Chemistry

Chargaff Erwin Erwin Chargaff Erwin Chargaff, born 1905 in Czernowiz, Austria, was a pioneer in biochemistry contributing to the understanding of DNA. He, in 1928, earned his doctoral degree in chemistry at the University of Vienna\'s Spath\'s Institute in 1928. Erwin began his career in biochemistry at Yale University, working under Rudolph J. Anderson from 1928 to 1930. His early work included stories of the complex lipids, the fats or fatty acids that occur in microorganisms. Helping discover
Chemical Compounds Bromine The 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
chemistry The History Behind The Atom Throughout the discovery of the atom, many scientists worked to formulate how the atom works. Which began in the early 1800’s with John Dalton, to our current model of the electron cloud developed by Schrodinger. During this long process of the discovery the atom, took many models and scientists. The entire group of scientists who assisted in the discovery of the atom used each other’s model to improve each other’s theories. Firstly, John Dalton showed that,
clinical chemistry in medicine Of the diagnostic methods available to veterinarians, the clinical chemistry test has developed into a valuable aid for localizing pathologic conditions. This test is actually a collection of specially selected individual tests. With just a small amount of whole blood or serum, many body systems can be analyzed. Some of the more common screenings give information about the function of the kidneys, liver, and pancreas and about muscle and bone disease. There are man
Construction of a Geneticis The Construction of a Geneticist I. A. The construction of a geneticist follows a difficult path of education, preparation, and hard work. B. Genetic Engineering C. Scope 1- accomplishments 2- job description 3- education 4- opportunities 5- future 6- (interview) - Personal insight - Attraction to job II. Background III. Accomplishments IV. Job Description & Opportunities V. Education & salary VI. Interview -Attraction, Personal Insight -Future VII. Conclusion- Why I
Crime Detection In recent times, science has provided substantial aid to crime detection. Because anything in the physical universe has the potential of becoming an item of evidence in an investigation, a wide variety of procedures may be used in analyzing and interpreting evidence in a criminal case. These procedures include handwriting analysis, forensic photography, crime scene documentation, metallurgical investigations, chain of custody, entomology, and blood spatters. The first thing you d
Declining Clarity of a Jewell Exploring Lake Tahoe DECLINING CLARITY OF A JEWEL - EXPLORING LAKE TAHOE BY LESLIE WATSON ELLINGSON APRIL 20, 2000 TABLE OF CONTENTS Lake Tahoe An Introduction Page 2 Lake Tahoe -- History Page 3 Figure One -- Tahoe Region Map Page 3A Lake Clarity -- Introdution to Causes Page 5 Figure Two -- Secci Depth Chart Page 6A Soil Erosion Page 7 Figure Three -- Population Graph Page 7A Air Quality Page 8 Water Inflow and Algae Growth Page 9 Figure Four -- Water Cycle Flow C
Dimitri Mendeleev Dimitri Mendeleev Derived by Dimitri Mendeleev, the periodic table may be one of the most informational tables contained in chemistry. By leaving gaps in the columns and rows, Mendeleev was allowing for the discovery of undiscovered elements of that time. From the properties of the elements surrounding these gaps, Mendeleev was able to predict the properties of these undiscovered elements. Finally, when other scientists discovered the tools of the periodic table, Mendeleev\'s a
Entomology Entomology is the study of insects, involving their biology and control in relation to their environment and to man. Entomology also had an independent scientific discipline which had roots in biology. Some entomologists are involved in reducing harmful species of insects that destroy food, housing, plants, and clothing and cause discomfort and disease to humans, livestock and household pets. Others develop ways to increase growth rate and spread the insects that provide food, pollina
food Athletic Enhancers / In this research paper I will be discussing the ever-popular athletic supplements: Creatine, Androstenedione, and HMB. It has been proven that these supplements when taken in the proper doses will produce phenomenal results in athletic performance. They are taken by athletes of all fields of play in order too give them that extra edge over competition. Creatine monohydrate, which is the number one supplement preferred by athletes, is not a mineral, herb, or steroid. Cre
