1. Integrated Physics Chemistry Week 7- Lesson 4 Electronegativity
Ms. Hartsell, Ms. Mac,
Mr. Wanninkhof, Mr. Wald

2. Do Now
Directions: Silently walk to your assigned seat and complete your
What is 1 similarity between ionic and covalent bonds? What is one difference?

3. Exploring Electronegativity
Agenda
Do Now
Exploring Electronegativity
Benchmark Lesson
Activity List

4. Students will be able to…
Learning Objectives
Students will be able to…
-Predict the type of bond that forms between two atoms with the electronegativity
- Define electronegativity based on atom’s atomic structure

5. Activity 1: Ion Explore
Directions: Complete the chart on your worksheet in order to explore electronegativity. Then follow the questions that come after to create a definition for electronegativity with your group!
Time: 10 minutes

6. Activity 1: Ion Explore

7. Benchmark Lesson
Share out: What was your group’s definition of “electronegativity?”
Support your definition of information from the table!

8. Benchmark Lesson
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.
Electronegativity represents how much an atom wants to gain an electron.

9. Benchmark Lesson
Fluorine is the most electronegative- wants to gain the electron the most! Francium is the least electronegative- want to gain the least.

10. Benchmark Lesson
We can use the electronegativities to determine if an ionic or covalent bond is going to form between the atoms in a compound.

11. Benchmark Lesson
Finding the difference between the electronegativity values!
If the difference is less than 1.7 = covalent
Difference greater than 1.7 = ionic!

12. Benchmark Lesson Example: N and O Step 1: N electronegativity = 3.0
Step 2: O electronegativity = 3.5
Step 3: Difference = = -0.5
Step 4: Important! Take absolute value! = +0.5
Step 5: Type of bond?
+0.5 is less than 1.7 = Covalent Bond!

13. Benchmark Lesson Check for Undestanding!
What is the bond between F and Na?
Step 1: Na electronegativity =
Step 2: F electronegativity =
Step 3: Difference =
Step 4: Important! Take absolute value! =
Step 5: Type of bond?

14. Benchmark Lesson Check for Undestanding!
What is the bond between F and Na?
Step 1: Na electronegativity = 0.9
Step 2: F electronegativity = 4.0
Step 3: Difference = = -3.1
Step 4: Important! Take absolute value! = +3.1
Step 5: Type of bond?
3.1 is greater than 1.7 = IONIC BOND

15. Activity List
Directions: Choose and complete at least 2 of the following activities:
Reading and Questions
Video and QAD Chart
Practice Problems