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Chemistry of Pool Water - Introduction The objective of pool inspection is to protect public health and safety by ensuring the pools are maintained and operated in compliance with the regulations. There are many different aspects of the swimming pool that need to be checked to ensure its safety, not only the water quality, but also the areas around the pool including equipments, recirculation system and etc. Routine pool inspections allow the operators and the inspectors to identify potential problems that require repair or adjustments to avoid accidents from occurring....   [tags: Chemistry] 918 words
(2.6 pages)
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Surface Chemistry of Silica - In order to gain strong insight into the surface chemistry of silica we have perform a thorough literature search. Our goal is to identify the pioneer research performed on silica and silica supported catalyst. Particular interest lies in silica-water-cobalt and silica-alcohol-cobalt systems. This study is both on macro and micro level so that a complete theoretical base can be established. From this theoretical knowledge, key areas to look upon will be identified and a design of experiments will be established....   [tags: Chemistry] 1273 words
(3.6 pages)
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Nuclear Chemistry - Types of Radiation: • List the three types of Radiation and describe conditions under which each case occurs. Alpha, Beta, Gamma. Alpha radiation/emission - Alpha particles are the nuclei of a Helium atom 42He. Consisting of two protons and two neutrons, positively charged. The nuclei are ejected from heavy, unstable nuclei so as to remove excess protons and neutrons. However, the formed nuclei may still be radioactive in which even further decay will occur. Alpha emissions occur in nuclei with atomic numbers greater than 83....   [tags: Chemistry]
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1999 words
(5.7 pages)
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Chemistry of Taste and Smell - ... Another example of an odorant is Vanilla. Vanilla’s modern name is very similar to the scientific name which is Vanillin(Chemistry of Smell). When the odorants ( smell molecules) enters the nose it dissolves in mucus and sinks down to the olfactory epithelium which is made of millions of tiny receptor neurons. Cilia, a protruding knob that is in the middle of the neurons,receives the odorant and sends it directly to the part of the brain called the olfactory bulb. In fact cilia is the only part of the brain that is visible outside of the skull(The Science of Taste and Smell)....   [tags: Chemistry Essays]
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559 words
(1.6 pages)
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History of Chemistry: Medicine and Technology - ... Also when someone came up with a new type of virus or some symptom or something that needed medical attention, was complicated for them to try and figure what it was or if it was the weather change. But thankfully technology has been improved to help us live better and in a safe environment. Natural resources may limit technology but it also advances technology. In the many ways that it advances or helps technology are that; it reduces or eliminates the use or generation of hazardous substances....   [tags: cures, environment, lives, chemistry] 841 words
(2.4 pages)
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The Chemistry Nobel Prize 2013 - For what work (research) was the prize awarded. Chemistry is one of category of Nobel Prize given to chemists who have dedicated in chemistry science. For a chemist, Nobel Prize is one of most prestigious award. Nobel Prize for chemistry 2013 has been decided, chemistry prize goes to three theoretical chemists who have developed a multiscale computer model to predict complex chemical reaction. For some people, maybe it the Chemistry Nobel Prize 2013 decision was a surprise. The Prize did not go to chemist who had developed new formula of chemistry but the prize went to a group of chemists who had developed a computer program about chemistry....   [tags: Science, Chemistry, Nobel Prize]
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1633 words
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The Chemistry Nobel Prize 2013 - The Chemistry Nobel Prize 2013 Chemistry is one of category of Nobel Prize given to chemists who have dedicated in chemistry science. For a chemist, Nobel Prize is one of most prestigious award. Nobel Prize for chemistry 2013 has been decided, chemistry prize goes to three theoretical chemists who have developed a multiscale computer model to predict complex chemical reaction. The three chemists are Michael Levitt from Stanford University, Martin Karplus, Strasbourg University, Harvard University, and Cambridge University, and Arieh Warshe from University of Southern California....   [tags: Chemistry Nobel Prize]
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754 words
(2.2 pages)
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History of Chemistry: Chemical Weapons - ... Next is Nerve Agents, which are considered to be organophosphates. Nerve agents work by stopping flow of ACh, which is responsible of muscle contraction. When effected it leaves you with no control of your body, leading you to a slow painful death. Then, there is Blood Agents. Blood Agents are fast acting, cyanide or arsenic type of positions. They work quickly and go into your bloodstream. At short term exposures it can just cause dizziness and nausea. But long term can cause brain damage and muscle paralysis....   [tags: chemistry, technology, victims, types] 798 words
(2.3 pages)
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Chemistry before Technology: Alchemy - ... According to the New York Times article “The Magical Origins of Modern Chemistry” alchemy was a philosophy and practice that sought to understand the nature of matter. Because of the alchemist they were able to make porcelain, pigments, perfumes, gunpowder, and pharmaceuticals. Before technology was brought into chemistry it took longer for scientist to discover certain items and chemical compounds and it took them longer to figure out how to do certain things. Before there were phones and computers scientist and chemists could not share their data with others in hope to gain more knowledge and ideas on how to make chemical reactions work....   [tags: history of chemistry, medical research] 800 words
(2.3 pages)
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The History of Chemistry and Its Influence on Society - ... Other important metals that were discovered and that seemed to be popular were silver, copper, tin and meteoric iron. During the early ages of Metallurgy, the methods of purification of metals were looking to be found. But surely the found more gold and came to be way more amused by that again. They called it the precious metal. The next stage of time was known as the Bronze Age. This is when they discovered that certain metals can be recovered by their ores by heating the rocks in fire. Mostly tin, lead, and copper, this process was called smelting....   [tags: what was it like before chemistry?] 731 words