Forensics Forensics is defined as the aplication of science to interpret clues for crime investigation. The earliest forensic scientists were physicianswho were called upon to give an opinion as to the cause of death in individuals. Now most of the forensic scientists are investigators that pick up clues at the crim scene. Because criminals often are not the brightest people on the planet they often do not plan out a burglary or theft and carelessly leave behind distict clues that allow an invet
frankenstein FRANKENSTEIN In the story “Frankenstein,” written by the author Mary Shelley, Victor Frankenstein decided that wanted to create a being out of people that were already dead. He believed that he could bring people back from the grave. Playing with nature in such a way would make him play the role of God. With Victor Frankenstein feeling that he had no true friends, the only relief he had of expressing his feeling was through letters to Elizabeth. Elizabeth was not Victors’ true siste
Georges Charpac Georges Charpak Georges Charpak, a French citizen, was born on August 1, 1924 in Poland. Charpak\'s family moved from Poland to Paris when he was seven years old. During World War II Charpak served in the resistance and was imprisoned by Vichy authorities in 1943. In 1944 he was deported to the Nazi concentration camp at Dachau, where he remained until the camp was liberated in 1945. Charpak became a French citizen in 1946. He received a Ph.D. in 1955 from the College de France,
Heat of Fusion Jason Jarrell Chemistry II 12-8-99 Heat of Fusion Objective: The objective of this experiment is to find the heat of fusion of water by using a calorimeter. The calorimeter will be used to melt ice in water to find the heat of fusion. Theory: Heat of fusion is known to be the amount of heat that it takes to allow one mole of a substance to turn from solid to liquid. The heat of fusion of water is known to be 80 cal/mol. This experiment will use a calorimeter with distilled water a
History of Chemistry History of Chemistry Introduction: Humans have always been very curios creatures. The have always wondered about what they are and why they are here. Our limited knowledge of the environment has always urged for new things to be discovered. The desire to understand the world better has made people search for rational answers, for principles and laws. For centuries people have tried to unlock the mysterious world that surrounds them. History: Because myths did not explain thi
Huntingtons Disease Huntingtons Disease Huntingtons Disease is caused by the genetically programmed degeneration of brain cells, called neurons. Symptoms of this include clumsiness, forgetfulness, mood swings, lack of coordination, depression, and involuntary twitching. It causes emotional disturbance, uncontrolled movements like the head, trunk and limbs, and loss of intellectual faculties. Also slowly diminishes ability to walk, think, talk, and reason. As the disease progresses, concentration
Interview The Interview For my interview, I interviewed Jennifer Wong, a scientist in the development of analytic chemistry. In her occupation she purifies and analyzes proteins, as well as characterizes the proteins. She works for Panox located at 10301 Stellink Houston, TX 77025. For this company Dr. Wong analyzes proteins in order for her company to market drugs that will later help patients with certain diseases. Right now her company has not yet marketed any products yet, but they are still
Ira Remsen The life of Ira Remsen Ira Remsen was born on February 10, 1846 in New York city. Even though he was born in the United States, he was educated in Germany. He received his M.D. at Columbia University in 1867 and he also earned a Ph.D. at the University of Munich and Göttingen in Germany. After receiving his degrees, Remsen began his investigation in pure chemistry at the University of Tübingen. It was in Germany and in Europe Remsen did most of his research. In 1876 he returned to the
jadoo Arts Business & Econ. College Admissions English History Miscellaneous Science & Tech. Psychology Shakespeare Social Issues Custom Writing Search For Papers By Keyword @ Paper Store Top Essay Sites Top 25 Top 100 Free Newsletter Member of the Tromaville Coalition Chemistry 1. a) Bulk movement is the overall movement of a fluid. The molecules all move in the same direction. Diffusion however is the random movement of molecules which usually results in a fairly even distribution. In other wo
JN Bronsted 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, H3O+ 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 ab
