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11 6 Chemical Bonding Review
1. Launch: 11/6
Grab your binder and immediately take a seat!
Place homework (practice questions) on desk
1. Draw the correct Lewis structures for the following
atoms. Be sure to use the 3-steps!
i. HI
ii. PH3
iii. O2
2. Schedule
We have an exam on Tuesday!
Only today and Monday left for review.
We don’t have time to waste!
Follow our 7 class rules
You may not use inappropriate language
If you have a question, ask!
4. What is the octet rule?
The octet rule is…
all atoms want to have 8 valence electrons
except H and He
5. Why do atoms form
chemical bonds?
Atoms form chemical bonds…
to get 8 valence electrons (like the noble gases)
Chemical Bond
O
H H
6. What are the 3 types of bonds?
1. Ionic bonds
formed between a metal and a nonmetal
electrons are transferred
metal loses electron cation (+)
nonmetal gains electron anion (–)
stick together because electrostatic attraction
called “salts”
Cations
attracted to
neighboring
anions
7. Example #1
In an ionic bond, what ion would O form?
Step #1: metal or nonmetal?
Metals
8. Example #1
Example: In an ionic bond, what ion would O form?
Step #1: metal or nonmetal?
nonmetal = anion (–)
gain electron
9. Example #1
In an ionic bond, what ion would O form?
Step 2: how far away from the noble gases?
2 spaces away
10. Example #1
In an ionic bond, what ion would O form?
Step #3: write out the symbol and charge
Step #1: anion (–)
Step #2: 2 spaces away
2–
O
Is it a cation or an anion?
11. What are the 3 types of bonds?
2. Covalent bonds
formed between a nonmetal and a nonmetal
electrons are shared
2 types of covalent bonds
non-polar: equally
polar: unequally
12. What are the 3 types of bonds?
3. Metallic bonds
formed between a metal and a metal
electrons are shared
“free in the sea”
13. Example #2
Classify C2H4O2 as either an ionic, covalent, or metallic
compound.
Step #1: identify the atoms
C = carbon (X2)
H = hydrogen (X4)
O = oxygen (X2)
14. Example #2
Classify C2H4O2 as either an ionic, covalent, or metallic
compound.
Step #2: metal or nonmetal?
Metals
15. Example #2
Classify C2H4O2 as either an ionic, covalent, or metallic
compound.
Step #3: match the combination
a nonmetal, a nonmetal, and a nonmetal
Covalent