(2.1 pages)
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Application Essay for the Ph.D Program in Chemistry - ... (more) How did you get interested in your field. Throughout my life I have always been curious about the world around me and I strove to understand it at a deeper level. Driven by my curiosity, I took college accredited science courses in high school, and I enjoyed the hands-on work in my chemistry class and was drawn to how fundamental it is to my everyday life. For much of my undergraduate career I have participated in research, and though the work was challenging, I enjoyed the diversity of the work and furthering my understanding....   [tags: education, chemistry, undergraduate] 825 words
(2.4 pages)
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Coordination Chemistry of 3D Transition Metals - ... 1.2 Coordination chemistry of 3d-transition metals Coordination chemistry involving 3d-transition elements are important because they are used in catalysis, molecular electronics, magnetism, photochemistry and in biological systems. Due to presence of partially filled ‘d’ orbital, comparatively smaller size of metal ions, variable oxidation state and high ionic charges they have tendency to form stable complexes with varieties of organic and inorganic compounds. The complexes formed have various coordination geometries, colours and have unusual magnetic and spectroscopic properties....   [tags: chemistry of metal complexes] 988 words
(2.8 pages)
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History of Chemistry: Improvement in Battery Technology - ... Although Benjamin Franklin did not construct the battery, he was the first person to use the term “battery” to describe a set of capacitors he used for electricity experiments. It was Alessandro Volta who invented the first true battery in 1800. (3) The battery was called the Voltaic Pile and had pairs of copper and zinc disc on top of each other, separated by a layer of cloth or cardboard soaked in brine. The Voltaic Pile produced a continuous and stable current and did not lose much charge over time or when not being used....   [tags: devices, electrical, chemistry, battery] 893 words
(2.6 pages)
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Organic Chemistry - Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed. Although organic reactions have been conducted by man since the discovery of fire, the science of Organic chemistry did not develop until the turn of the eighteenth century, mainly in France at first, then in Germany, later on in England....   [tags: Chemistry] 1119 words
(3.2 pages)
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Heterocyclic Chemistry: The Knorr Synthesis of Pyrroles - The Knorr synthesis of the pyrrole, 2,4-diethoxycarbonyl-3,5-dimethylpyrrole, was achieved using an α-amino ketone, ethyl acetoaminoacetate and reacting it with its predecesso r, ethyl acetoacetate in a double condensation reaction . The product was analysed by 1H NMR, 13C NMR, mass spectrometry and IR spectroscopy giving positive results . Introduction Pyrrole has been a molecule of great interest due to its heterocyclic aromatic properties. The lone pair on the nitrogen is delocalised within the ring, causing the heterocycle to be electron-rich ....   [tags: Chemistry]
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2349 words
(6.7 pages)
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Chemistry of LSD and Route of Access - Chemistry of LSD and Route of Access Classification Pharmacologically, the commonly abused hallucinogenic substances may be divided into two major groups. The indolealkylamines, including d-lysergic acid diethylamide (LSD), psilocybin, and dimethyltryptamine (DMT) bear a structural resemblance to the neurotransmitter 5-hydroxytryptamine (serotonin). The phenylethylamines, including mescaline and the phenylisopropylamines such as 2, 5-dimethoxy-4-methylamphetamine (DOM, "STP"), are structurally related to dopamine, norepinephrine, and the amphetamines (Gelenberg, Bassuk, Schoonover 1991)....   [tags: Chemistry Chemical Science Papers]
:: 5 Works Cited
1943 words
(5.6 pages)
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Chemistry and Synaptic Transmitters - Chemistry and Synaptic Transmitters The most common psychoactive substances can be divided into depressants (i.e., alcohol, sedatives, hypnotics), stimulants (i.e., cocaine, amphetamines, ecstasy), opioids (i.e., morphine and heroine), and hallucinogens (i.e., PCP, LSD, cannabis). The brain has different effects to different psychoactive substances. They bind to different receptor types, and can increase or decrease the activity of neurons through several different mechanisms. Consequently, these psychoactive substances have different behavioral effects, different rates of development of tolerance, different withdrawal symptoms, and different short-term and long-term effec...   [tags: Chemistry Science Scientific Essays]
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1653 words
(4.7 pages)
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Chemistry Coursework – Fuels - Chemistry coursework – Fuels Planning ======== Aim --- In this investigation I will have to find out which of the alcohol fuels: methanol, ethanol, propanol and butanol, is the best. The ‘best’ one will be the one which creates the most energy whilst burning. Introduction and prediction --------------------------- A fuel is a substance burned for heat or power. The best type of fuel is one that: can be transported safely without the worry of it catching on fire, gives out a lot of heat for a certain mass, does not cost very much, lights quickly, burns slowly, is safe to use and does not give off any form of polluting gases....   [tags: GCSE Chemistry Coursework Investigation] 948 words
(2.7 pages)
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The History of Chemistry Up to the XIX Century - ... Early civilizations, such as the Egyptians and Babylonians amassed practical knowledge concerning the arts of metallurgy, pottery and dyes, but didn't develop a systematic theory.A basic chemical hypothesis first emerged in Classical Greece with the theory of four elements as propounded definitively by Aristotle stating that that fire, air, earth and water were the fundamental elements from which everything is formed as a combination. Greek atomism dates back to 440 BC, arising in works by philosophers such as Democritis and Epicurus....   [tags: chymistry, a scientific art] 915 words
(2.6 pages)
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History of Chemistry: The Influence of John Dalton - ... Although this idea has been around for centuries, ideas against the atomic theory have been around just as long. The philosopher Aristotle, argued against the existence of atoms all together. Roman Catholic theologians during the Middle Ages in Europe also backed up the argument of Aristotle. Overall, the atomic theory has been an on going argument for many centuries and is still being tested today. Then, in 1808 John Dalton came up with the Modern Atomic Theory. During this time there were laws called the law of conservation of mass, the law of definite proportions, and the law of multiple proportions....   [tags: chemisty, law, theory, atoms] 855 words
