2009families
TRANSCRIPT
Families
January 19, 2010
Objectives
1. Identify the number of valance electrons in an atom
2. Explain why elements in a family have similar characteristics
3. Describe general properties of the families
Alkali Metals
Soft, silvery colored metals
Very reactive!!!
They react violently with water and oxygen so they need to be stored in oil.
Alkali Metals reacting with water:
Alkaline Earth Metals
Silvery-White Metals
Fairly reactive
Many are found in rocks in the earth’s crust
Transition Metals
Malleable
Ductile
Most are good conductors of electricity
Lanthanide Series
Actinide Series
Shiny, reactive metals
radioactive
BORON FAMILY
Group 33 valence
electrons Most are metals
CARBON FAMILY Group 44 valence
electrons
Contains metals, metalloids, and a non-metal Carbon (C)
NITROGEN FAMILY Group 55 valence electrons
Can share electrons to form compounds
Contains metals, metalloids, and non-metals
OXYGEN FAMILY Group 66 valence
electrons
Contains metals, metalloids, and non-metals
Reactive
Most are poisonous; form salts
Fairly reactive
Poor conductors of electricity
Halogens
Unreactive
Gases at room temperature
Noble Gases