1. Q/A
From looking at valence electrons, list all the elements that Mg would most likely bond with. Why ?
Mg will most likely bond with: O, S, Se, Te
They will bond because Mg wants to give two electrons away and the others want to take two.

2. Compounds
Atoms do not like to exist alone, they create bonds which shape and form matter.
These bonds are ionic, covalent, metallic and hydrogen.
How they form, and what they form to, help determine the bond.
It’s all about what is happening to the electrons.

3. IONIC

4. Ionic Compounds: When positive and negative ions transfer electrons
Na +1 Cl -1
They have opposite charges so they attract
Sodium gives one electron to chlorine
Ionic compounds combine metals to non-metals

5. Sometimes this isn’t a 1-1 ration.
Think of Calcium and Fluorine
Calcium- +2 electrons that it can lose
Fluorine- -1 electron that it needs
How can it make a stable compound ?

6. When Calcium and Fluorine combine, they need:
1 Calcium Atom
2 Fluorine Atoms
See for yourself, draw it out!

7. Ionic Compounds What’s special about Ionic Compounds?
They dissolve in water
When dissolved, the water + compound can conduct electricity
Why? Because they separate from each other and can now carry an electric current

8. Covalent

9. Covalent Bonds Share electrons
Formed from non-metals with other non-metals
They do not conduct electricity at any state
Examples; O2, CO2, C2H6, H2O, SiC

10. Metallic

11. Metallic Bonds Formed between atoms of metallic elements
Holds metals together very strongly
Include all alloys
Good conductors at all states, lustrous, very high melting points
Examples; Na, Fe, Al, Au, Co

12. Classwork
Complete Chemical Bonding Worksheet