(2.4 pages)
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A General Review of the Chemistry and Utility of Scopolamine - The study of scopolamine involves aspects that are manifold and complex. In this investigation, the pathways for biological and laboratory syntheses were elucidated, in additional to the physical and chemical properties and characteristics of scopolamine. 13C-NMR and H-NMR were generated from collected data, and the isolation and uses of scopolamine were discussed. Introduction Scopolamine's uses have roots in ancient times and have pervaded into the present. This heterocyclic tropane alkaloid is naturally found in Solanaceas plants and can be prepared in the laboratory from various precursors....   [tags: Chemistry]
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2380 words
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The History of Chemistry: Chemistry is True Science - ... So what was the world like before Chemistry you might ask yourself. Life before Chemistry was much more difficult. Ancient Civilizations did not know which chemicals to pair with what, leaving them with lives that were much more difficult than what was needed. After the discovery of Chemicals, and the use of science in everyday lives, the environments became more and more structured. Humans began to use this way of life and channel it into their own, from the mixture of certain chemicals to make pottery, to extracting medicine out of plants....   [tags: society, impact, technology] 614 words
(1.8 pages)
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Chemistry Report: Experiment on Rates of Reaction - Rates of Reaction CaCO3 + 2HCl → CaCl2 + H2O + CO2 In this report I will be suggesting my predictions on what the rates of reaction will be and what the actual rates of reaction are. I will do this by collecting data from experiments and I will show this by putting data into a table. The main aim of my experiment is to find the rate of reaction over time taken and the rate of reaction when the concentration of hydrochloric acid increases or decreases. I will try to make my experiment as accurate as I can....   [tags: chemistry experiment, lab report] 3714 words
(10.6 pages)
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18 Steps to Make a Chemistry Experiment - STEP 1: Test the conductivity of the glasses with a volt meter. Look for the side which has resistance. To start this experiment off, we needed to determine the conductive side of the glass. The conductive side will have the resistance. This will be the most active in this experiment. It will take a huge part to this experiment because it contains the electrons that this experiment requires. STEP 2: Tape down the conductive sides to the table. Place each side with two pieces of tape except the side closest to you place one piece....   [tags: titania, tio2, chemistry, voltage]
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The History of Chemistry - ... What is the point of studying chemistry. Because we use all the time, especially when we are cooking. If you know how to use chemistry to your knowledge, then it can help you make everyday choices. There are many people who work in the field of chemistry. People from doctors to truck drivers. People often wonder what the importance of chemistry is. It is the study of matter, and matter is all around us. Chemistry is also explains things like cooking, cleaning, medicine, and many other things....   [tags: alchemy, pure sciences] 789 words
(2.3 pages)
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The Science Of Chemistry - ... The first scientist to discover the science of chemistry was Democritus. He also created the term atom. It took many centuries to figure out the many details that go with chemistry. Without chemistry we would have no periodic table. Without the periodic table we wouldn't know what the world was made of. To begin,Chemistry is what created other sciences like biology and geology. You can find chemistry in everyday life. For example at school when you're doing an experiment and a chemical reaction occurs that's chemistry....   [tags: democritus, atom, vaccines]
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The History of Chemistry - ... Chemistry is important to everyday life, because everything is made of chemicals. Chemistry is outside with the leaves changing colors in the fall. The supplies used to do household chores are made from chemistry. Chemistry is literally in everything from the food you eat to the air you breathe. It’s in your soap, your emotions, and everything you can see or touch. Antoine Laurent Lavoisier is considered to be the father modern day chemistry. He had a mighty impact on the way the world views chemistry today....   [tags: alchemy, importance] 840 words
(2.4 pages)
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The History of Chemistry - ... He discovered that the volume of a gas decreases with increasing pressure and vice-versa (Boyle’s Law). Antione-Laurent Lavoisier, another leading thinker of the Chemical Revolution, gave society a new understanding of the chemical role of gasses in explaining combustion, respiration, and other processes. These leading scientists and their forerunners made Chemistry a science that their successors would continue to study (Chemical Heritage Foundation). Elements—pure substances that cannot be broken down into simpler forms—and compounds—mixtures of two or more elements—form all types of matter....   [tags: scientific fields of study] 856 words
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The History of Chemistry - ... These are just a few of the stuff we use today in chemistry. So what was society like without all this stuff we have today. Well we could say they weren’t as affective of some of the stuff we have today. For intense they had some of the stuff we have to day but ours is just more advanced now. The more advanced we are the more we will be better off in society with the stuff we have in the future. Natural resources help with chemistry in many ways like materials in chemistry will construct many of the required solutions to some of the most important energy and environmental problems in today's society (Royal Society of Chemistry 2013)....   [tags: pure sciences, alchemy] 774 words
(2.2 pages)
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The History of Chemistry - ... He was also the founder of modern mineralogy, and in 1751, he also discovered the mineral scheelite, tungsten. Joseph Black had isolated carbon dioxide in 1754. He soon called carbon dioxide “fixed air.” In 1758, joseph used a concept called latent heat to show the thermochemistry of phase changes. Henry Cavendish had isolated hydrogen in 1766. He soon called “inflammable air.” In 1773, Carl Wilhelm Scheele discovered oxygen. He came to call this “fire air.” Scheele had not published his achievement soon enough, and Joseph Priestley did instead....   [tags: Lewis electron dot diagrams,] 962 words
