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Sir Humphrey Davy Mattiessen Isolated Larger Lithium
426 wordsLithium, which is represented by the symbolic notation, Li, is the third element on the periodic table. The mineral Petalite (which contains lithium) was discovered by the Brazilian scientist Jos Bonifcio de Andrada e Silva towards the end of the 18 th century while visiting Sweden. Lithium was discovered by Johan August Arfvedson in 1817 during an analysis of Petalite ore. Arfvedson subsequently discovered lithium in the minerals spodumene and lepidolite. C. G. Gmelin observed in 1818 that lith...
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Lieutenant Jimmy Cross Ted Lavender
1,743 words... es of ammunition. You want my opinion, Mitchell Sanders said, there's a definite moral here. He put his hand oil the dead boy's wrist. He was quiet for a time, as if counting a pulse, then he patted the stomach, almost affectionately, and used Kiowa's hunting hatchet to remove the thumb. Henry Dobbins asked what the moral was. Moral? You know- Moral. Sanders wrapped the thumb in toilet paper and handed it across to Norman Bowker. There was no blood. Smiling, he kicked the boy's head, watched...
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Parts Per Million Degrees Centigrade
410 wordsUranium is a silvery-white element possessing a very radioactive and oxidizing character. Uranium retains a density of 19. 07 grams per cubic centimeter and a melting point of roughly 1, 132 degrees centigrade. With a boiling point of approximately 3, 818 degrees Celsius uranium is not an easy element to get to a melting or boiling point. The Periodic Table says that uranium has 92 protons and 146 neutrons thereby acquiring a atomic weight of 238 atomic mass units. Uranium burns readily in air a...
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Ecology The Study Of Plans Animals And Environment
1,192 words... ugh the changes occur gradually. Eventually a point is reached at which the environmental and species changes are minimal and species diversity is high. This relatively stable community is called a CLIMAX COMMUNITY. ECOSYSTEMS Many ecologists study communities in the context of an ecosystem, which includes interactions involving mineral cycling, energy flow, and population control. The study of ecosystems facilitates a functional approach to ecology. One of the major aims of ecological resea...
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Fossil Fuels Alternative Energy
511 wordsAlternative Energy resources are becoming a much bigger deal as the level of fossil fuels remaining on earth slowly depreciates. Another issue is pollution. Eventually we wont be able to use gas and oil in our cars they will run solely on something like solar energy. Things like Hydroelectric power have been around for many many years, just not with such magnitude or demand. There are four main kinds of alternative energy sources, they are: Solar Energy Solar energy is used to do various things....
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Starter Cultures Enzymes Skimmed Cow Milk Cheese
626 wordsPlace of Origin: Although snack-size sticks of mozzarella are now sold under this name, true string cheese originated in Syria, and often comes in a braided rope. The flavor is similar to mozzarella, but saltier. Ingredients: String cheese is usually made from Mozzarella cheese. The ingredients used to make Mozzarella cheese consists of: pasteurized part-skimmed cow's milk with starter cultures, enzymes, and salt. It can also come in smoked and unmoved versions, often with garlic and onion added...
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Lay Their Eggs Frogs And Toads Frog
994 wordsFrog is the common name for a species of amphibian that also includes toads. A very common question is "whats the difference between frogs and toads?" , the answer: none, except for the fact that toads lack the powerful legs that frogs have. "Where can frogs and toads be found?" , one might ask. They live in all parts of the world, except for Antarctica, but are mostly found in tropical areas. Frogs are small animals with smooth moist skin, and big eyes that can see in almost any direction. Most...
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Gas And Dust Nuclear Fusion
991 wordsAn Introduction to World History. "Any scientist, I think, will agree that in a hundred years time, many of the details of the story we tell now may look kind of cute and naive, because well have moved on beyond them. But if you happen to live now, " he concludes, "this is the best story going. " said David Christians and it is really true. We lived in a beautiful world but dont know a lot about cosmology, geology, archeology, and population and environmental studies. Today with the help of Davi...
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Friction At The Atomic Scale
1,010 wordsFriction at the atomic scale. From the article "Friction at the Atomic Scale" by Jacqueline Krim we learn that standard friction and friction at the atomic scale are quite different. In my summary paper I would like to try to explain that fact based on the article. Having used different apparatus, the scientists made an experiment to prove that physicists didnt pay enough attention to the study of frictions atomic level or nano tribology for a long time wrongly. However now it was determined tha...
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Hydrogen Bonds Hydrogen Ions
1,205 wordsProperties of Water Water is essential for life as we know it on earth. It is used by plants and animals for basic biological processes which would be impossible without the use of water. The origin of all life can be traced back to the water in the Earths precambrian seas. Water is also the universal solvent. It reacts with more elements and compounds than any other substance known to man. Water is a polar molecule made up of on atom of hydrogen and two atoms of oxygen. It is attracted to itsel...
