Lesson 3.01: History of the Periodic Table 1. Explain how scientific observations led to the development of‚ and changes to‚ the periodic table. Dmitri Mendeleev- first periodic table‚ organized 63 known elements according to properties‚ organized into rows and columns. He wrote names‚ mass and chemical properties on each. Julius lothar Meyer- independently worked in German ‚ similar to Mendeleev Henry Gwyn Jeffrey’s Moseley: worked with Ernest Rutherford experimented with 38 metals‚ he found that
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"The Demon Lover” is a confusing short story because it can be interpreted in different ways. Some people might consider it a ghost story. Others might think it is a psychological thriller‚ which makes sense due to the fact that Mrs. Drover presents signals of having a mental problem. However‚ I decided to go with the ghost story for two reasons: it makes it more fun and I feel like there’s more evidence I could use to support that statement‚ even though I do agree she has some kind of mental problem
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Two conditions for equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. In the experiment done‚ conditions for equilibrium are observed. Equilibrant forces were determined using the force table and component methods. The unknown forces were also determined using the first and second conditions for equilibrium. Another part of the experiment was to locate the center of gravity of a composite body and to determine rotational equilibrium.
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the history of its international operations (if applicable) Innospark is a company created by Vita Markevičiūtė. Innospark produces and sells educational toys for children. Creative education is what they believe in. The educational play light table is their main product and it develops the creativity and the constructive thinking of the children. In June 2012‚ Innospark was created in Lithuania. The owner of the company developed it quickly and succeeded to make his first sales revenues in October
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Promethium‚ Pm‚ is the 61st element on the Periodic Table. It was discovered in 1945 by Jacob A. Marinsky. It’s a metal‚ and named after the Greek God Prometheus. It is not naturally occurring‚ but can survive outside of a lab. Promethium has an atomic number of 61‚ which is the number of protons. Its atomic mass‚ protons+neutrons‚ is 145u. It is an isotope. This means that it has a different number of neutrons (84) than the number of electrons and protons (61). Every element changes states
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Alice Walker was born on February ninth 1944‚ the youngest of eight children raised by Willie Lee Walker and Minnie Lou Tallulah Grant. As a child Alice’s parents worked hard‚ her mother worked for eleven hours for $17 per week. When walker was young her mother defended her kids from working in other peoples fields by saying "You might have some black children somewhere‚ but they don’t live in this house. Don’t you ever come around here again talking about how my children don’t need to learn how
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Kara Walker‚ born November 26th‚ 1969 in Stockton‚ California‚ USA‚ is a contemporary American artist who earned her bachelor degree from the Atlanta College of Art and her master’s degree at the School of Design in Rode Island. Since then‚ she has created more than 30 large scale installations‚ produced hundreds of artworks and presented her work at more than 40 personal exhibitions and galleries. In 1997 Walker participated in Whitney Biennial‚ held in New York‚ and during the same year‚ at
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Women by Alice Walker Women have been through a lot‚ they always seem to be over worked yet under appreciated. Even during the biblical times‚ women were expected to be housekeepers‚ cooks‚ as well as care givers‚ while still having to satisfy their husband needs and desires. It was very seldom in these societies as well as present societies that someone openly and sincerely appreciates all the things that women have done for them and the people around them. In “Women"‚ Alice Walker breaks through
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In the novel‚ The Moviegoer‚ by Walker Percy‚ the narrator‚ Jack Bolling‚ believes that everyone has a role to play and that their happiness is predicated upon how well they play their given role. He also believes that people get trapped in "everydayness" and become "dead". Jack Bolling’s decision to marry Kate Cutrer is partly based on these beliefs of his‚ but it is also based upon the discovery that Sharon is engaged herself. Kate Cutrer has some mental problems of her own‚ and‚ being Jack Bolling’s
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[pic]Essay #5: Division/Classification ASSIGNMENT Write a 3-page essay classifying different types. The essay must focus on types of a specific object or person. The essay is not intended to be an inventory of descriptions‚ but rather a fun analysis that leads to an overall conclusion about what you discovered in the details of each type. Requirements • 3 pages • Introduction (creative hook/lead and use Adios “Encircling” to get into the body of the essay—a
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