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Chemistry lab report - The goal of the project was to characterize an "unknown" organic acid in order to make a proper identification of the acid, while learning proper techniques for scientific measurement and analysis of error. In order to ensure the most accurate data, a purification was performed by the process of recrystallization. To perform the recrystallization the powder was dissolved in a minimal amount of hot ethanol/H2O solvent that allowed the unknown powder to crystallize properly when cooled. This process allowed for the removal of soluble impurities when suction filtered....   [tags: Chemistry] 912 words
(2.6 pages)
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The History of Chemistry - ... Michael Faraday discovered that a definite quality of change must flow in order to give weight in the solution. Avogrodro introduced the hypothesis that equal volumes of gases at the same pressure contain the same number of molecules. Prout thought that all elements have an atomic weight and multiples with the weight of hydrogen. This hypothesis contributes to the periodic table. The periodic table was independently found by J. L Meyer in Germany and D.I Mendeleev in Russia (1869). Adding on to that William Ramsay and Lord Rayliegh found other gases to extend the periodic table....   [tags: alchemy, the periodic table] 1790 words
(5.1 pages)
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The History of Chemistry - ... In 1774-1794, Joseph Priestley discovered a colorless gas he called “dephlogisticated air”, which is actually oxygen, by taking a calx of mercury and burning it. Antoine Lavoisier disapproved the Phlogiston Theory. He named the “dephlogisticated air” oxygen when he realized oxygen combines with substances as the burn. Lavoisier is now called the “Father of Modern Chemistry” because of his attributions. In 1803, John Dalton’s Atomic Theory states that all matter is composed of atoms, which he discovered are small and indivisible....   [tags: alchemy, turning cheap metals into gold] 941 words
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The History of Chemistry - ... He realized the tube was giving off a ray that passed through the heavy paper. He then discovered you could also cast shadows of objects on pieces of film. Within a year, X-rays were being used in diagnosis and therapy and were an established part of medicine. Doctors use artificial radiation to diagnose disease or injury. It does not contain any natural resources. ("Artificial Radiation") The X-ray photons carry enough energy to ionize atoms and disrupt molecular bonds. This makes it a type of ionizing radiation and making it harmful to living tissue....   [tags: science research paper, x ray machine] 848 words
(2.4 pages)
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Careers in Chemistry - “Careers in Chemistry” Though many people fail to realize it, chemistry is a subject essential to everyday life, due to the fact that it is the branch of science that deals with the identification of the substances of which matter is composed. But what we must understand is that everything in the universe is composed of matter, hence chemistry is necessary in learning more about the world and universe that we live in. There are many careers and fields affiliated with chemistry that people pursue to learn more about the composition of the universe, but for now, let us examine the logistics of three of these careers....   [tags: geochemists, chemical engineering]
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1363 words
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Chemistry Experiment on the Reaction of Different Metals When Exposed to Acid - Before the experiment, I wrote down a prediction. My hypothesis towards the experiment was that magnesium would have a bigger reaction with the acids. The reactivity of an element depends on its ability to gain or loose electrons which are used for bonding. The more reactive an element, the more easily it will combine with others. From this information, I know that magnesium has a stronger ability to gain or loose electrons which makes the metal more reactive. I gathered together four different metals and acid compounds which all reacted with one of the elements in the past, for example, Iron Sulphate (FeSO4) contain iron....   [tags: chemistry lab] 856 words
(2.4 pages)
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History of Chemistry: What Brought About Modern Chemistry - ... This was the end of alchemy in that time period as they knew it, with the disproving of Aristotle’s four element statement, and the publication of The Skeptical Chemist destroyed the thought of alchemy as a form of chemistry, and then Modern Chemistry began. After the publication of the Skeptical Chemist, Johann J. Beecher, thought phlogiston was a substance that that when something was burned, it was added from the air to the flame of the object that was burning. He also thought in certain substances, that a product was produced, and this was called the Phlogiston Theory....   [tags: science, published, change, subject] 1429 words
(4.1 pages)
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The Chemistry of Love in Modern America - The Wonderful World of Disney is magical land full of fun, happiness, friendships, and love. Children from a young age are captivated by the colorful art, whacky characters, and funny moments found in the classic cartoon films. The children may walk away from the movie feeling happy, but their minds have been contaminated with ideas far beyond their understanding; ideas specially pertaining to love. From such a young age, children are used the idea of ideal love, love at first site, and eternal love from Cinderella, Pocahontas, Beauty and the Beast, and many others....   [tags: Relationships] 1475 words
(4.2 pages)
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The History of Chemistry and Technology - ... Despite the alchemists' efforts, transmutation of cheap metals to gold never happened within this time period. Over the years with chemistry evolving into everyday use in life, in 1845 Heinrich Geissler created the first vacuum tube. After that point chemistry picked up and discovered for the do a lot off things using the ways and life of chemistry as in The Protons, X-rays, The Electron, Types of Radiation, Protons and Nucleus, and much much more What was society like before the discovery of your technology....   [tags: advances in science] 881 words
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History of Chemistry through the Ages - ... This means, we would not have satellite TV or internet. Without internet I would not be typing this chemistry paper right now. Without chemistry we wouldn’t have cell phones. Without cell phones, teens today would simply not know what to do with themselves. It is one thing after another. The world needs chemistry. Natural Resources involved in chemistry would be oxygen as one of the main ones. Oxygen is a very important element I guess you could say. Without oxygen we would not be here right now....   [tags: resources, society, teachnology] 792 words
