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Free research essays on topics related to: chemistry

118 results found, view free essays on page:

  • Edison Invented Light Bulb Inventions
    548 words
    Thomas Alva Edison was born on February 11, 1847 in Milan, Ohio. His father was a shingle maker and his mother was a school teacher. When Edison was seven, he moved to Port Huron, Michigan. Edison attended school there. He tended to ask many questions and this would bother his teachers. The teachers told his mother that he was mentally retarded and could never learn. He would not stay focused and was too active to learn. He only attended three months of formal education and the rest of the time ...
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  • Scientific Improvements Of The Arabic Empire
    1,199 words
    ... cts such as the Triquetum. Also the Greeks, Ptolomy, came close to trigonometry but it was actually Al Battani who adopted the sine and cosine ratios which made the creation of the astronomical tables much easier. (Ronan 224) Even though the 9 th through the mid 10 th centuries were times of revolutionary improvements, the late 10 th through the early 12 th centuries were just as important. During this time improvements were made on previous discoveries of the Arabs as well as of course the ...
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  • Marie Curie Nobel Prizes
    1,161 words
    Why was Marie Curie a significant woman in European Science? Marie Curie was the most successful scientist to come out of Poland. She saw science as a beauty that she wanted to withhold. # Science to her was an unknown fairy tale phenomena that she was determined to discover. Marie Curie wanted to use science to help others, and the world. She accomplished this by working in World War I, and discovering radium, and polonium. Marie Curies discovery of polonium was a great scientific finding. This...
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  • Physical Therapist Athletic Trainer
    1,132 words
    In ten to fifteen years I would like to be working in the physical therapy industry as a sports trainer. I like the idea of being around sports while dealing with medicine and sport injuries. I have participated in athletics since I was very young and have played contact sports. Now I would like to work in the sport therapy field to prevent these injuries from happening. My goal would be to work with high school athletes anywhere up to professional athletes. The person I interviewed was Norm Paq...
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  • Washington D C Wearing Sunglasses
    1,083 words
    On March 20, 1995 a nerve gas believed to be sarin was released in Tokyo. The gas was released in several commuter trains throughout the Tokyo metropolitan area, killing six, and injuring twelve hundred others. This act, described by local authorities as "a case of organized and indiscriminate murder, but one item in a string of crimes committed by the doomsday religious cult Aum Shinri Kyo (Aum Supreme Truth). At about 8: 15 A. M. Tokyo time, packages left on several commuter trains throughout ...
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  • Marie And Pierre Nobel Prize
    921 words
    Marie Curie Marie Curie was born in Warsaw on November 7, 1867. She was actually born to the name Marja Sklodowska. When she was 24, she went to Paris where she changed her name to Marie and started school in Sorbonne. In 1893, she received her degree in physics. When she needed a lab to experiment in, a Professor Kovalski said that there might be space in the School of Physics and Chemistry. He also said that Pierre Curie, a scientist there might be able to help her. She had heard of Pierre and...
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  • Fifth Grade Playing Field
    576 words
    There goes Wile E. Coyote again, initiating the first phase of his plan. The rockets attached to his feet make him reach speeds fast enough to catch the Roadrunner. Oops! He accidentally put them on backwards. To his dismay, when he activates them, he shoots backwards into a cliff as the Roadrunner speeds off in the other direction. Even though he is in extreme pain, he gets up and starts formulating his next plan. He has the amazing ability to never give up, which I feel is a quality I share. W...
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  • Attention Deficit Disorder Deficit Hyperactivity Disorder
    1,286 words
    Attention Deficit Disorder (ADD) is a problem that affects 5 % to 10 % of all children. ADD affect more children than any other childhood problems except asthma. It is estimated to be the largest single cause for first referrals to child guidance clinics throughout the country, making up as many as 40 % of those cases. Many ADD cases are not diagnosed because the problem most often does not show in the doctors office. Current estimates suggest that approximately 50 to 65 % of the children with A...
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  • Carbon Dioxide Directly Proportional
    1,251 words
    ... le then existed he could not, and did not, determine the relationship between degree of hotness (temperature) and volume of a gas quantitatively. (Siebring, Richard, Page 32) Guillaume Amontons (d. 1705) developed the air thermometer, which uses the increase in the volume of a gas with temperature rather than the volume of a liquid. The air thermometer is an excellent demonstration of Charles' law because the atmosphere maintains a fixed downward pressure above a small mercury plug of consta...
