1. Covalent Bonding
Two Day Lesson

2. Identify the properties of covalent bonds
Objective
Today I will be able to:
Identify the properties of covalent bonds
Correctly name and write formulas for covalent compounds
Evaluation/ Assessment
Informal assessment – Listening to group interactions and student questions as they complete the webquest and covalent compound practice
Formal Assessment – Analyzing student responses to the exit ticket, webquest and covalent compounds practice
Common Core Connection
Build Strong Content Knowledge
Look for and make use of structure

3. Lesson Sequence Evaluate: Warm – Up (Day 1 and 2)
Explain: Covalent Bonding Notes (Day 1)
Engage/Explore/ Elaborate: Activity 1 or Activity 2 (Day 1 and 2)
1= Webquest
2 = Naming/ Formula Writing Practice
Elaborate: Ionic and Covalent Naming/Writing Practice (Day 2)
Evaluate: Exit Ticket (Day 1 and 2)

4. Warm Up – Day 1
When are roman numerals used in naming ionic compounds?
Try these problems without your pink sheet!
Write the ionic formulas and formula name for the following sets of ions:
K+ Br –
Fe2+ Cl –
Ba2+ SO42-
NH4+ CO32-

5. Warm Up – Day 2
How could you differentiate between an ionic and covalent compound in a lab?
What is a covalent compound composed of?
What is an ionic compound composed of?
Name the following covalent compounds:
SO2 CO
N2O5
Take a look at your exam. If you have questions please ask Ms. Ose

6. Objective Today I will be able to:
Identify the properties of covalent bonds
Correctly name and write formulas for covalent compounds

7. Homework Finish Webquest OR naming practice
Depending on the activity you completed today

8. Agenda Warm – Up (Day 1 and 2) Covalent Bonding Notes (Day 1)
Activity 1 or Activity 2 (Day 1 and 2)
1= Webquest
2 = Naming/ Formula Writing Practice
Ionic and Covalent Naming Practice (Day 2)
Exit Ticket (Day 1 and 2)

9. Covalent Bonds: Naming and Properties

10. Covalent Bonds Formed by sharing of electrons between atoms
Typically between two or more nonmetals
Ex. CH4

11. Covalent Bond Properties
Low melting and boiling point
Poor conductors
Not malleable or ductile

12. Covalent Bonds Electrons are not always shared equally
Two types of covalent bonds
Polar Nonpolar

13. Polar Covalent Bonds
When one atom is more electronegative than another, the shared electrons spend more time around it
Example: H2O

14. Nonpolar Covalent Bonds
Electrons are shared equally
Both atoms have similar electronegativities
Example N2

16. Electronegativity Differences between Bonds
Type of Bond
0.5 or less
Nonpolar Covalent
0.6 – 1.8
Polar Covalent
1.9 or greater
Ionic

17. Naming Covalent Compounds Notes

18. Remember the prefixes???? Prefix Number Mono - 1 Di - 2 Tri - 3
Tetra - 4
Penta - 5
Hexa - 6
Hepta - 7
Octa 8
Nona- 9
Deca - 10

19. Naming covalent compounds
For the first element, use the full name of the nonmetal with a prefix denoting how many atoms of that element
If there is only one do not use the prefix
For the second element change the ending to the suffix –ide, use a prefix to denote how many atoms that are present
Examples
SO2 – Sulfur dioxide
P2O5 Diphosphorus pentoxide
PCl3 – Phosphorus trichloride

20. Covalent Compounds Activities
Listen to Ms. Ose’s directions. You will complete the following activities over the next two classes. One activity will be completed in class today and the other will be completed tomorrow. Ms. Ose will divide the class in half.

21. Covalent Compounds Activities
Webquest
Use the computer to complete the webquest
No more than 3 people per computer
Ask Ms. Ose for help if you have questions
Covalent Naming Practice
Mol Monday # 1 (on Tuesday)
Complete the practice at your desk
Ask Ms. Ose for help if you have question
Both activities will be collected!

22. Mol Monday # 1
How many grams of phosphorous pentachloride are in 7.28 x 1026 molecules?

23. Ionic and Covalent Naming Practice
Complete the practice at your desk. Ask questions if you need help!

24. Ionic and Covalent Naming Practice Review
Trade papers with a partner nearby and check their answers!

25. Exit Ticket – Day 2
Determine if the compound is ionic or covalent. Then name the compound. CO
Al2O3
PCl5
BeO