1. METALS
What are Metals?
Metals are elements which have the following Physical Properties:
Shininess
Malleability - Can be pounded into shapes
Hardness
Ductility - Can be pulled out into a wire ( ex coat hanger)
Conductivity - transmit heat & electricity easily

2. - Metals also have Chemical Properties:
Some metals are very reactive (they combine easily with other elements)
Group 1 metals are the most reactive and if they are exposed to air or water can explode.
Other metals such as gold are unreactive.

3. NONMETALS What are Nonmetals?
- In general the Physical Properties of nonmetals are opposite to those of metals
Nonmetals have the following Physical Properties:
Most nonmetals are gases ( O, He, H, N)
Most nonmetals are dull ( not shiny)
Not malleable (brittle) or ductile
Poor conductors of heat & electricity

4. Nonmetals also have chemical properties
- Most nonmetals (except Noble Gases: He,Ne, Ar,Kr,Xe,Rn) readily form compounds with other elements.