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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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British Medical Journal Cell Membrane
1,080 words... g to one or more of the classes listed here, including miscellaneous. To keep up with evolving bacteria, scientists are attacking efflux pumps. Efflux pumps are what microbes use to rid themselves of toxic materials and drugs. The way science is perusing this is to attach these pumps with compounds called efflux-pump inhibitors. These compounds have no infection fighting power but can make current antimicrobial drugs more effective (Christensen). Microbes that caused sickness in the pre anti...
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Nitrous Oxide Liquid Nitrogen
551 wordsNitrogen was isolated by the British physician Daniel Rutherford in 1772 and recognized as an elemental gas by the French chemist Antoine Laurent Lavoisier about 1776. Properties Nitrogen is a colorless, odorless, tasteless, nontoxic gas. It can be condensed into a colorless liquid, which can in turn be compressed into a colorless, crystalline solid. Nitrogen exists in two natural forms of isotopes, and four radioactive isotopes have been artificially prepared. Nitrogen melts at - 210. 01 C (- 3...
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Thousand Years Ago Fourteen Days
2,333 wordsThe first and most important step in brewing is cleanliness. "Brewing is ninety percent janitorial, " said Frederick Bowman, founder of Portland Brewing. (Bowman) The first step in the actual brewing process is malting. Malting is what is done to the barley to prepare it for brewing. The steps of the malting process release the starches that are contained in the barley, while minimizing haze and off-flavors. Grain is allowed to soak in 60 F. water to increase the moisture content of the grain to...
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H 2 O 2 O 2
709 words(H 2 O 2), a colourless liquid usually produced as aqueous solutions of various strengths, used principally for bleaching cotton and other textiles and wood pulp, in the manufacture of other chemicals, as a rocket propellant, and for cosmetic and medicinal purposes. Solutions containing more than about 8 percent hydrogen peroxide are corrosive to the skin. First recognized as a chemical compound in 1818, hydrogen peroxide is the simplest member of the class of s. Of the several processes of manu...
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Ch 2 Br Unsaturated Compounds Bromine
298 wordsThe element Bromine, is a red liquid which is explosive at room temperature and has a red brown vapour. It has an atomic number of 35 and an atomic mass of 79. 909. The melting point of Bromine is - 7 deg. C and the boiling point is 58 degC with a relative density of 3. 1. Bromine is a volatile dense mobile, that is a reddish brown liquid, which quickly gives a brown toxic valour with a disagreeable irritating odour. It combines directly with most elements although heat or a reactant is often ne...
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Naturally Occurring Million Years
630 wordsChlorine, symbol Cl, is a greenish-yellow gaseous element. In group 17 of the periodic table, chlorine is one of the halogens. The atomic number of chlorine is 17. Chlorine is a greenish yellow gas, which combines directly with nearly all elements. It is a gas at normal temperature and pressure, but because it is highly reactive it is not found as a gas in nature. Instead, it appears as naturally occurring organochlorine compounds and salts. It is commonly found as NaCl (solid or seawater). The ...
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Prince William Sound Advancement Of Science
1,394 wordsCleaning Up after the Exxon Valdez Was A Mistake Through many hours of research I have determined that the spill cleaning techniques used to clean the Prince William Sound area of Alaska did more harm than leaving the oil where it was. The Alaskan oil spill has become the most studied and managed event of its kind. Although there is not much that can be done about the marine life that came into direct contact with the crude oil, the geologic effects that the oil introduced into the area should h...
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Natural Enemies Chemical Compounds
2,301 wordsCoevolution, With Particular Reference To Herbivory Essay, Coevolution, With Particular Reference To Herbivory COEVOLUTION with particular reference to herbivore BIOL 0106 ASSESED COURSEWORK RORY AULD JANUARY 2000 COEVOLUTION WITH PARTICULAR REFERENCE TO HERBIVORY Of all the extant organisms in the world, it is believed that terrestrial plants and their natural? enemies? constitute more than forty percent. Moreover, plants exhibit a remarkable diversity of supposedly defensive characteristics in...
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Life On Earth Carbon Monoxide
498 wordsOrganic compounds are the basis of life on earth. The purpose of this discussion is research the importance of these compounds that make up life on earth. A wide variety of classes of substances, such as drugs, vitamins, plastics, natural and synthetic fibers, as well as carbohydrates, proteins, and fats, consist of organic molecules. Organic chemists determine the structures of organic molecules, study their various reactions, and develop procedures for the synthesis of organic compounds. The a...
