why was a certain age named after this element?
UNANSWERABLE
where are the heaviest metals located in a periodic table Columns 3 to 16 which are some of these found in the environment? Iron, copper, tin, silver, gold, and platinum. what are the physical properties of the last element? It has excellent resistance to corrosion, is stable at high temperatures and has stable electrical properties. which country was the first to discover it? UNANSWERABLE do people invest in it? Yes, as it finds use in jewellery, usually as a 90–95% alloy, due to its inertness. what makes it more malleable? By alloying it with gold, dissolving the alloy in hot "aqua regia", precipitating the platinum with ammonium chloride, igniting the ammonium chloroplatinate, and hammering the resulting finely divided platinum to make it cohere. does it affect the health of humans in any way? Short-term exposure to platinum salts may cause irritation of the eyes, nose, and throat, and long-term exposure may cause both respiratory and skin allergies. what is the property of the element mentioned above that it is alloyed with? UNANSWERABLE of those elements found in the environment, what are the uses of the second one? It is used as a conductor of heat and electricity.
wiki:18871094
Copper [SEP] Copper Age
Copper occurs naturally as native metallic copper and was known to some of the oldest civilizations on record. The history of copper use dates to 9000 BC in the Middle East; a copper pendant was found in northern Iraq that dates to 8700 BC. Evidence suggests that gold and meteoric iron (but not smelted iron) were the only metals used by humans before copper. The history of copper metallurgy is thought to follow this sequence: First, cold working of native copper, then annealing, smelting, and, finally, lost-wax casting. In southeastern Anatolia, all four of these techniques appear more or less simultaneously at the beginning of the Neolithic c.