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Gold is a chemical element with the symbol Au (from the Latin word aurum) and the atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals.
The Gold Star Lapel Button consists of a gold star on a purple circular background, bordered in gold and surrounded by gold laurel leaves. On the reverse is the inscription "United States of America, Act of Congress, August 1966" with space for engraving the initials of the recipient. See also. Blue Star Mothers Club; American Gold Star Mothers
Gold–aluminium phase diagram. Gold–aluminium intermetallic is a type of intermetallic compound of gold and aluminium that usually forms at contacts between the two metals. Gold–aluminium intermetallic have different properties from the individual metals, such as low conductivity and high melting point depending on their composition.
Colored gold. Ternary plot of different colors of Ag – Au – Cu alloys. Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements.
Background. In the past, purple dye was very expensive to produce, with the first compound used as one, Tyrian purple, being made from the mucus of a family of sea snail found only in the eastern Mediterranean and off Mogador Island near Morocco. To produce small amounts of it, it was required to obtain the mucus of thousands of snails, which ...
Purple haze refers to a state of mind induced by psychedelic drugs, particularly LSD. Wearing purple is a military slang expression in the U.S., Canada and the U.K. for an officer who is serving in a joint assignment with another service, such as an Army officer on assignment to the Navy. The officer is symbolically putting aside his or her ...
AOL Desktop Gold is convenient and Easy to Use We kept the design and features you love, to ensure a smooth transition to our latest version. All your usernames, passwords, toolbar icons and mail ...
Purple of Cassius is a purple pigment formed by the reaction of gold salts with tin (II) chloride. It has been used to impart glass with a red coloration (see cranberry glass ), as well as to determine the presence of gold as a chemical test . Generally, the preparation of this material involves gold being dissolved in aqua regia, then reacted ...
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