1. Day 72
Metallic Bonding

2. Warm Up
What force holds two ions together in an ionic bond?

3. Agenda
(Covalent bonds)
Metallic Bonds
Visual Analogies

4. Learning Target
Part 3
I can describe what creates an attraction between two atoms in an covalent bond
Part 4
I can describe what type of elements form metallic bonds
I can describe what happens to valence electrons when metallic bonds are formed between atoms
I can describe what creates an attraction between atoms in a metallic

5. Turn to your covalent bonding notes
I can describe what creates an attraction between two atoms in an covalent bond

6. How covalent bonds form
Since the positive nucleus of each atom are attracted to the SAME pair of negative electrons a bond is formed between the atoms
Have 2 students get up and then have one hold something (modeling it)

7. Set up Cornell Notes
Title: Metallic Bonds

8. Metallic Bonding Is the attraction between atoms of the same metals
Energy levels of the atoms overlap
This allows free movement of electrons through the metal
This is called the “sea of electrons”
Attraction between electrons and different positively charged nuclei hold the metal together
Draw diagram on the board to show how energy levels overlap like a venn diagram and how the electrons freely move between the atoms because of their attraction to the + nucleus
Analogy: plate of honey (sea of electrons) and flies stuck to it (+ nucleus)

9. Animation
Metallic Bonding

10. Visual Analogy
Your goal is to create a visual analogy to demonstrate the similarities and differences the three types of bonds have
Analogies must include:
What happens to the valence electrons for each type of bond
Illustrate the attraction when the bond is form for each type
Include a caption describing your analogy

11. Example
The bone between the dogs represents the valence electrons. Since this is a covalent bond, each dog is sharing their valence electrons with one another.
The attraction for this bond is formed between the positive nucleus of the atom and the same pair of shared electrons.

12. Supplies you need Draw a subject from Ms. Crock
Pictures from Ms. Crock
Box of markers
Piece of chart paper
Scissors
Glue
Timer!

13. Visual Analogy: You have 33 minutes to complete this activity (set your timer!)
Analogies must include:
What happens to the valence electrons for each type of bond
Illustrate the attraction when the bond is form for each type
Include a caption describing your analogy

14. Share out
Each table group has 2 minutes to share out