WebCopper, silver and gold were used in ancient times because these metals are stable and occur in the earth as metals. However, most other metals must be extracted from their ores in some way. In general the metals which combine most easily with other elements are the most difficult to extract from their compounds. WebThis means they can be found in a pure form (examples are gold and platinum). Because copper is relatively inexpensive and has a low reactivity, it’s useful for making pipes and …

Gold, Chemical Element - uses, elements, examples, metal, numbe…

WebApr 5, 2024 · carbon (C), nonmetallic chemical element in Group 14 (IVa) of the periodic table. Although widely distributed in nature, carbon is not particularly plentiful—it makes up only about 0.025 percent of Earth’s crust—yet it forms more compounds than all the other elements combined. In 1961 the isotope carbon-12 was selected to replace oxygen as … WebAnswer (1 of 3): Oh sure, a good example is the Au_2Cl_6 molecule, that forms by direct reaction between gold -particularly in spongy form- and … how much is gst in jersey

DK Science: Metals

http://www.chemistryexplained.com/elements/L-P/Phosphorus.html WebSome metals, such as gold, are found naturally as pure metals in rocks. Gold is unreactive, so it does not combine with other elements. Most metals are more reactive and are found combined with other elements in rocks. Iron, for example, is usually combined with oxygen. The rocks in which metals are found are called ores. WebIt is not combined with any other element. The most common compounds of gold are the tellurides. A telluride is a compound of the element tellurium and one or more other elements. For example, the mineral calavarite ... how do fannie mae and freddie mac work