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Everyday Lives Drinking Water
666 wordsFluorine, with a chemical symbol of F and an atomic number of 9, was discovered by Karl Schedule in 1771 but not isolated until 1886 by Henri Moissan. The world fluorine comes from the Latin word four, meaning, flow. The element is a chemically reactive, poisonous, and highly corrosive Halogen gas that is found in group 17 (or View) of the periodic table. The electron configuration of Fluorine is (He) 2 s 22 p 5. Fluorine is the most chemically active nonmetallic element and the most electronega...
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Acetic Acid H 3
842 wordsIn the simple formalism proposed independently by Bronsted and Lowry in 1923, an acid was defined as a proton donor and a base was defined as a proton acceptor. In the simple acid-base reaction shown below, H 3 O+ is termed a Bronsted Acid, and HO- a Bronsted Base. In writing organic reaction mechanisms, the flow of electrons is often shown using "curved arrows" and in the example shown, the arrows are designed to show that an unshared pair of electrons from hydroxide anion moves to abstract a p...
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Johannes Van Der Waals
1,122 words... slightly negative and the other end of it is slightly positive. The Dispersion forces exist between non-polar molecules. Dispersion forces are another of van der Waals' three forces. They exist between non-polar molecules. It is important to remember that within a bond, electrons are constantly MOVING. They zoom around the atoms really quickly. As a result, there may be a tiny instant in that time span where the electrons happen to dominant on one side, rather than the other. However, this t...
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Eoanthropus Dawson British Museum Piltdown
752 words1. A hoax A hoax: n. 1. Practical joke 2. Deceptive trick 3. Play trick upon 4. Decide example: Piltdown Man For forty years they were considered one of the archaeological finds of the century: A fragment of jaw and a part of a skull that could prove man evolved from the apes. They were the bones of Eoanthropus dawson found near Piltdown Common in Sussex. The bones of the "Missing Link. " Not since 1953 the name "Piltdown" hasn't been associated with great scientific discovery, but great scienti...
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Tooth Decay Drinking Water
719 wordsHow would you feel if someone came along, and made you take medicine without your knowledge or consent? Saying that this would be beneficial without a notification as to what this was, or any background information on it. How would you feel if politicians in your city have benn adding a corrosive poison into your drinking water? They do this because they believe it will benefit your health in the future? Well believe or not, this has been happenin in many cities around the country for a long tim...
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White Blood Cells Parts Per Million
1,742 wordsFlouridation In 1931 at the University of Arizona Agricultural Experiment Station M. C. Smith, E. M. Lantz, and H. V. Smith discovered that when given drinking water supplied with fluorine, rats would develop tooth defects. Further testing by H. T. Dean and E. Else of the United States Public Health Service confirmed this report, and stated that what is known as mottled tooth. Mottled tooth is a condition in which white spots develop on the back teeth. Gradually the white spots get darker and da...
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