metals

=The metals they found= toc

The wish for American gold helped waves of fuel for the exploration of the 16th century. What was once abundant in Central America and Mesoamerica was exploited by countries such as England, France and Spain. In Mexico, the precious stones such as jade and turquoise were abundant, as well, and considered sacred by indigenous peoples. When the Castilians arrived in the 1520s they admired the richness of the indigenous inhabitants apparently had its rich resource for granted.

**the metals they found **
gold silver

GOLD
it is a chemical element with the symbol **Au** and an atomic number of 79. Gold is a dense, soft, shiny metal and the most malleable and ductile metal known. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water. With exception of the noble gases, gold is the least reactive chemical element known. It has been a valuable and highly sought-after precious metal for coinage, jewelry, and other arts since long before the beginning of recorded history.



= SILVER: = The silver is a chemical element of atomic placed number 47 in the group 1b of the periodic table of the elements. His symbol is Ag (it comes from the Latin: argentum, from the Indus). It is a white, brilliant, soft, ductile, malleable metal of transition.

He is in the nature forming a part of different minerals or as free silver. It is very scanty in the nature, of which it represents a part in 10 millions of terrestrial bark. Most of his production is obtained as by-product of the treatment of the mines of copper, zinc, lead and gold. The metallurgy from his minerals is realized fundamentally by the cianuración:

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