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1. What is an atom, what is an atom composed of and what are the charges of each…
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atomic and subatomic particles. Next, in the discussion of chemistry he talks about the main…
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(McPhee, 2010) The scientists of the 19th centuries renewed their interest in the Atomic Theory •John Dalton suggested that all matter was composed of small particles - atoms, each element had a different atom and a different atomic weight, theorized that atoms could not be created or destroyed in chemical reactions (1804) •In his attempt to classify the elements by principles, Dmitri Mendeleev arranged the elements by their atomic weight, discovering the existence of periodicity of the atoms (1869) •J.J. Thomson discovered electrons through his cathode ray experiment and proved that atoms were divisible(1897) (McPhee, 2010), ("A brief history," 2005) 20th century concepts and discoveries •Earnest Rutherford discovered that there was a small, dense positively charged nucleus, predicted the existence of neutrons, stated that electrons move rapidly in the empty space around the nucleus (1909-11) •In continuation of his experiments J.J. Thompson determined that all particles had charges that were multiples of the same number •In 1913 Robert Millikan accurately determined the mass of election…
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Six scientists were chosen to see which one had made the greatest contribution to our current understanding of the atom’s structure. Our knowledge of an atom’s appearance and structure have evolved from years and years of development and contribution from many different scientists. Scientist Ernest Rutherford had been the best contributor to the understanding of the atomic structure. Why Rutherford was chosen is because his work had information on protons, neutrons, and electrons, the main components that make up the atom, showed what the atom looks like when the three are put together, and had also been the discoverer of the nucleus which is the one of them most important parts of the atom’s structure.…
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Wolverine, otherwise known as James Howlett, is a prime member of X-men and the Avengers. James was born to John and Elizabeth Howlett, affluent landowners in Alberta, Canada. He made friends with the groundskeeper's son, referred to as “Dog”. Thomas Logan, Dog’s father, entered the Howlett household in an intoxicated state to take his former lover Elizabeth away. When John seeked to stop Thomas, he is shot. James entered the room and began his first mutation leading to the death of Thomas Logan. He ran with wolves and hunted as an animal, eventually living with a pack of wolves for multiple years.…
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They discovered that those cathode rays were a stream of negatively charged particles which they called electrons. The exact value of the negative charge was not known (was it 2-, 3-, 9-, 1-?).…
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Rutherford is a Physicist, Scientist. Ernest is also known as the world’s first successful alchemist. Ernest Rutherford was the first scientist to explore into the structure of the atom Unlike many people, Rutherford was not very known for his achievements like the Gold Foil experiment, which helped prove that electrons orbited the nucleus surrounded by empty space.…
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As far back, from my school years, as I can remember the word atom signified the smallest particle of matter. This is a very layman like attitude a scientist would abhor, because a scientist knows that this concept of ‘the smallest particle of matter ' has been changing rapidly over the years. The Greeks, it is said, coined the word “atom”. When this concept was articulated by the Greeks, there were no electronic equipments or high-tech labs to verify and further explore this “atom”. Technological advances have given today’s physicists the needed methods and means to explore matter in ways never possible in the early days of the atom.…
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William Paterson (Patterson) was born in County Antrim, Ireland, in 1745. When he was almost 2 years of age, his family emigrated to America, disembarking at New Castle, DE. While the father traveled about the country, apparently selling tinware, the family lived in New London, other places in Connecticut, and in Trenton, NJ. In 1750 he settled in Princeton, NJ. There, he became a merchant and manufacturer of tin goods. His prosperity enabled William to attend local private schools and the College of New Jersey (later Princeton). He took a B.A. in 1763 and an M.A. 3 years later.…
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Johnny Johnson never knew that he was special, in fact, he was taught to think the exact opposite. As a child, Johnny’s was neglected the love and affection that he deserved. Johnny’s parents told him that he was not going to go anywhere, or do anything with his life. It was not until Johnny was seventeen that he found out why. Johnny was adopted.…
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historical development: Democritus; Aristotle; Dalton (postulates, law of definite proportions, law of multiple proportions, atomic model); J.J. Thompson (atomic model and electron discovery); Rutherford (atomic model and gold foil experiment); Bohr’s atomic model and origin of discontinuous energy levels; Heisenberg and electron cloud’s model; Schrodinger and wave functions…
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In 1913, a Danish physicist named Niels Bohr put Rutherford's findings together with the observed spectra to come up with a new model of the atom in a real leap of intuition. I believe that the Bohr’s model of atom explains well about the atomic theory, because in his experiments it is shown and explained the structure of an atom. His famous suggestion is about that the electrons orbit around the nucleus of an atom. Bohr experimented with atomic spectrum that proved his suggestion.…
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Ernest Rutherford’s Gold Foil Experiment was a major stepping stone one the way to discovering what the atom was really made up of. From the beginning of his research with alpha particles to his discovery of the atomic nucleus, Rutherford made many contributions to the microscopic world of the atom. The Rutherford Experiment, otherwise known as the Gold Foil Experiment, was the crown of his achievements, and it was during this experiment that he discovered the atomic nucleus. (Aydin &Hanuscin, p.59) He made this happen by putting his past research on alpha particles to the test, such as the knowledge that an alpha particle should be less massive than the atom. Therefore the alpha particles should pass directly through the atom, unfazed. When the particles started to reflect off of the atoms in obtuse angles, Rutherford began to question the plum pudding model of the atom. It did not take him long to scientifically prove the model wrong, it only took about 2 years after the initial experiment to get enough proof to disprove the Plum Pudding Model and publish his own atomic model, The Rutherford Model. This article will be focusing on Rutherford’s Gold Foil experiment and how the experiment’s results changed how scientists would look at the structure of the atom for many years to come. (Nagendrappa, p.1013,1014)…
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Bibliography: /b><br><li>John Turner. The Arms Race. New York: Press Syndicate of the University of Cambridge, 1988.<br><li>Mark Lambert, Keith Lye, Ron Taylor and Keith Wicks. All Color Book of Science Facts. New Jersey: Chartwell Books Inc, 1984.<br><li>James Stokley. The New World of the Atom. New York: Van Rees Press, 1970.…
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"What Is Atomic Theory?" WiseGEEK: Clear Answers for Common Questions. Web. 23 Oct. 2011. .…
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