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  • Acetic Acid H 3
    842 words
    In 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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  • Acid Rain Sulfur Dioxide
    566 words
    "Acid rain" is a broad term used to describe several ways that acids fall out of the atmosphere. A more precise term is acid deposition, which has two parts: wet and dry. Wet deposition refers to acidic rain, fog, and snow. As this acidic water flows over and through the ground, it affects a variety of plants and animals. The strength of the effects depend on many factors, including how acidic the water is, the chemistry and buffering capacity of the soils involved, and the types of fish, trees,...
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  • Bachelor Degree Chemical Engineer Engineering
    542 words
    The Chemical Engineer Chemical Engineer The chemical engineer is an invaluable link between scientific principles and manufacturing realities. It involves the use of chemical, physical, and engineering principles. The scientist in a laboratory does basic research to develop new compounds and processes. When the scientist discovers a product that may be useful, the chemical engineer takes over. They adapt the product for big scale manufacturing. They do this by designing a plant to produce the it...
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  • Short Story Didn T
    830 words
    One Monday morning my mom called me and said? Your going to be late for school. ? I yelled back? Good I want to be late now leave me alone. ? and I went back to bed. She called me again so I got up because I knew I wouldn? t hear the end of it if I didn? t get up. I rolled out of bed, pulled on my clothes and stumbled down the stairs. The time was 8: 30 and I didn? t have time to eat so I brushed my teeth, and hair, and washed my face. I needed a pop to make it through first period so I stopped ...
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  • Registered Nurse Bachelors Degree
    820 words
    The nursing field extends many opportunities to be a very important part of the health care team. Nursing involves direct patient contact and varied skills and abilities. A nurse has a unique opportunity to ensure that they care for a patients comforts and needs, and can make a difference in every patients life. Various challenging opportunities are available under the broad category of nursing. A wide range of career opportunities is open to registered nurses. Many nurses choose to specialize o...
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  • Flew Over The Cuckoos Nest Deaf And Dumb
    1,285 words
    Abnormal Psychology One Flew Over The Cuckoos Nest This movie demonstrates much of what I despise about my fellow feeble-minded Americans. In this movie, I saw stereotypes galore, and almost every cliche in the book. For example, one voluntary patient is seeking therapy for his marital problems. It seems that he and his wife were having sexual problems. This ultimately leads everyone, patients and viewers alike, to believe that this man must be gay. As if this werent enough, we have to have the ...
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  • Deaf And Dumb Nurse Ratched
    1,281 words
    This movie demonstrates much of what I despise about my fellow feeble-minded Americans. In this movie, I saw stereotypes galore, and almost every cliche in the book. For example, one voluntary patient is seeking therapy for his marital problems. It seems that he and his wife were having " sexual" problems. This ultimately leads everyone, patients and viewers alike, to believe that this man must be gay. As if this werent enough, we have to have the " blind-deaf-and-dumb-guy" ,...
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  • Paleo Ecological Reconstruction Paleo Ecological Evidence Organisms
    1,100 words
    One of the principal objectives of geologists studying sedimentary rocks is the reconstruction of the environment in which the rocks were deposited. Correct reconstruction may result in the discovery of oilfields, deposits of salts, or base metals, and provide insight to our earths past. As evidence to ancient environments the geologist has the structures, textures, and composition of the grains that make up the sediments, and the fossils preserved in them. Organisms are far more sensitive to, a...
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  • Important Aspect Service Quality
    786 words
    WRT Service Quality PHAN DUNN WRT 101 ESSAY# 2 April 20, 1999 WHAT SERVICE QUALITY IS ALL ABOUT? The word Quality has various meanings and is a broad topic for me to discuss. The idea of quality is very complex to describe, as it deals with so many different principles. Fortunately, I found that the most important concept of service quality is that it makes a huge success in the spa and pool industry, which I am familiar, with as I spent a few years in this business. The most important concept i...
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  • High Blood Pressure Sleep Apnea
    1,677 words
    leep Apnea is a disorder that causes the cessation of breathing during sleep. There are three types of Apnea: Obstructive, Central, and Mixed. The most common type of apnea is Obstructive Sleep Apnea (OSA). The individual suffering from OSA may stop breathing hundreds of times during the night for more than a minute at a time. The word Apnea literally means with out breath in Greek. (1) Like all muscles in the body while sleeping, the soft palate and tongue muscles relax, and end up collapsing c...
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  • Acid Rain Sulfur Dioxide
    1,127 words
    Acid rain is precipitation of higher than normal acidity. Manmade increases in the acidity of precipitation are traced mainly to the burning of coal, oil, and gas by heavy industry and electrical utilities. Burning these fuels releases sulfur and nitrogen oxides (Sox and Nox) to the atmosphere where they combine with water vapor to produce sulfuric acid (H 2 SO 4) and nitric acid (HNO 3). The acids in the atmosphere are carried and deposited on the earth s surface in the forms of rain, snow, and...
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