The Periodic Table

1
The Periodic Table

• The Representative Elements
• 6.2

2

• Groups 1 2
• The Alkali Metals
• Silvery solids, low densities, low melting points
• From top to bottom become more ready to combine
  with other substances
• The Alkaline Earth Metals
• Denser, harder, higher melting points than alkali
  metals
• Active bun not as active as alkali metals
• Alloy - mixture of two or more elements, one of
  which is metal

3

• From Metals to Nonmetals
• Borons Family
• All metals, except boron
• The Carbon Group
• Carbon - nonmetal diamond, graphite
• Silicon, Geranium - metalloid
• Semiconductor - doesnt conduct electricity as
  well as metal, but does conduct better than a
  nonmetal

4

• Nitrogen Group
• Nitrogen and Phosphorus - nonmetals Needed for
  life
• Oxygen Group
• Oxygen, Sulfur, Selenium - nonmetals
• The Halogens
• Fluorine, Chlorine, Bromine, Iodine - nonmetals
• Halogens - salt former
• The Noble Gases
• Rarely combine with other elements
• Pg 170 1-4