Johannes van der waals Biography Johannes Diderik van der Waals was born on November 23, 1837 in Leyden, located in The Netherlands.His parents were Jacobus van der Waals, a carpenter and Elisabeth van den Burg. Without having much money to start with, van der Waals had to work his way up the latter. After completing his elementary education in Leyden, he became a schoolteacher. Having no prior knowledge of classical languages, and being exempt from taking academic examinations, he continued stu
Life on other planets Life On Other Planets Life exists on other planets. Out of the billions of solar systems, there has to be a chance that a least a couple planets have the ability to support life. Life may have developed on the planets like life developed here, but it may have developed differently also. Are they more intelligent than we are or are they single-celled organisms? Do they have broadcast capabilities, so they can contact us? "It goes back to how life on Earth started. In the ear
Manual for Recrystallization Instruction Manual The purification process: Recrystallization & Filtration Jason Williams 09-13-00 NATS 4310 Table of Contents Preface Chapter 1 Equipment involved and preparation Glassware and accessories Proper sterilization of equipment Safety precautions Chapter 2 Setup procedure before purification Equipment setup Choosing of solvent Chapter 3 Gathering of an unknown compound and the first step: filtration Collection Filtration Repeat Filtration and Cleaning Co
mapping migrations Mapping migrations By Candace Savage Sometime this winter, waterfowl experts from across Canada will gather for their annual "wing bee." Their task will be to sort through a small mountain of duck wings obtained from a randomly selected group of hunters, and assign the wings to piles by species, age and sex. Together with statistics from similar shindigs held in the United States, this information will provide a picture of the year\'s kill and will also offer hints about the u
Marie Curie MARIE CURIE Marie Curie was born youngest of five children in Warsaw, Poland on November 7, 1867. She was well-taught by both her mother, Bronsilawa, a teacher, and her father, Wladyslaw, a professor of mathematics and physics. Marie continued her study of mathematical sciences at the University of Paris in 1891. While working in distinguished laboratory of Gabriel Lippman, she met her husband Pierre Curie. “Their marriage (July 25, 1895) marked the start of a partnership that was so
Melvin Calvin Melvin Calvin was born in St. Paul, Minnesota, April 8, 1911, of Russian emigrant parents. He received the B.S. degree in Chemistry in 1931 at the Michigan College of Mining and Technology, and the Ph.D. degree in Chemistry from the University of Minnesota in 1935. He spent the academic years 1935-1937 at the University of Manchester, England. He began his academic career at the University of California at Berkeley in 1937, as an instructor, and has been a full professor since 1947
Music Therapy Music Therapy Music therapy is the prescribed use of music and musical interventions in order to restore, maintain, and improve emotional, physical, physiological, and spiritual health and well-being (Lindberg). So one finds the selections under the New Age/Relaxation section of the record store about as relaxing as water torture? Just because one\'s taste runs more to Sousa than to soothing doesn\'t mean one can\'t reap all these relaxation benefits music is supposed to have. Musi
NANOTECHNOLOGY What is Nanotechnology? Computers reproduce information at almost no cost. A push is well underway to invent devices that manufacture at almost no cost, by treating atoms discretely, like computers treat bits of information. This would allow automatic construction of consumer goods without traditional labor, like a Xerox machine produces unlimited copies without a human retyping the original information. Electronics is fueled by miniaturization. Working smaller has led to the tool
Never Met A Dull Enzyne “ Never Met A Dull Enzyme” A. Personal Information Arthur Kornberg (1918-), American biochemist and physician, claims he has never met “a dull enzyme.” He has devoted his life to pursuing and purifying these critical protein molecules. His love of science did not spring from a family history rooted in science. He was born on March 3rd, 1918, the son of a sewing machine operator in the sweatshops of the Lower East Side of New York City. His parents, Joseph Aaron Kornberg a
nuclear reactions CHEMICAL REACTIONS Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the first 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 postulate on chemical reaction. He said that a substance called phlogiston escaped into the air from all substances during comb