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Life On Earth B And C
1,459 wordsCarbon dioxide is a colorless, odorless, non-toxic, and slightly acid-tasting gas. Sometimes referred to as a carbonic acid gas, the molecule consists of one atom of carbon joined to two atoms of oxygen. It occurs naturally in the atmospheres of many planets, including that of earth. Carbon dioxide is uniformly distributed over the earths surface at a concentration of about 0. 033 %, or 330 parts per million. It was called fixed air by the Scottish chemist and physician Joseph Black in the 1750 ...
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Chang Lin Tien Lin Tien University
339 wordsChang-Lin Tien I am doing my extra credit paper on Chang-Lin Tien. He is a professor of engineering at U. C. Berkeley. He is the first Asian American to hold a major research position at a University in the United States. Dr. Tien was born in Wuhan, China and was educated in Shanghai and Taiwan. He completed his undergraduate education at the National Taiwan University. He then came to the United States in 1956, where he earned a masters degree at the University of Louisville in 1957. He then ea...
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Chemical Reactions Three Types
890 wordsChemical Chemical Reactions CHEMICAL REACTIONS Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to speak of chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the ai...
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Formula For Silver Oxide 1 75 Grams Crucible
282 wordsSliver Oxide Lab Purpose: To find the chemical formula for Silver Oxide and to improve students skills with lab equipment. Hazards: Heat/FlameMidly hazardous chemicals Materials: Small Crucible and means of suspending it above a flameBunson Burner Accurate scale in gramsTongsProcedure: Place the crucible on your scale and record its weight when empty. Next, place approximately 1. 75 grams of silver oxide into the crucible, you do not have to be exactly on 1. 75 grams, but being within a tenth of...
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Dust Particles Solar System
1,011 wordsNeptune is the Neptune Neptune Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49, 500 kilometers (30, 760 miles) and is the eighth planet from the sun. If Neptune were hollow, it could contain nearly 60 Earths. Neptune orbits the Sun every 165 years. It has eight moons, six of which were found by Voyager 2. A day on Neptune is 16 hours and 6. 7 minutes. Neptune was discovered on September 23, 1846 by Johann Gottfried Galle, of the Berlin Observatory. Neptune ...
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External Objects Material Objects
784 wordsDescartes is famed by is familiar notion, I think therefore I am (Cogito, ergo sum. ). It is a conclusion he has reached in his second meditation after much deliberation on the existence of anything certain. After he discovers his ability to doubt and to understand, he is able to substantiate his necessary existence as a consequence. What we doubt or understand may not ultimately correspond, but we can never be uncertain that we are in the process of thought. This idea is a major component in De...
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Natural Born Killers Effects Of Television Violence
911 wordsA Threat to Our Society Violence is everywhere in our society today. It is in the sports we watch, the schools we attend, and even in many of our personal and domestic relationships. The question then becomes: what is causing all of this violence? Certainly, there are a number of factors and the blame cannot be pinned on one source. One factor which must be examined, however, is the media and its influence on young people. Several incidents have occurred which prove, at the very least, that medi...
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Anna Maria Napoleon Bonaparte
1,765 wordsThe portrait. A single person immortalized forever on canvas. At first glance, you only see the subject. With a more analytical eye, though, you not only see the image but you begin to hear the voice of the painter and of his time. This is what I hope to do, to feel and understand the mind of the painter Ingres when he painted Louis-Francois Bertin and Reynolds when he painted General John Burgoyne. In the portrait of Bertin, Ingres has captured on canvas a man who has never been pampered in his...
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B And C Second Largest
384 wordsSaturn is the second largest planet and sixth from the sun. Saturn is most known for its rings, first seen in 1610 by Italian scientist Galileo and identified as rings by Dutch astronomer Christian Huygens in 1655. The rings consist greater than 100, 000 single ringlets. It is the most oblate planet because of the rapid rotation of the planet, which flattens Saturn at the poles by about 10 %. Its composition is mostly composed of hydrogen and helium. It is mostly liquid, with a small rocky core ...
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Igor Stravinsky And Coco Chanel Rite Of Spring First
981 wordsRevolutions in the heart Coco and Igor by Chris Greenhalgh 311 pp, Review People punched each other at the premiere of the Rite of Spring. Maybe it was the heat in the packed Th&# 233; tre des Champs &# 201; lys&# 233; es on the warm, Spring evening of May 29 1913. Maybe it was the primal, groin-thrusting immodesty of Nijinskys choreography. But the raw, rhythmic violence of Stravinsky's score soon spilled over into the auditorium, inciting the detractors and defenders of this epoch-making music...
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