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History of the Science of Chemistry - ... I believe life/society, has got better and increased our knowledge about the things we didn’t know at first. Society has really take advantage of the quality and put forth a great effort to answer questions for life before chemistry. One important scientist who’s put forth an effort to answer any questions we have about chemistry is the son of Richard Boyle, first earl of Cork and a great Elizabethan adventurer, and his second wife, Katherine Fenton, Robert Boyle was born to considerable affluence and was related, by blood or marriage, to all the great Anglo-Irish families of his day....   [tags: technologies, nature, matter, society] 881 words
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Chemistry and the Structure of DNA - ... The backbone of the nucleic acids consists of the interaction between phosphate groups and the hydroxide groups of nucleic acids. These are held together by covalent bonds called phosphodiester bonds. The helix itself is held together by hydrogen bonds. Although hydrogen bonds are weak individually, there are so many of them within DNA that the strands are held tightly together. Without basic chemistry the structure of DNA would be a mystery. The instructions to make a protein are coded by DNA....   [tags: function, protein, products] 599 words
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Taking a Look at the History of Chemistry - ... THC is one of the cannabinoids in medical marijuana. THC is delta -9-tetranydracannibinal. Patients who need muscle relaxant and anti-inflammatory and even an stimulant commonly have THC in it. Medical marijuana strains high in THC because it acts as anitidepressant stimulates appetite, and lowers blood pressure. CBD is another cannabinoid found in medical marijuana. CBD is cannobidiol. Patients who take this medical marijuana that is high in CBD lessen the psychological effects of medical marijuana....   [tags: branches of science, the study of matter] 933 words
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College Application Essay on Chemistry - ... I have decided to choose this type of science degree because I love the mathematical challenges working out physical chemistry calculations such as equilibrium and lattice enthalpies. Furthermore, I know that chemists have to be familiar with the valence bond theory to understand how atoms bond together to form molecules, this is a topic that even PHD students need to know. I have always liked chemistry because I like working with numbers, deducing information and applying it to unknown problems....   [tags: Math, Challenge] 556 words
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The Impact of Chemistry on Medicine - ... He was born in 1822 and lived until 1895. He was able to create these vaccines through a process called pasteurization. Another thing that chemistry has done for medicine is discovering things such as DNA and RNA. Without the discovery of these things we would not have known about things such as DNA mutations or genetics in general. The chemist who discovered the DNA structure is a woman by the name of Rosalind Franklin. As you can see chemistry has given modern day medicine everything it is based on....   [tags: a chemist discovered DNA, Rosalind Franklin] 571 words
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The Key Minds That Made Chemistry - ... This was the man who invented the technique of chemical formula notation. Which played a huge part in our classroom lately. Jons was very successful electrochemist, who was rivaled by Humphry Davy, yet it doesn’t seem like much of a rivalry since Jons was much more systematic about accomplishing his experiments. Another huge discovery he mad was the law of constant proportions, which states “the elements in inorganic substances are bound together in definite proportions by weight.” What makes this discovery interesting is that he came about this while doing experiments in an effort to put together a textbook for his students....   [tags: law, formula, periodic, table, prizes] 822 words
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Contributions of Famous Scientists to Chemistry - ... He first studied medicine but was later sent to athens and became a philosophiest under a man named plato. Alchemy is what became the new intrest of chemist during the era known as the dark ages. In short alchemy is transmuting the base of metals into the noble ones. This idea of transmuting is said to have arose from the the Alexandrian Greeks in the early centuries of the Christian era; thence it passed to the arabs, by whom it was transmitted to western Europe. No one truly knows where alchemy really originated from....   [tags: John Dalton, Albert Einstein] 867 words
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The Chemistry of the Human Digestive System - Over the course of time there have been many pondering questions and theories about everyday life. Using Chemistry, the study of matter, those questions have been able to be answered. From the mixture of gases in the air we breathe to the organic substance of plastic, chemistry can be seen everywhere. However, most people misunderstand the power of chemistry in our own bodies. How is it that a simple loaf of bread, once consumed, can turn into fuel for the human body. Using the digestive system and its many organs through the process of digestion and metabolism is how our bodies receive the energy it needs to continue....   [tags: Biology, Esophagus, Stomach] 1350 words
(3.9 pages)
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Alchemy: The Key to Modern Chemistry - ... Here on earth we have a very abundant supply as well, the earth is made up of about 34.6% of the stuff (this does not include the atmosphere, just the mass of the earth itself). (Onlinemetals) Moving on to another culture that has changed the world in great ways through its study and application of alchemy: The Chinese. The people in China have produced some of the greatest modern marvels that we know today. The one that was in greatest association with alchemy was their invention of gunpowder....   [tags: accuate, science, reactions] 1997 words
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How Water Is Related To Chemistry - ... Thus, the make up of a lot of molecules to a great extent affect their solubility. Water has a tendency to break down into H+ and OH- ions. During this disassociation process, the oxygen hold on to the electrons as a consequence just one of the hydrogen turns in to a negatively charged ion called hydroxide ion. Water that is pure consists of the identical number H+ being OH- ions. Solutions that are acidic solutions have greater number of H+ ions as compared to the OH- ions, while the basic solutions have greater number of OH- ions as compared to the H+ ions....   [tags: Molecule, Solvent, Hydrogen]
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History of Chemistry and Technology - ... Sulfuric acid is a strong acid. More negative metals than hydrogen dissolve in it, forming a salt and water. A dilute solution will not dissolve copper. A more concentrated solution, however, will dissolve copper, oxidizing it at the same time. The next thing is phosphorus is the most important element found in the fifth main group of the period table. It has five electrons in its outermost shell. It is also found in the bodies of both animal and human hosts, in the compound calcium phosphate....   [tags: sulphur, phosphorus, nitrogen] 853 words
