1. Unit 1 Chemical Bonding: Ionic
1.4 How does Ionic Bonding Work?
AIM: How does ionic bonding work and
how can we tell it happened??
DO NOW:
Draw the Lewis Structure for Calcium
How many electrons does Calcium want to gain or lose ?
Write the ion that is formed (don’t forget the charge!).
Why does an ion have a charge?
Does the radius of this Calcium ion increase of decrease? Ca 6 2
Ca+2
Because #P = 20 and #E=18

2. THINK MODELS
SKINNY MODEL is a POSITIVE (+) thing in the fashion industry
FAT MODEL is a NEGATIVE (-) thing in the fashion industry

3. REVIEW: HOW DOES AN ION FORM?
Lewis Dot Diagram Ba
Gain:_____
Lose:_____
Ion:
Charge: 6 Ba +2 +2 2

4. BOND. CHEMICAL BOND YOUR DEFINITION
Only the chemist can tell, and not always the chemist,
What will result from compounding
Fluids and solids.
And who can tell
How men and women will interact
On each other, or what children will result?
There were Benjamin Pantier and his wife,
Good in themselves, but evil towards each other:
He oxygen, she hydrogen,
Their son, a devastating fire.
-- Edgar Lee Masters, Spoon River Anthology
Ca 1916

5. Two or more kinds of atoms
WHAT IS AN BOND?
IN SCIENCE DEFINITION
A force that binds atoms in a compound together
Substance made of
Two or more kinds of atoms

6. WHAT IS A BOND?
TYPES OF BONDS
IONIC BONDS
COVALENT BONDS

7. COMPLETE A READING OUR DEFINTIONS OUR DEFINTIONS
DIRECTIONS: Read the passage and watch the videos to
Develop your own definition of each type of a bond.
OUR DEFINTIONS
IONIC BONDING
COVALENT BONDING
Bonds that are formed between ions due to TRANSFER OF ELECTRONS
Bonds that are formed between atoms due to SHARING OF ELECTRONS
OUR DEFINTIONS
Between metal and a nonmetal
Between two nonmetals
Conduct electricity when dissolved in solution
Usually liquid or a gas

8. Method that helps us determine what compounds
HOW DO WE BOND ATOMS?
CRISS-CROSS RULE
Method that helps us determine what compounds
form when atoms bond.

9. : : : : . : . : : : . : : . . . LET’S TRY SOME Mg F Mg F F Mg+2 F-1
DIRECTIONS: Complete the following using the
Information from the example.
MgF2
CH4 : : : :
LEWIS
DOT DIAGRAMS
Mg F . : . : : :
TRANSFER OF e- .
Mg F : : . F . .
IONS FORMED
Mg+2 F-1
Mg1F2
MgF2

10. NEXT Complete the INDEPENDENT PRACTICE
When you are done, you may work on the following:
CHEMISTRY VOCABULARY JOURNAL
- you will be allowed to use this on your quizzes and (some of) your exams