G RADE 10: C HEMISTRY
T OPIC : R EPRESENTING I ONIC
C OMPOUNDS
Date: Wednesday, March 20 th , 2013

E LEMENT OF THE D AY

E LEMENT OF THE D AY : L ITHIUM
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Atomic Number: 3
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3 Proton, 3 Electron
Atomic Weight: 6.941
Location: Group 1
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Alkali metal
Soft, light metal
Floats on water
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Reacts with water to release hydrogen gas

E LEMENT OF THE D AY : L ITHIUM
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Why is Lithium cool to learn about?
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Used in Lithium-ion batteries
Powers many devices
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Pacemakers
Laptops
Cars
Emotional balance
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Controls mood swings caused by bipolar disorder

E LEMENT OF THE D AY : L ITHIUM
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Lithium video
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Stop at 2:00 http://www.youtube.com/watch?v=wY0afMI4Jgc

C LASS A CTIVITY #1
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Name each compound:
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LiF 
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BeO 
Na
3
N 
MgCl
2

CeI 
NaCl 
CaC
2

CaO 

C LASS A CTIVITY #2

Write the formula and compound formed by each of the following:
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Calcium and Sulfur 
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Magnesium and iodine 
Aluminum and chlorine 
Barium and Oxygen 
Lithium and Iodine 

C LASS A CTIVITY #3: “T AKE M Y E LECTRON
P LEASE ”
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
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Work on the sheet titled, “Take my Electron
Please”
Follow the example at the top
Hand in when finished

F ORMING I ONIC C OMPOUNDS
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Extra Help with Forming Ionic Compounds:
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Review
What is an ionic bond?
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Physical Properties
Common Ionic Bonds
Quiz http://www.education.uoit.ca/lordec/ID_LORDEC/ioni c_compounds/law_ionic_compounds.swf

S UPPORTING D OCUMENTS
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ON Science 10 Textbook
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Pages: 139-145
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Chapter 4 Power Point for ON Science 10
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Slides: 14-22
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Chapter 4 Notebook - pages 11-22
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“Take My Electron Please” Worksheet
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Websites: http://www.education.uoit.ca/lordec/ID_LORDEC/ ionic_compounds/law_ionic_compounds.swf

H OMEWORK
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ON Science 10 Textbook
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Page #: 142
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Questions: 1-4
Page #146
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Questions:5-8

H OMEWORK A NSWERS
Pg. 142
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1. The number of valence electrons determines the number of bonds that can/will be made.
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2. –ide
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3.
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a. magnesium bromide
b. calcium iodide
c. aluminum oxide
d. potassium chloride

H OMEWORK A NSWERS
Pg. 142
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4. Example: Naming rules mean a lot of information is reliably contained in the name. Peoples’ surnames, for example, link them to their ancestors and often provide clues about their cultural heritage.
Pg. 146
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5. Aluminum’s valence electrons are transferred to three chlorine atoms to complete their valence shells.
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6. Diagram should show that each of two chlorine atoms gains one electron from a magnesium atom to complete their valence shells.

H OMEWORK A NSWERS
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7.
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a. Na
b. Li
c. AlI
3
N = 3(Li 1+ ) + N 3– = 0
d. Ba
3
2
O = 2(Na 1+ ) + O 2– = 0
3
= Al 3+ + 3(I 1– ) = 0
P
2
= 3(Ba 2+ ) + 2(P 3– ) = 0
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8.
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a. K2S
b. Li2Se
c. ZnO
d. RbBr
e. C2S
f. S3N

B INARY I ONIC C OMPOUNDS
C LASS Q UESTIONS & A NSWERS
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Name each compound:

LiF  lithium fluoride
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BeO  beryllium oxide
Na
3
N  sodium nitride
MgCl
2
 magnesium chloride
CeI  cesium iodide
NaCl  sodium chloride
CaC
2
 calcium carbide
CaO  calcium oxide

B INARY I ONIC C OMPOUNDS
C LASS Q UESTIONS & A NSWERS

Write the formula and compound formed by each of the following:

Calcium and Sulfur  CaS
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Magnesium and iodine  MgI
2
Aluminum and chlorine  AlCl
3
Barium and Oxygen  BaO
Lithium and Iodine  LiI

“T AKE M Y E LECTRON P LEASE ”
W ORKSHEET A NSWERS