(2.4 pages)
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Chemistry and Effects of Acid Rain - ... Acid rains cause great harm to the environment. It is very harmful to the animals and other living organisms in water. Most lakes and streams have a pH level between 6-8. When acid rains hit the water, pH level goes down and water becomes acidic. The soil of these lakes and streams have an ability to neutralize the acidity of the soil. This is called buffering capacity. However, if the pH level is too low, this neutralization is not strong enough to keep the balanced levels. When water becomes too acidic, it dissolves harmful substances from soil such as aluminum and releases it to water....   [tags: industrial revolution, greenhouse gases] 609 words
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The Father of Modern-Day Chemistry - Antoine Laurent Lavoisier is considered to be the father of modern-day chemistry (Balchin 36). He had an unbelievable impact on the way the world views chemistry today. From identifying elements to discovering the importance of the role of combustion, he played an essential part in the world’s scientific ideas and inventions. He was so influential that he is said to have an equal if not greater impact in chemistry as Newton did in physics (Tiner 90). He used the initial ideas of Joseph Priestley, Henry Cavendish, and Karl Scheele, and worked to prove them and make them more official (Tiner 90)....   [tags: Biography, Lavoisier] 1681 words
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Chemistry Involved in Electric Vehicles - ... Khalil Amine and Zonghai Chen of the Argonne National Laboratory discovered a molecule base of boron and fluorine added to each cell controls the charging of the battery cells. The molecule is said to be less costly and more reliable than the electric control. (MANDEL, 2009) In the 1800s the lead acid based battery was invented and used in electrical cars. The technologies of the lead-acid battery are a wet cell battery and often have a mild solution of sulfuric acid. The lead electrodes are combined with acid to produce electricity....   [tags: alternative automobiles, automotive industry] 646 words
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Hair Chemistry and Hair Growth - ... This shedding of telogen hairs happens easily and painlessly; these are the hairs that fall out when a person is shampooing or brushing his or her hair. As each hair is released, the process starts all over again. An important fact to consider when thinking about these three stages is that they are independent in each hair follicle. For example, while one hair follicle is in the catagen phase, another hair may be released because the follicle is in the telogen phase. Generally in humans, about 85% of hair is in the anagen (growing) phase, about 12% of hair is in the telogen (shedding) phase, and about 3% of hair is in the catagen (resting) phase....   [tags: phases, pH, type of shampoo that is best] 1063 words
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Chemistry and Technology in Biodiesel - ... The diesel engine was originally intended to run on bio-fuel such as vegetable oil, rather than the petroleum-based diesel fuels mainly used today. Therefore society did not know what it was like to run petroleum-based diesel fuel before biodiesel was invented. Biodiesel gives a cleaner diesel fuel to run in vehicles. It does not give off the bad pollutions like a petroleum-based diesel fuel when burned. Therefore it is affecting society in a positive way, by not polluting the air. The resources to make biodiesel are organic, it is a renewable resource so, practically the resources will never run out to make the fuel so resources do not affect the fuel from being made....   [tags: cleaner fuels for internal combustion engines] 523 words
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Modern Chemistry and Diseases - ... We are also altering our food to contain more chemicals to resist spoilage,which is not as healthy as once thought. Many chemicals are added to food increase consumption have caused controversy over why so many people are now overweight in first world countries. Early chemist include Democritus who found Leucippus the "the founder of atomism" was his greatest influence. Democritus considered the "the father of modern science" declared that matter is composed of indivisible and theories. Probably the most influential chemist is Antione Lavoisier who established the Law of Conservation of Mass....   [tags: history, Marie Curie, organisms] 579 words
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Click Chemistry Reaction Types - ... Three common controlled free radical polymerizations are: atom transfer readical polymerization (ATRP), nitroxide-mediated polymerization (NMP), and reversible-addition fragmentation chain transfer (RAFT) polymerization.3 Click chemistry featuring the cycloaddtion of azide and terminal alkynes catalyzed by copper (I) were made popular by Sharpless.3 These reactions are very efficient and practical . The product of 1,2,3 triazole is very stable chemically. 3 The capabilities of click chemistry and controlled radical polymerizations coupled is very attractive....   [tags: nucleophilic opening of rings, cycloaddition] 951 words
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Naming Alcohols in Chemistry - ... The positions of the substituent alkyl (or other) groups are denoted by using the lowest possible numbers for the associated carbon atoms in the main chain (docbrown).” If there is more than one type of substituent e.g. using the prefixes: methy and ethyl, they are written out in alphabetical order (di, tri are ignored while using this rule). Alcohols are classified according to the atoms/groups attached to the carbon of the hydroxy group. “Primary alcohols (prim) have the structure R-CH2-OH, R = H, alkyl, aryl etc....   [tags: hydroxyl functional group] 1670 words
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For the Love of Chemistry - My Love of Chemistry I am applying to the university to study chemistry because this is the subject that I enjoy most. As with science in general, I find it interesting, often fascinating, and I feel that I could gain much from studying it at university. Last year I spent a fortnight on work experience, and enjoyed both of my two placements. At Birmingham University School of Chemistry, I was able to use some techniques that were new to me at the time - such as GCMS, HPLC, and I.R. spectroscopy....   [tags: College Admissions Essays] 543 words
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Important Discoveries in Chemistry - Atomic Theory An important discovery in Chemistry is the Atomic Theory, John Dalton linked invisible atoms. Dalton’s atomic theory was based on the belief that atoms could be dignified by the differences in their masses. He first stated his theory in 1803 at the Royal Institution, the theory had six basic ideas : all matter is composed of atoms, atoms cannot be made or destroyed, all atoms of the same element are identical, and different elements have different types of atoms. Atomic Theory didn’t start with though John Dalton in fact it started with Democritus dating all the way back to about 460 B.C.....   [tags: atomic theory, radiation, Dalton, tracers, atoms]
