ARTICLE REVIEW Bimetallism refers to a monetary standard or system based upon the use of two metals‚ traditionally gold and silver‚ rather than one (monometallism). This paper focuses on the factors which led to the decline of bimetallism as an international monetary standard. In the late 19th Century‚ bimetallism was replaced with monometallism as countries began to peg their currency to one metal‚ either gold or silver. Many reasons contributed to this. Bimetallism follows the Gresham’s Law
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Experiment: How would an increase in the atomic radii of the metals in period 4 affect the time it takes for a metal to react with HCl. Hypothesis: If Hydrochloric Acid is dropped on all of the metals in period 4‚ then the elements with the largest atomic radii will react faster with Hydrochloric Acid because atoms with bigger atomic radii are more likely to give their electron(s)
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Common Minerals and Their Uses Aluminum The most abundant metal element in Earth’s crust. Aluminum originates as an oxide called alumina. Bauxite ore is the main source of aluminum and must be imported from Jamaica‚ Guinea‚ Brazil‚ Guyana‚ etc. Used in transportation (automobiles)‚ packaging‚ building/construction‚ electrical‚ machinery and other uses. The U.S. was 100 percent import reliant for its aluminum in 2012. Barium A heavy metal contained in barite. Used as a heavy additive in oil well
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[pic] Intro Turn a calculator into a metal detector I recently discovered a really cool method in using a few household items to make a HomeMade Metal Detector! Heres how to make your own! Heres a link to the video : http://www.youtube.com/watch?v=_G5HzeIl9cY [pic] Step 1 What you need. All you need for this project is‚ an: AM Radio ‚ some tape ‚ and a small calculator. [pic] Step 2 Let’s Begin Begin by turning the AM radio on. Tune it to the high end
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determine challenging structures. Widely used by both specialists and non-specialists‚ XAS is a mature technology that is also enabling the advancement of new areas of science. Examples • identification of therapeutic target sites‚ such as the metal-binding sites that may be responsible for some of the pathological effects of Alzheimer’s disease • elucidation of the chemistry associated with enzyme catalysis‚ particularly in relation to the influence of redox or charge state on the electronic
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some percentage of their electronic waste to China or poor countries in Africa‚ where the waste is “recycled‚” or destroyed and stripped of its valuable metals. Though this seems like a good thing on the surface‚ because components are being repurposed‚ unregulated recycling centers burn or dissolve the plastic components to release the precious metals: a process that releases environmental contaminants into the air‚ land‚ and water that would otherwise remain trapped and inert in landfills (Robinson
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A clothing iron‚ also called a flatiron or simply an iron‚ is a small appliance: a handheld piece of equipment with a flat‚ roughly triangular surface that‚ when heated‚ is used to press clothes to remove creases. It is named for the metal of which the device is commonly made‚ and the use of it is generally called ironing. Ironing works by loosening the ties between the long chains of molecules that exist in polymer fiber materials. With the heat and the weight of the ironing plate‚ the fibers are
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1.Compare and contrast the crystal structures and crystal chemistry of quartz α-FePO4 and β-FePO4 FePO4 is an extremely distinct quartz as its cation is a transition metal. It is often looked in depth at temperatures ranging from 294K to 1073K. When it is at a relatively low temperature‚ we see the quartz at α-FePO4. It takes on a tetrahedral shape. At higher temperatures‚ the α-FePO4 will transition to β-FePO4 and takes on an octahedral shape. Very importantly‚ the temperature at which this transition
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Halogen Chalcogen Nitrogen Boron Carbon Transition Metals Earth Alkali Alkali Columns on the Periodic Chart are referred to as _________ of elements. -Families Families of Elements are similar in at least what three ways? -Charge‚ Electron configuration‚ Electron dot diagram‚ also they have similar properties What are the 3 properties of the Alkali family? -Soft‚ Shiny‚ Very reactive Compare the Alkali’s to the Alkali Earth metals. What is the difference in their properties? Why is there
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Inhibitor Researchers: Aguilar‚ Sandino Michael Angelo Alejo‚ Gymboy‚ Agripa‚ Cyril Ann‚ Baloloy‚ Alyssa Mae‚ Zamudio‚ Catherine Corrosion is the phenomenon of a material as a result of its interaction with its environment‚ which is applied mostly to metals particularly to their reaction with oxygen. Rust inhibitor that when added to liquids decreases the corrosion rates of a material. The researchers proposed for a rust inhibitor made of extract of squash seeds to prove if it is applicable as an alternative
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