1. Objective/Warm-Up
SWBAT distinguish between ionic, covalent, and metallic substances.
Where on the periodic table are metals?
Where on the periodic table are non-metals?

2. Foldable Different types of bonding: Covalent Ionic Metallic
On the outside: put the name and a picture
Inside top: put properties
Inside bottom: put examples

3. Covalent

4. Properties of Covalent Compounds
Low melting and boiling points
Soft
Sharing of electrons
Some dissolve in water
Do not conduct electricity
NON-METAL WITH NON-METAL
Electronegativity difference < 2.0

5. Examples
Sugar
Water
Carbon dioxide
Oil
Wax

6. Ionic

7. Properties of Ionic Compounds
High melting and boiling points
Hard, brittle
Transfer of electrons
Most dissolve in water
Conduct electricity in liquid form or when dissolved in water
METAL WITH NON-METAL
Electronegativity difference > 2.0

8. Examples
NaCl (salt)
KBr
CaCl2
MgSO4

9. Metallic

10. Properties of Metallic Compounds
Malleable-can be hammered flat
Ductile-can be pulled into a wire
Luster-shiny
A “sea of electrons”
Good conductors of heat and electricity
METAL WITH A METAL

11. Examples
Gold
Copper
Sodium
Calcium
Magnesium
Platinum

12. Electrons occupy innermost shell first
Exposed electrons in outer shell responsible for bonding
Electrons being positively charged are attracted to the positive nucleus
Outer shells only get filled after inner shells have reached their capacity for electrons

14. Chemical bond
Force of attraction between atoms that holds them together
Whether someone is building a home or a very large buiding, cement will be used to bond the bricks and blocks of the buiding together
Atoms are the buiding blocks of matter, and instead of being held together by cement, the atoms of matter are held together by chemical bonds
The combining of atoms of elements to form new substances is called chemical bonding

15. Ionic vs. Covalent Bonds
Metal with a non-metal
Transfer of electrons
Follows
the octet
rule
Two non-metals
Sharing of electrons
Ionic
Covalent

16. Wrap-Up
Explain the following cartoon:

17. “Perhaps one of you gentlemen wouldn’t mind telling me just what outside the window you find so attractive…?” 17