1. Explain with references to chemical properties, why aluminium – the most common metallic element on our planet – was not extracted and used until the 19th century whereas gold, a much rarer element was one of the first metals used. (10 marks)
Gold was discovered around 6000 BC; it was first discovered in its Natural state un-combined. Gold can be found in the earth’s crust in two different types of deposits: Lode deposits which are deposits in solid rock and placer deposits which are found in stream beds. Aluminium is the 3rd most common element and the most abundant metal. However it was not extracted and used in its pure form until 1825 many years after Gold. Although Aluminium bearing compounds, have been used in pottery, paint and medicines since early civilisations. Aluminium is never found naturally, it is always found combined in a compound or ore. The reason aluminium is always found combined and Gold is found Un-combined is there reactivity. Gold is not very reactive therefore doesn’t reactive with other elements in its environment, however Aluminium is very reactive and reacts with many things within its environment resulting in it always being found combined. The development of both these elements throughout the years between their discovery and now shows us how far human technology has come from not being able to extract aluminium at all, too now Aluminium being the most produced metal on earth and gold becoming one of the most prized elements of all.
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for 4 metals: a. account for the uses in relation to their physical properties. b. list the energy input required to extract each metal from its most common . ore. c. Relate the energy requirement to each metals
Aluminum is the third most abundant element and most abundant metal in the Earth’s crust. Aluminum is never found in the free element state in nature. It
The global flow of silver effected the mid-sixteenth century to the early eighteenth century economically because silver made the world go round, socially because everyone was dependent on some sort of trade, and politically because silver was a high priority to important world powers. In this document based assignment, it would have been convenient to have a document about the opinion of either a Potosi Indian or a peasant from the commercial city of Hangzhou because both points of view would give further insight into the negative side of this time periods lust for silver, and how the insanity ruined lives.
middle of paper ... ... The Web. 22 Feb. 2014. http://www.chemheritage.org/discover/online-resources/chemistry-in-history>.
Due to the natural processes of magma flow, hydrothermal gradients, sedimentation, and evaporation, minerals are concentrated in various areas of the Earth’s crust. Obtaining these minerals for human use involves four general steps. • Locating the minerals • Then, extracting the minerals from the Earth in the form of ore or rock Then, processing (smelting) the ore to separate the impurities from the desired mineral. Finally, creating a useful product from the minerals. Procedure 1.
Gold has been valued in our cultural history for as long as societies have been able to adopt this valuable metal’s unique properties. Gold is unique in its inherent marvellous glossy shine. Gold is particularly malleable, conducts electricity, doesn’t blemish and blends well with other metals. Because of these exclusive properties, gold creates its ways in our everyday life in many ways or form. Gold has always had remarkable significance, shown by most civilizations as a symbol of wealth and power. Gold has captivated most of cultures around the world and the passion for it brings to the extermination of some cultures and the growth in condition of others. This essay explores the use of gold over time and perception of the cultures that surround by gold.
-Discuss the silver vs. gold argument, listing at least one argument for silver and one argument for gold.
the iron ore to iron. In the other cases of metals the most common way
Aluminum is the most abundant metallic constituent in the crust of the earth; only the nonmetals oxygen and silicon are more abundant. Aluminum is never found as a free metal; commonly as aluminum silicate or as a silicate of aluminum mixed with other metals such as sodium, potassium, iron, calcium, and magnesium. These silicates are not useful ores, for it is chemically difficult, and therefore an expensive process, to extract aluminum from them. bauxite an impure h...
I am going to discuss about the element known as gold in my assignment. To describe the element gold in simple terms, I can only say that it is an element (chemical element). This element is denoted by the symbol Au. It has an atomic number of seventy nine (79). I will describe quite a number of things concerning gold as an element. To begin with is:
Because other metals were thought to be less perfect than gold, it was reasonable to believe that nature created gold out of other metals found deep within the earth and that a skilled artisan could duplicate this process. It was said that once someone was able to change, or transmute a "base" chemical into the perfect metal, gold, they would have achieved eternal life and salvation. In this way, alchemy turned into not only a scientific quest, but a spiritual quest as well. Although the purposes and techniques were often times ritualistic and fanciful, alchemy was in many ways the predecessor of modern science, especially the science of chemistry.The birthplace of alchemy was ancient Egypt, where, in Alexandria, it began to flourish during the Hellenistic period. Also at that time, a school of alchemy was developing in China.
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In the world today there is not that much physical gold actually left. In total there would be about a 67-foot cube, which is roughly the size of a small office building. Gold is naturally forming so it cannot be created which makes it a very inflexible subst...
John Dalton�s Periodic Tables. 2014. John Dalton�s Periodic Tables. [ONLINE] Available at:http://www.sussexvt.k12.de.us/science/The%20History%20of%20the%20World%201500-1899/John%20Dalton's%20periodic%20tables.htm. [Accessed 12 May 2014].
Gold, nothing can compare to this precious metal. A symbol of wealth and prosperity, it has been a value for explorers and adventurers and a lure for conquerors. Today it is vital to commerce and finance; popular in ornamentation, and increasing importance in technology.
Wilson, David A. Alchemy: Creating Gold From Base Metal. Black Mountain, N.C.: Lorien House, 1988.