Lure of precious metals: Precious metals were a major pull factor for the west because everybody was looking for the opportunity to become wealthy individuals which was known as the American dream at that time. Gold and silver was the metals that every single person was looking for in the westward expansion‚ immigrants and citizens were willing to kill to get their hands on any gold or silver mine. The killing‚ weirdly enough‚ was mostly was the removal of Indians. The India wars: War was inedible
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Chemical Prperties of Metals Most metals are chemically reactive‚ reacting with oxygen in the air to form oxides over changing timescales (for example iron rusts over years and potassium burns in seconds). The alkali metals react quickest followed by the alkaline earth metals‚ found in the leftmost two groups of the periodic table. Examples: 4Na + O2 → 2Na2O (sodium oxide) 2Ca + O2 → 2CaO (calcium oxide) 4Al + 3O2 → 2Al2O3 (aluminium oxide) The transition metals take much longer to
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Purpose: In this lab‚ we will heat up a metal rod and measure how much it expands. We will calculate its Coefficient of Linear Expansion‚ α‚ and prove the formula for thermal expansion‚ ΔL = αLiΔT. Also‚ we heat up a known volume of methyl alcohol and calculate its Coefficient of Volume Expansion‚ β‚ and prove the formula for volume expansion of a liquid ΔV = βViΔT. Equipment: Hollow Metal Rods of different metals‚ Steam Generator‚ Stand‚ Burner‚ Flexible Hoses‚ Motion Amplifier‚ Micrometer
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Robert Lawrence and Edmund Stephens‚ two graduate students of geology from Columbia University‚ organized the Saline Salt Company in 1974. Keeping in mind the fact that every 1‚000 grams of seawater contains approximately 35 grams of various salts‚ the two men pictured limitless wealth for them by extracting these salts. Common table salt comprises 27 grams out of each 35 grams and is easy to extract; so‚ the men decided to begin producing it. They picked New Iberia‚ Louisiana as the ideal location
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Road salt‚ also called rock salt‚ is sodium chloride‚ chemically combined with NaCl. Na is the chemical abbreviation for sodium and Cl is the abbreviation for chloride. Table salt that we use is exactly the same chemical. The US Environmental Protection Agency has set limits on allowable levels of chloride in water but not sodium. In high concentrations both sodium and chloride can be harmful to aquatic organisms. Sodium is the primary concern for humans‚ as it can be harmful to people with high
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EPSOM SALT TO IMPROVE YOUR HEALTH We all deal with health problems. It doesn’t matter what stage of life you are in‚ Epsom salt can help you improve your health. I can promise that you’ll find something on this list that can help you improve your health; in fact‚ I’m sure there will be several things. Ease Stress From research and several studies‚ we have learned that when the body is stressed‚ it actually has low levels of magnesium and extremely high adrenaline levels. If you take a bath
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3. Why are stabilisation salts added to evaporated or condensed milks prior to heating? The heat stability of milk is of tremendous importance in the successful processing of milk and the manufacture of most dairy products. Appropriate application of heat becomes necessary not just for destruction of spore-resistant micro-organisms but also for the preservation of the most desirable product characteristics. However‚ milk should not coagulate on heating. Heat coagulation is chiefly caused by de-stabilization
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SALT WATER Introduction: Salt water refers to water that contains dissolved salts‚ known as saline water or seawater‚ water from oceans or seas. It is a home to varieties of aquatic animals‚ for example‚ fishes and snails. Some of these animals find it difficult to live in fresh water. If salt water animals go to live in fresh water they can not adapt the environment led to die to them. This essay aims to discuss the importance of salt water and the sub- types namely ocean‚ sea‚ and coral reefs
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Study of Gold metal Date: 14/01/2013 Submitted to: Dr Sami Habib Submitted by: Jamil Mahfoud (A1010659) I- General introduction about metals: a- Historical background Back to 6000 BC‚ process metallurgy is known as one of the oldest applied sciences. Despite that the form of metals was very basic but it has a big impact on the society because of its wide uses especially as tools for agriculture or hunting and even as artistic styles later on. There are 86 known metals so far that were
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Extrusion is the process by which a block/billet of metal is reduced in cross section by forcing it to flow through a die orifice under high pressure. • In general‚ extrusion is used to produce cylindrical bars or hollow tubes or for the starting stock for drawn rod‚ cold extrusion or forged products. • Most metals are hot extruded due to large amount of forces required in extrusion. Complex shape can be extruded from the more readily extrudable metals such as aluminium. * The products obtained are also
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