wiki Word: Alkali-earth metal

Definition: Very reactive elements in group 2 of the periodic table.

     Alkali-earth metals, also known to some as alkaline-earth metals, include beryllium,

 magnesium, calcium, strontium, barium, and radium. They are soft, silvery-colored metals. 

All of the elements in the alkali-earth metal group share most of the sme properties.

     All of the alkali-earth metals have 2 valence (vay-lince) electrons, or electrons in

their outer shells. When they bond, they lose these two electrons, to have a charge

of 2+. They easily react with elements in groups 16, which have 6 valence

electrons. Alkali-earth metals react violently with water, though not as violently as alkali metals.

      calcium-carbonate                      beryllium                           magnesium

     Alkali- earth metals are important to everyday life. Calcium is one of the main

things that keeps us strong and helps build our bones and teeth. Other alkali-earth

metals are found in compounds that are found in many places. Alkali-earth metals

are the second group of the periodic table of the elements. Right now in Mrs. Flynt's

class we are studying the periodic table. Knowing about alkali-earth metals helps us to

fully understand the periodic table.

Cite my sources- Here is the source I used to get my information on alkali-earth metals:

"Alkaline earth metal." Wikipedia, The Free Encyclopedia. 18 Mar 2008, 23:40 UTC. Wikimedia Foundation, Inc. 28 Mar 2008 <http://en.wikipedia.org/w/index.php?title=Alkaline_earth_metal&oldid=199216324>.

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