Body 3.1 Metal 3.1.1 Name Gold is a transition metal with the chemical symbol Au, which is derived from the Latin word aurum (Wikipedia, 2007). The illustration included in the appendices section of this report shows the area of the periodic
Commodity Chain Essays: Apple Iphone 5 Part 1: Extraction One raw material that is an integral component in finished Iphone 4 product like I have here is Columbite-Tantalite or as it is commonly referred to "Coltan" is a dull black metallic ore capable of holding a high electrical charge. An ore is a type of rock that contains minerals with important elements including metals. Ores are traded internationally and comprise a large portion of the international market in raw materials, examples of well known ores with significant value are the metals Gold and Copper. In Coltan the desired minerals within the ore are Columbite, and Tantalite. Columbite is valued for being comprised of the element niobium, and Tantalite for containing the element tantalum.
Appearance Iodine: silver sphere solid Zinc Shot: Round flat silver Zinc Granular: pencil shaving like silver solid Potassium iodide: white thick powder Focus Question: How well does the appearance and solubility of iodine and zinc respectively compare with information presented in the CRC Handbook of Chemistry and Physics? The appearance and solubility of iodine and zinc that we observed n the lab are very similar to the information presented in the CRC handbook of chemistry and physics. The iodine pieces we observed in lab were insoluble in water, and soluble in potassium iodide (very soluble), mineral oil (slightly soluble), and alcohol (slightly soluble). This consigns with what the CSC handbook stated that’s potassium iodide,
3) One gram = 6.02 x 1023 amu. The mass of 1.66E-24g is 3.63 x 1047 4)If an atom has the amu of 197 it is Gold because gold is rounded of to 197 from
Abdul Gadoush Period 2 Chemistry Honors 1-16-14 Metal Gizmo 1. Purpose/Problem: The whole purpose to this experiment was to identify which metal of the following: Copper, Magnesium or zinc had the most occurring reactions in the constant chemicals that they were inserted in. The metal that had the least amount of reactions in each chemical would be the least reactant, and the metal that had the most occurring reactions in the chemical would be the most reactant. For this process to occur (make metal gizmos), Naugatuck Metal Works needs one highly reactive metal and another that isn't a reactive metal. - signs of chemical change = changes the shape and color, creates a gas, distributes heat, Etc.
Although, Ionic bonding is when an atom gives away elections to another atom, which only happens in a metal and a nonmetal, and they have high melting points and are soluble. By investigating the unknown
The one factor that chiefly characterized Egypt's relationship with Nubia through most of their history was exploitation. Nubia's most important resource for Egypt was precious metal, including gold and electrum. The gold mines of Nubia were located in certain valleys and mountains on either side of the Nile River, although the most important mining center was located in the Wadi Allaqi. That valley extended eastward into the mountains near Qubban (about 107 km. south of Elephantine).
CHEMISTRY OF COPPER Introduction Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductilemetal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish. It is used as a conductor of heat and electricity, a building material, and a constituent of various metal alloys. Copper was the first metal mined and crafted by man, and has been the most important one in the oldest times of history, because it was available in great quantities and was initially extractable almost at the surface of ground.
At Mount Gabriel, Co. Cork, a wooden pick, shovel, stone mauls and tapers of resinous wood to provide light were among the equipment found in mines dated to the Early Bronze Age. During the Early Bronze Age the principal products were made from sheet gold, and include sundiscs made from a thin sheet of pure gold. A geometric decoration (Zig Zags, concentric circles) was then beaten from the back using what was known as the “repousse” technique. sun dics The crescent-shaped gold collars called lunula, with expanded horn terminals set at right angles to the plane of the crescent, is the most characteristic gold object of the Irish Early Bronze Age. More than 100 are known from western Europe, of which more than 80 have been found in Ireland.
Essay: Discovery Of Gold In the ancient civilization of Ur, gold was found in the form of things such as wires in royal tombs. This use of gold has been dated as far back as 2600B.C. Gold is also mentioned in the bible many times, for example, in this passage from Exodus they refer to the clothes Aaron wore. “And they did beat the gold into thin plates, and cut it into wires, to work it in the blue, and in the purple, and in the scarlet, and in the fine linen, with cunning work.” At almost every stage of human history there will be recordings of use and discovery of gold. This essay will be discussing the gold rush that happened in Australia, 1851.