1. 8  Bonding Metallic & Ionic Bonding

2. Metallic Bonding ExamplesPb Ag Au Cu Zn Fe
Brass (Cu + Zn)
Bronze (Cu + Sn)
Stainless Steel (Fe + Cr + C)

4. Properties – Metals Good conductors of heat and electricity.
Shiny and lustrous.
Malleable and ductile.

5. Metallic Bonding
Loosely held electrons shared by many metal atoms in a crystal lattice.
Lattice of + ions in a “sea of electrons”
Covalent bonding involves sharing, but only between two atoms at a time.

6. Ionic Bonding Examples
NaCl
KCl KI
FeCl3
CaCO3
CaCl2
MgSO4
Fe2O3
AgNO3
+ ion & - ion

7. Properties – Ionic Bonding
Brittle
High MP & BP
Dissolves in H2O
Conducts as (l), (aq), (g)

8. Electrical Conductivity

9. Ionic Bonding—Description
Metal loses electron(s). [+ ion]
Non-metal gains electron(s). [- ion]
Ions attract and form crystal lattice.

10. Ionic Bonding