+ WELCOME!1. Organize the materials in your

folder in your binder

2. Grab a clicker and calculator today.

2. Get out your homework!

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•No Trash No Detention

•SIDE TALK RULE

•Unit 2 Tests

•Progress Reports

Small Business

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Are atoms nice sharers OR mean,

evil, disruptive sharers?

+1. Electronegativity: In a

______________ bond, it’s which atom usually has the shared valence electrons.

2. Electronegativity depends on the ________ and the number of _________ __________.

3. ____________ is the most electronegative element on the table.

Electronegativity

+1. As you move down a periodic

table atoms become __________.

2. As you move across the periodic table atoms become _________.

Electronegativity

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3. As you move across the periodic table atoms become _________ electronegative.

4. As you move down a periodic table atoms become __________ electronegative.

Electronegativity

+5. Polarity measures how

_________________ the charges are in an atom.

Polarity

+ MAD Skillz: Determine which bond is the most polar

1) Determine the electronegativity of each atom. 2) Subtract the bigger number from the smaller

number to get overall polarity.3) The bond with the largest overall polarity is the

most polar

Determine which bond is the most polar.

N-O, C-O, or B-O

+ MAD Skillz: Determine which bond is the most polar

1) Determine the electronegativity of each atom. 2) Subtract the bigger number from the smaller

number to get overall polarity.3) The bond with the largest overall polarity is the

most polar

Determine which bond is the most polar.

H-F, H-Cl, or H-Br

+6. A polarity arrow pictorially

represents the change in charge.

7. The plus end is ________________the arrow end is ________________

Polarity arrows

+ MAD Skillz: Determine which bond is the most polar

1) Determine which atom is more electronegative; it is the negative end

2) The more positive atom receives the positive end.3) The more electronegative atom receives the

negative end

Draw the polarity arrows for the following chemical bonds

H - Cl S - P

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Forensic Pathologist

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+ Guided Practice

Bankrupt!(with clickers!)

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+Independent Practice

When you are done raise your hand and I will give you a POM

You may not use notes on the POM

NO SIDE TALK RULE APPLIES!