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Nitrogenous Bases Amino Acids
1,451 wordsDeoxyribonucleic acid and DNA DNA Deoxyribonucleic acid and ribonucleic acid are two chemical substances involved in transmitting genetic information from parent to offspring. It was known early into the 20 th century that chromosomes, the genetic material of cells, contained DNA. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn McCarty concluded that DNA was the basic genetic component of chromosomes. Later, RNA would be proven to regulate protein synthesis. (Miller, 139) DNA is the genet...
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Environmental Protection Agency Parts Per Million
596 wordsEnvironmental Protection Agency The Environmental Protection Agency, (EPA) in Edison, New Jersey is very successful in detecting and separating elements found in water. With it s expensive machinery and skilled workers the EPA proved to be successful in making New Jersey s drinking water safe. Throughout the tour, I picked up on some interesting and useful facts. I found myself very interested in exactly how many elements are found in water, how one goes about figuring out the name of the elemen...
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Guy Fawkes November 5
1,726 wordsGunpowder History Of Gunpowder GUNPOWDER Gunpowder is the oldest of all explosives. It was used by the ancient Chinese, Arabs, and people of India first. But exact directions on how to make it were not known to the western World until 1242, when Roger Bacon of Oxford University, in England published a book in which he told the ways to make gunpowder. Today gunpowder is not used as much as more powerful explosives After Roger Bacon published his formula for gunpowder, Berthold Schwarz, a German m...
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Boiling The Wort Fermentation Temperatures Beer
1,038 wordsThe first and most important step in brewing is cleanliness. The first step in the actual brewing process is malting. Malting is what is done to the barley to prepare it for brewing. The steps of the malting process release the starches that are contained in the barley, while minimizing haze and off-flavors. Grain is allowed to soak in 60. F. water to increase the moisture content of the grain to about 40 - 45 %. The grain is usually spread out on the floor of the germination room, or some other...
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Big Bang Theory Hundreds Of Years
896 wordsWhich was came first, the chicken or the egg? One cant come about without the other. So where did the first one come from? This is the question that, people in general as well as scientists, have been pondering for hundreds of years. There are several different beliefs, probably more scientific than Christian, and in this report I will tell you about four of them. Because there are so many scientific theories I will be telling you three of those and one of the Christian. The first theory I will ...
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Sulfur Dioxide Acetic Acid
1,936 wordsLead, symbol Pb, dense, bluish-gray metallic element that was one of the first known metals. The atomic number of lead is 82; the element is in group 14 (or IVa) of the periodic table. Lead was mentioned in the Old Testament. It was used by the Romans for making water pipes, soldered with an alloy of lead and tin. Few metals have been used in more different ways than lead. Lead ornaments and coins have been in use since ancient times. In the Middle Ages strips of lead called came's were first us...
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Cannabis Sativa Smoking Marijuana
1,424 wordsMarijuana Uncovered The rejection of any source of evidence is always treason to that ultimate rationalism which urges forward science and philosophy alike. This quote, by Alfred North Whitehead, is a perfect representation of what is happening in today s society concerning marijuana. Through scientific research, many pro-marijuana followers are trying to dig up the evidence needed to prove marijuana s abilities to heal and possibly cure a number of diseases. Marijuana, containing sixty known ca...
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Computers In Chemistry Large Companies Data
793 wordsThe Role of Computers in Chemistry Over the last few decades, the technology of computers has improved in leaps and bounds. Computers have become faster and easier to use, taking milliseconds to do the calculations which once had to be done by hand. There are several areas of chemistry where computers have played a significant role, a few of them I will discuss. In synthetic chemistry it is very important to know what compounds you have created. Chemists rely on spectroscopic techniques to analy...
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Carbon Atoms Ch 4
471 wordsElement? a substance which cannot be broken down into two or more substances by any means. Only contains one type of atom. Compound? a substance in which atoms of two or more elements have been chemically combined. Ionic Bonding · Metals bonding with non-metals · Involves transfer of electrons from metal to non-metal, so that both species obtain full outer shell electron configurations (Noble gas configuration). · Metals lose electrons to form positive ions (Cations). &middo...
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Chlorofluorocarbons Cfcs Sulphur Dioxide
3,209 wordsSpace: Pollution is a Global Responsibility The statement says that pollution is a global responsibility, but first of all, in order to understand the statement and therefore argue the points of view, we must state what can be defined as Pollution. The Oxford dictionary states that to pollute an area is to Destroy the purity or sanctity of; make foul or filthy; contaminate or defile There are many types of pollution that effect the environment on the universal scale and also on the microcosmic s...
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