You Will Need:1. Pencil, Colored Pencils2. Ionic & Covalent Bonding Pgs. 9 & 10

(Pick-up from bookshelf)3. Log #3 – update with points4. Textbook – Open to a Periodic Table

You will need 40 3 x 5 cards1. Print out Questions & Answers

hyperlinked on Learning Point• Glue, Staple or Tape Questions on

the Front and Answers on the back OR• You can write out the questions &

answers2. Due at the beginning of class on Friday3. Quiz on Friday

Forming Sodium Chloridehttp://www.youtube.com/watch?v=2mzDwgyk6QM

Before (pg. 233) After

Questions:1)Why does Sodium become an Ion? 2)Is it Positive or Negative? Why?3)Why does Chlorine become an Ion? 4)Is it Positive or Negative? Why?

Questions:1)Why do Sodium and Chlorine bond?2)What is the overall charge of the compound?3)Does NaCl have the same characteristics as Na and Cl?4)What are some unique characteristics of NaCl?

Molecule Illustration Explanation Electron Dot (Color Code each element)

1. What kind of bond does Hydrogen & Oxygen make?

2. How do you know?3. Why does one Oxygen

bond with two Hydrogen atoms?

http://www.youtube.com/watch?v=ulyopnxjAZ8&feature=relmfu Drawing Lewis Dot Diagram Bonds

P=8N=8

P=1N=0

P=1N=0

1. Chemical Bonding joins atoms together to form ____________.

2. The valence of Carbon is? How do you know?

3. How many more bonds does Fluorine need to complete its octet?

4. What type of bond is most likely to occur between metals and nonmetals? Why?

5. When Iodine bonds with other elements it is more likely to gain or lose its valence electrons…Why?

6. Which type of bond is most likely to form a crystal latice….such as Sodium Chloride?

7. What is the difference between a cation and an anion?

8. A substance that is brittle is more likley formed by what kind of bond?

9. What kind of bond does water make? Explain

10. What is electronegativity?

P=8N=8

P=1N=0

P=1N=0

How do we determine the type of bond in a compound?

• Identify class of elements• Same class usually covalent• Opposite class usually ionic

• Calculate the electronegativity factor

What is ELECTRONEGATIVITY? A measure of how much an element wants an electron

How do you know the electronegativity factor of an element?

Look it up (see next slide)

What are the determining values for each type of bond?

0-0.4 = Non-polar covalent

.41-2.0 = Polar covalent

>2.0 = Ionic

http://www.youtube.com/watch?v=7DjsD7Hcd9U

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

ELECTRONEGATIVITY VALUES

0-0.4 = Non-polar covalent.41-2.0 = Polar covalent>2.0 = Ionic

Let’s try a couple:

P=8N=8

P=1N=0

P=1N=0

H2OCalculate the electronegativity factor

H = 2.2O = 3.44

3.44 – 2.2 = 1.24

NaCl

0-0.4 = Non-polar covalent.41-2.0 = Polar covalent

>2.0 = Ionic

Polar Covalent

Ionic

Na = .93Cl = 3.16

3.16 - .93 = 2.23

Compound Type of Bond Why Math Evidence

BF3Covalent

Same Side of Zig-Zag Line

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

ELECTRONEGATIVITY VALUES

0-0.4 = Non-polar covalent.41-2.0 = Polar covalent>2.0 = Ionic

Compound Type of Bond Why Math Evidence

BF3Covalent

Same Side of Zig-Zag Line

3.98-2.04= 1.94

0-0.4 = Non-polar covalent.41-2.0 = Polar covalent>2.0 = Ionic

Polar Covalent

All the Answers to your REVIEW questions are in your notes.

Remember to do a REVIEW and REFLECT on all 5 pages 10 sides.- In COLOR

This is due at the beginning of class tomorrow.

Homework:

1)Electrons and Chemical Bonding (5 pages 10 sides – Due Wednesday at the beginning of class.

Make sure to REVIEW and REFLECT on all pages

1)STAR Cards #61-101 – on 3x5 cards – Due Friday at the beginning of class