gold(10 mark!!!)

2008-01-02 8:57 pm
who can tell me what is gold, give me 3 examples, use english, discrilbe it

回答 (2)

2008-01-04 3:26 am
✔ 最佳答案
Gold is a chemical element with the symbol Au and atomic number 79. It is a highly sought-after precious metal which, for many centuries, has been used as money, a store of value and in jewelry. The metal occurs as nuggets or grains in rocks, underground "veins" and in alluvial deposits. It is one of the coinage metals. Gold is dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow color traditionally considered attractive.


Medium of monetary exchange:In various countries, gold is used as a standard for monetary exchange, in coinage and in jewelry.
Jewelry:Because of the softness of pure (24k) gold, it is usually alloyed with base metals for use in jewelry, altering its hardness and ductility, melting point, color and other properties.
Gold leaf, flake or dust:Used on and in some gourmet foodstuffs, notably sweets and drinks as decorative ingredient
2008-01-02 9:09 pm
Gold is a element .It;s chemical symbol is Au
It has 79 protons
It is a solid metal.


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