1. Metallic Bonds

2. Review of Chemical Bonds
Ionic= Metal + Nonmetal
Covalent= Nonmetal + Nonmetal
or Semimetal + Nonmetal

4. Covalent Bonds

5. METALLIC BOND bond found in metals; holds metal atoms together very strongly

6. Characteristics of Metals
Shiny
Ductile
Malleable
Good conductors of heat
Good conductors of electricity

7. Positive ions in a sea of electrons- electrons move around freely

8. Metals are shiny Electrons absorb photons of light and jump to a higher energy level. When they return to the lower energy level, energy is released as light

9. Metals conduct electricity Electrons move into the sea of electrons
Metals conduct electricity Electrons move into the sea of electrons. An equal number of electrons enter the metal as the number that exits the metal.

10. Metals conduct heat Electrons in the “electron sea” move more quickly when they are heated.

11. Metals are malleable The mobile sea of electrons allow them to deform
Metals are malleable The mobile sea of electrons allow them to deform. The cations are shielded from each other, preventing the metal from shattering

12. Metals are malleable Ionic compounds are not malleable
Metals are malleable Ionic compounds are not malleable. The force would push like charges close together causing a strong repulsion and they will shatter

13. Metals are ductile Metals are ductile for the same reason that they are malleable. Their conductivity and malleability make them ideal for making electrical wires.

14. Metals form crystalline solids
**Except Mercury!!