATIVITY VALUES
http://www.tutor-homework.com/Chemistry_Help/electronegativity_table/electronegativity.html

6. Let’s try a couple:
H2O Calculate the electronegativity factor
H = 2.1
O = 3.5
3.5 – 2.1 = 1.4 Polar Covalent
NaCl P=8
N=8
Na = .9
Cl = 3.0
P=1 P=1
3.0 - .0 = 2.1 Ionic
N=0 N=0
0
Non-polar covalent
.5
Polar covalent
1.7
Ionic

7. Let’s try a couple:
KCl Calculate the electronegativity factor
K = .8
CL = 3.0
3.0 - .8 = 2.2 Ionic
C = 2.5
CH4 P=8
N=8 H= 2.1
P=1
N=0
P=1
N=0
2.5 – 2.1 = .4 Non-polar covalent
What are the 0
determining values for Non-polar covalent
each type of bond?
.5
Polar covalent
1.7
Ionic

8. Let’s try a couple:
KCl Calculate the electronegativity factor
K = .8
CL = 3.0
3.0 - .8 = 2.2 Ionic
C = 2.5
CH4 P=8
N=8 H= 2.1
P=1
N=0
P=1
N=0
2.5 – 2.1 = .4 Non-polar covalent
CCl4
CO2
C16H34 (diesel fuel)

9. 1. Materials Manager Log in to
Learning Point – in charge of PPT
2. Complete Bonding Type
Identification
3. Complete Notes and Diagrams –
should be done up to page 6 for
homework
4. We will be working in class
tomorrow – Due at the end of the
period

10. Let’s try a couple:
KCl Calculate the electronegativity factor
K = .8
CL = 3.0
3.0 - .8 = 2.2 Ionic
C = 2.5
CH4 P=8
N=8 H= 2.1
P=1
N=0
P=1
N=0
2.5 – 2.1 = .4 Non-polar covalent
CCl4
CO2
C16H34 (diesel fuel)

11. Question Answer
What are the characteristics • Usually between Metals and Nonmetals
of Ionic Bonds? • Transfer of electrons – atoms become
IONS
• Form Crystal Lattices
• Brittle
• High melting and boiling points
• Dissolve easigly in water
• Form compounds
• Specific shape

12. Crystal Lattice

13. Question Answer
What are the characteristics • Usually between Metals and Nonmetals
of Ionic Bonds? • Transfer of electrons – atoms become
IONS
• Form Crystal Lattices
• Brittle
• High melting and boiling points
• Dissolve easily in water
• Form compounds
• Specific shape
Illustrate a neutrally charged Bohr
Model of an aluminum atom.
3
2 8
P=13
N=14

14. Question Answer
Illustrate a positively charged Bohr
Model of an aluminum atom. (3+)
8
2
P=13
N=14
Why is Al3+ considered an ion? (Look at all the subatomic particles before
you answer this question.)

15. Forming Sodium Chloride
http://www.youtube.com/watch?v=upg-FUHp6ys
http://www.youtube.com/watch?v=7DjsD7Hcd9U
Before (pg. 233) After
1
8 8
P=11 P=17
2 P=11 2 P=17 2 N = 12 N = 19
N = 12 N = 19 2
8 8 8
7
Questions: Questions:
1) Why does Sodium become an 1) Why do Sodium and Chlorine
Ion? bond?
2) Is it Positive or Negative? Why? 2) What is the overall charge of
3) Why does Chlorine become an the compound?
Ion? 3) Does NaCl have the same
4) Is it Positive or Negative? Why? characteristics as Na and Cl?
4) What are some unique
characteristics of NaCl?

16. Question Answer
What is a covalent bond? • Valance electrons are shared
• More often between nonmetal
• Low melting and boiling point
• Free flowing but can be brittle
• Form molecules
• Do not have a specific shape - flexible

17. C16H34 diesel fuel
Nonpolar covalent
C12H22O11
C6H10O5

18. http://www.youtube.com/watch?v=ulyopnxjAZ8&feature=relmfu
Drawing Lewis Dot Diagram Bonds
Molecule Explanation Electron Dot (Color Code
Illustration each element)
1. What kind of bond
does Hydrogen &
Oxygen make? How
P=8 do you know?
2. Why does one
N=8
P=1
Oxygen bond with
two Hydrogen
P=1
N=0 N=0
atoms?

19. 1. Schedule Test #3 retake
2. Bohr Model vs. Wave Model &
Lewis Dot + Electrons and
Chemical Bonding– Pgs. 1-7 –
due Thursday