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Chemistry Lab: Molecular Formulas - ... My third substance that I retrieved is Ethyl Methyl Ether which has a density of 0.7251 g/mL.(PubChem) Since the density is off 0.0599 g/mL I could eliminate it from density portion of the experiment. My fourth possible substance is 2-Hydroxypropan-2-Yl Radical with a density of 0.791 g/mL (GuideChem) just like 2-Propanol and also has a synonym of Isopropyl Alcohol (Usp) therefore; I will not eliminate it from density and keep It for further evaluation. My fifth substance is Propanol with a density of 0.804 g/mL (ChemBlink) which is 0.0208 g/mL more than my experimental value, since the difference is small; I will not eliminate it in the density and will keep it for further evaluation....   [tags: ChemBlink, ChemSpider and PubChem] 1406 words
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The History of Chemistry - The History of Chemistry Chemistry is the science of the composition and structure of materials and of the changes that materials undergo. It is also used in improving standards of living, making it possible for such substances as rubber, nylon, and plastics to be made from completely different materials. New materials and new properties of old materials are always being discovered. Some earlier products discovered from chemical reactions are ceramics, glass, and metals. Dyes and medicines were other early products obtained from natural substances....   [tags: Papers] 1237 words
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The Chemistry of Knowledge - The Chemistry of Knowledge Hippeas thought he had all the answers. “I have never found any man who was my superior in anything,” he boasted. Then he meets Socrates. Though he had made thousands of public speeches about virtue, a dialogue with the wisest of Athenians leads Hippeas to confess that he “cannot even say what [virtue] is” (Hippeas 70). Lesser Hippeas discredits Hippeas but offers little more than a negative definition of knowledge. Meno, Phaedo, and the Republic provide a more comprehensive discussion of the definition, the good and the teaching of knowledge....   [tags: Philosophy Knowledge Knowing Plato Essays]
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The Chemistry of Drugs - The Chemistry of Drugs Delta 9 Tetrahydrocannabinol is the primary psychoactive constituent of Cannibis sativa, and is bound to two cannabinoid receptors: CB1 receptors, located primarily in the brain, and CB2 receptors, located primarily in the periphery (Wiley & Martin 2002). A cannabinoid is defined as a substance that has pharmacological properties that resemble those of delta 9 THC i.e. " a drug that binds to CB1 and /or CB2 receptors in vitro and produces a profile of in vivo effects in the tetrad model" (Wiley 2002)....   [tags: Addictions Marijuana Health Science Essays]
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What´s Supramolecular Chemistry - ... 1.3 Molecular Recognition: “Molecular recognition is selective binding with a purpose” Molecular recognition is a very specific interaction between the molecules, which is believed to happen, only between the molecules that are complementary with each other. The factors that contribute to the complementarity between molecules are, Shape of the two molecular surfaces, Hydrogen bonding between molecules, Ion-ion and Ion-dipole interactions and dispersion forces. 1.4 Anion Recognition Anions carry a net negative charge and are Ubiquitous in nature as binding motifs....   [tags: cells, viruses, atoms] 2007 words
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Statment of Purpose for a Masters in Organic Chemistry - ... I hope to find opportunities that will enhance my abilities and help to tap my full potential. I am aspiring after discover my own mind at University of Regina and applying to the pursuit in contemporary research challenges throughout my career. Furthermore, one of the noticeable challenges of humanity to satisfy our ever-growing demand for secure, clean energy. As the earth’s population is projected to reach nearly 10 billion by 2050, global energy consumption is expected to increase commensurately, with at minimum two-fold increase by 2050.To support this demand, petroleum has become one of the most important and most used fossil fuels....   [tags: graduate, environment, research] 1259 words
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The World Before and After the Discovery of Chemistry - ... Mendeleev is definitely the main factor in that statement. Many inventions are riding on the discovery of chemistry and the major leading factors are the inventions of electricity, the light bulb, modern day medicines, and etc. But also in a way they definitely did help advance the discovery. “Schectman, of the Technion-Israel Institute of Technology, glimpsed his first example of quasicrystals' "forbidden symmetry" in April 1982, when he was studying a metallic crystal made of aluminum and manganese under a microscope....   [tags: history, impact, lives, everyday] 950 words
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The History of Chemistry and Its Influene on Technology - ... also people can travel in the world with automobiles and planes. One thing that had an impact to that was the law of conservation of mass that was discovered by Antoine Lavoisier. he found that the law of conservation of mass states that for any systems closed to all transfers of matter and energy. also there is a law that implies that mass can neither be created nor destroyed. the time in technology was very different before it was discovered. and it will change as time go on in life. The second thing is that natural resources has advanced technology....   [tags: how life would be without it] 986 words
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Protein Crystallography in the Pharmaceutical Chemistry Field - ... It has only been in the past several years however, that reference to pharmaceutical chemistry has begun to flourish as the discovery that co-crystals actually alter their physicochemical properties without out any effect on bioactivity via structural compromise. Although discovered over 100 years ago, co-crystal chemistry is a relatively newly researched and developed field in the broader spectrum of pharmaceutical chemistry. The use X-ray crystallography is a necessary tool when dealing with co-crystals, as it is essential to successfully isolate and identify these products instead of a concurrent product composed of perhaps a mixed ionic or salt complex....   [tags: crystallization, advancements, drug-design] 938 words