Oceanography as viewed from space Oceanography as Viewed from Space Introduction At first thought, studying the oceans from space seems to be a bizarre idea. Space observation helps oceanographers do research with manned and unmanned space systems. The space systems can be satellites and/or space shuttles that observe various features of the ocean such as sea-surface winds, sea-surface temperatures, waves, ocean currents, frontal regions, and sea color. Technological advances have greatly improv
Open Book Paper Chemistry Open Book Paper Atomic spectroscopy is a chemical analysis technique and it is used to identify what elements are in a compound. It uses the idea of a photon being absorbed or emitted whenever an electron changes from one energy level to another. The diagram below shows sodium salt being sprinkled onto a flame and yellow light being emitted. Emission spectra are produced by thin gases in which the atoms do not experience many collisions (because of the low density). The
Oppenheimer and The ATomic Bomb Julius Robert Oppenheimer and the Atomic Bomb J. Robert Oppenheimer was a brilliant physicist and known as the ”Father of the Atomic Bomb”. A charismatic leader of rare good qualities and commonplace flaws, Oppenheimer brought an uncommon sensibility to research, teaching, and government science. After help creating the atomic bomb with the Manhattan Project he was banned from the U.S. Government during the McCarthy Trials. He opposed the idea of stockpiling nucle
oxygen Oxygen is one of the 92 known elements. An element is a substance that cannot be decomposed into a simpler substance by any simple means. Each of the 92 naturally occurring elements are therefore one of the fundamental materials from which everything in the Universe is made. The History of Oxygen On August 1,1774, Joseph Priestley examined the effect of intense heat on mercuric oxide. He noted that an air or gas was readily expelled from the specimen. To his surprise a candle burned in th
Pasteur PASTEUR, Louis (1822-95). The French chemist Louis Pasteur devoted his life to solving practical problems of industry, agriculture, and medicine. His discoveries have saved countless lives and created new wealth for the world. Among his discoveries are the pasteurization process and ways of preventing silkworm diseases, anthrax, chicken cholera, and rabies. *BR* Pasteur sought no profits from his discoveries, and he supported his family on his professor\'s salary or on a modest governmen
PCBs PCBs: Polychlorinated Biphenyls Polychlorinated biphenyls are a family of man-made chemicals that contain two hundred and nine individual compounds with varying toxicity. Many different combinations are possible. In chemical terminology, “phenyl” denotes a ring structure of six carbon atoms attached to something else; “biphenyl” results when two such rings are attached to each other. Polychlorinated biphenyl (PCB) is any molecule having multiple chlorine atoms attached to the carbon atoms o
pharmacist As a pharmacist, your job is to dispense drugs prescribed by physicians and other health practitioners and to provide information to the patients about the medication they are using. Pharmacists advise other physicians and other health practitioners on the drugs prescribed. A Pharmacist may inform the doctor of dosages, interactions, and the side effects of medications. A pharmacist must understand the use, composition, and effects of all drugs. Today pharmacists are going beyond the
placebos Why we need placebos English/ History By Jj wallis A placebo is defined as an inactive substance resembling a medication, given for psychological effect or as a control in evaluating a medicine believed to be active. However the placebo only fits this description under the restraints it has been given by the U.S. Food and Drug Administration, which refers to the placebo as an investigational new drug. In actuality, up until the present much of medicine was built on placebos. "Not very l
POLYETHENEaint is choice Year 11 Chemistry Unit 1 POLYETHENE-ain\'t it choice! word count : 1131 Polyethene also known as polyethylene or polythene, was the first of the polymers to be discovered. Polyethene is a polymer produced by reacting oxygen and ethene, in this reaction the small ethene molecules attach together to form long chain polymer molecules. This process is known as addition polymerisation. Polyethene in our world today has many uses, some of these are: · mouldings-plastic bottles
Properties 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 Georg Ernst Stahl was the first to postulate on chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during comb
pyrotechnics Pyrotechnics is defined as the art of making and using fireworks. Some consider fireworks dangerous, obnoxious bursts of noise; others consider them beautiful, artful displays of light. Either way you look at it, pyrotechnics is an interesting and dangerous hobby. Many colors and designs may be created by the placement of different compounds in distinct areas of the fireworks, either projectile or stationary ones. Some of the many different colors of the visible spectrum that can be
