1. Metallic Bonds
Quartz

2. Metals consists of closely packed cations and loosely held valence electrons that are mobile and can drift freely from one part of the metal to another.

3. Sea of electrons model Metallic bonds are the forces of attraction
between the free-floating valence electrons
and the positively charged metal ions.
Sea of electrons model

4. Properties of Metals
Metals are good conductors of electric current because electrons can flow freely in the metal.

5. Metals are malleable and ductile.

6. Crystalline Structure of Metals
Metals are crystalline.
Metal atoms are arranged in very compact and orderly patterns.
Metals can have the following arrangements of atoms:

7. Crystalline Structure of Metals
Chromium
Gold
Zinc

8. ALLOYS
Alloys are a mixture of two or more elements, at least one of which is a metal.
Brass is an alloy
of copper and zinc.
Bronze is an alloy
of copper and tin.
Sterling silver:
92.5% silver
7.5% copper

9. STEEL
Steel is an alloy composed largely of iron and a lesser amount of carbon, along with other metals.