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What´s Food Chemistry? - ... This technique identifies unknowns but is fairly long in its reading along with mediocre accuracy, while showing many impurities; moreover, this technique is quite expensive in affording the actual NMR Spectroscopy equipment and requiring 2-50mg of solid sample to analyze, although recoverable.15 Near-Infrared Spectroscopy focuses on the near-infrared region of the electromagnetic spectrum, from about 800-2500nm, which analyzes molecular implication and vibrations.16 Although these transitions are prohibited by the quantum mechanics selection rules, the molar absorptivity in the near-IR region is typically small.17 This technique penetrates much farther into a sample than other types o...   [tags: spectroscopy, unwanted molecules] 1917 words
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Chemistry: Percent Composition Lab Introduction - Percent Composition Lab Introduction The percentage of something is very important in everyday life. For example, a farmer would want to know the percentage of nutrients in a fertilizer they are using. In spring, the farmer may want to use a fertilizer that has a high percentage of nitrogen, because it "greens” plants. In the fall, the farmer may want to use a fertilizer that has a higher percentage of potassium, because it strengthens the root systems of plants. A way to find the percentage of nutrients is by using percent composition....   [tags: fertilizer, potassium, molar mass]
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What's Organic Chemistry - ... Photo-initiators include compounds that break down into free radicals when exposed to ultra violet radiation. There are two ways for the compounds (benzoin) to break down during photo polymerization. The first way is for the chemical compounds to undergo an uni-molecular bond cleavage while experiencing irradiation to yield free radicals. The second method for the benzoin to break down is to experience a bi-molecular reaction. In that reaction, the excited state of the photo-initiator (benzoin) interacts with a second molecule to generate the free radials....   [tags: carbon compounds, benzoin]
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Biology Cannot Be Reduced to Chemistry and Physics - Since the introduction of reductionism, science has greatly changed. Reductionism has captured the attention of many scientists, as well as philosophers of science for the reason that it seeks to accomplish such a large goal. However, we are posed with the question of whether or not reductionism is capable of sufficing enough information for all scientific inquiry. I will argue that biology is not capable of effectively being reduced to physics and or chemistry mainly because it cannot provide the sufficient quantities of information needed, mainly due to issues caused by incommensurability due to varying scientific meanings (which will be discussed with reference to Kuhn and Feyerabend) as...   [tags: scientific terminology, reductionism]
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Green Chemistry: Concept of Atom Economy - ... Before the discovery of atom economy, there were no previous methods that were being used in order to limit the amount of waste product from a chemical reaction. This means that any chemical reactions that were being synthesized prior to this discovery with any excess reactants or products were being put to waste, thereby further increasing harm to the environment. Atom economy on the other hand is a process that not states which atoms are wasted in a chemical reaction, but also how well a chemical reaction puts to use the reactants that were produced....   [tags: materials, natural resources, pollution]
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Dmitri Mendeleev: The Father of Modern Chemistry - ... (1) After a few years in college in 1855 he got tuberculosis casing him to move to Crimean peninsula where he taught at the Simferopol Gymnasium After Mendeleev came back he became a professor at St. Petersburg. He was very popular with his students. He made St. Petersburg the chemistry hub of the world and made his students the best chemist is Russia. He did not like the chemistry textbook his students were using so he wrote his own textbook. “On the principles of chemistry," this was against the rules of the college....   [tags: Russian chemist, science, biography]
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Bipolar Brain Chemistry - ... In general there seemed to be a negative correlation between quantity of monoamine cells and scores on tests of executive function and verbal learning. The more monoamine cells present, the lower the score. This implies that the excess of monoamine cells may directly impact cognitive and social functioning (Zubieta, 2000). Furthermore, multiple research studies have shown that the hippocampus is around 10 percent smaller in individuals suffering from bipolar than in the normal human. A shrunken hippocampus results in heightened susceptibility to stressful situations, which makes sense when viewing the behaviors....   [tags: manic depression, mental disorders]
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Love the Right Chemistry by Anastasia Toufexis - ... A simple action such as a deep look into someone's eyes can start the simulation in the body that an increased production of hand sweat will start. The tingly feeling inside your body is a result of a scientific delineation which makes the concept of love more concretely and more factually mainly for researchers and the wider world.The main idea the author tries to bring across is that love is very much controlled by our body and brain. Although that biochemical events must occur to charity functions to be able to exhibit, we are the first one who starts with our own idea of who it is perfect for ourselves....   [tags: biochemical events, romance] 540 words
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Chemistry Advances in Computers with the Work of Transistors - ... No cell phones. Can you even imagine. Nope. When we had created something like a transistor but definetly did not have the power of a transistor. A vacum tube. It used the Nike system. It was big and heavy so that it could hold all of the vacum tubes. For the precision to get the pure Nike accuracy you had to use analog adjustments. Todays transistors requires 1/15 the man power, is 1/15 the weight. And is more effective, easier to keep working and accurate. How did natural resources limit or advance your technology....   [tags: technology, circuts, resources, society] 575 words
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The Chemistry behind our Television Sets - ... Families looked to each other for entertainment and conversations were a lot more common without a television to distract them. Families also ate around the table in the dining room, rather than huddled around the TV in the living room. Plasma is an ionized gas consisting of positive ions and free electrons that helped to advance the television. The newer models of televisions contain plasma in their screens. Plasma screens are made up of groups of cells called pixels. These pixels are composed of three sub-pixels that consist of three different colors; green, red, and blue....   [tags: science and technology development] 1087 words
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