Quantim Theory Quantim Mechanics is abranch of mathematical physics that deals with the emission and absorption of energy by matter and with the motion of material particles. Because it holds that energy and matter exist in tiny, discrete amounts, quantum mechanics is particularly applicable to Elamentry Pprticlesand the interactions between them. According to the older theories of classical physics, energy is treated solely as a continuous phenomenon and matter is assumed to occupy a very speci
resistance Investigating the Rate of Reaction Between Marble Chips And HCL Safety- must always wear safety glasses and we should be very careful not to drop any acid. Fair test- we must make sure that we use the same size, amount and roughly the same mass of chips, this is because we want to keep the chips roughly the same all the way through the experiment so that it will be a fair test and the results we be in relation to each other, otherwise the results will be completely different to what w
Rosalind Elsie Franklin Who is Rosalind Franklin? Born on July 25, 1920 in London, England, Rosalind Elise Franklin was a catalyst to many other scientists in the field of genetics. Using coal and carbon as subjects, Franklin discovered the double helix of DNA, the shape that two linear strands of DNA assume when bonded together. In 1945, Franklin received her Ph. D in physical chemistry from Cambridge University. The next year she went to Paris and worked in the Laboratoire Central des Services
Rutherfords discoveries Ernest Rutherford Ernest Rutherford was born in New Zealand in 1871 as one of 12 children. It was Rutherford who first "split" an atom and who discovered the atomic "nucleus", a name that he invented. For this he is regarded as the greatest experimental physicist of his time. Rutherford was one of the first and most important researchers in nuclear physics. Soon after the discovery of radioactivity in 1986 by the French physicist Antoine Henri Becquerel, Rutherford discov
Sir Humphrey Davy Sir Humphry Davy In Chemistry there are many very important chemists. One is Sir Humphry Davy. Davy was born on December 17, 1778 in Penzance, Cornwall, England. He went to school in Penzance and in Truro. In 1794 his father died, to help his family financially he got a job as an apprentice to a surgeon. The surgeon\'s name was J. Binghan Borlarse. In 1797 Davy became interested in Chemistry. So in 1778 he became superintendent of the Medical Pneumatic Institution of Bristol. T
Sir Isaac Newton Sir Isaac Newton Isaac Newton, possibly one of the greatest scientific geniuses of all time, led a long and important life. Newton was an English scientist, astronomer, and mathematician who made significant contributions in many fields of scientific and mathematical reasoning. Newton also made important contributions to physics and astronomy. Throughout his life, Newton discovered and published many of his theories, inventions, and ideas. He devised three major laws of motion,
Sir Isaac Newton Sir Isaac Newton Isaac Newton, possibly one of the greatest scientific geniuses of all time, led a long and important life. Newton was an English scientist, astronomer, and mathematician who made significant contributions in many fields of scientific and mathematical reasoning. Newton also made important contributions to physics and astronomy. Throughout his life, Newton discovered and published many of his theories, inventions, and ideas. He devised three major laws of motion,
snakes motabolism ?Snakes Metabolism Eating, or ingesting food, is one of the main characteristics of the animal kingdom. Most of these animals metabolize their food at a rapid passe. But the metabolism of a snake is much slower then many other animals. This is due to one major factor. That is the temperature in which their bodies are. The metabolism works the same as other animals. It is just slower in a snake. The metabolism needs to be slower since the snake doesn?t eat very often. This paper
term paper on chaos The Theory of Chaos Where chaos begins, classical science ends. Ever since physicists inquired into the laws of nature, they began to explore the irregular side of nature, the erratic and discontinuous side, which has always puzzled scientists. They did not attempt to understand disorder in the atmosphere, the turbulent sea, the oscillations of the heart and brain, or the fluctuations of wildlife populations. All of these things were taken for granted until in the 1970\'s. Th