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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Chinese Masks Chinese masks first appeared in China some 3‚500 years ago primarily used for Chinese shamanism. Chinese masks became an age old cultural phenomenon shared by all ethnic groups in China. The Chinese developed such masks to overcome disasters and to protect their lives. These masks were given many functions like‚ communicating with the gods‚ bringing blessings‚ driving away ghosts‚ warding off diseases‚ and lots of sacrificial rituals involving masks were regularly held. Many
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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 land of the free‚ or better known as The United States of America. The reading‚ “The Chinese Exclusion Act a Black Legacy”‚ claimed the American’s beliefs influenced the bringing about of The Chinese Exclusion Act. One of these notion is that the Chinese immigrants were taking work away from the citizens of the United States. The Americans also weren’t keen to the lowering of wages‚ being that the Chinese were eager to work at whatever the pay was available. There was furthermore animosity to
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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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Week One assignment. Follow the example to document your findings in the table. Health issue: ____Obesity_______________________ Website Website Information Type Type of Surveillance: survey‚ self-report‚ statistics‚ case report‚ and so forth Data changes over time: Has the incidence increased or decreased? Identify two interventions that affect the issue. Example: http://www.cdc.gov/media/h1n1flu/index.htm#FAS Table of contents‚ search‚ print‚ videos‚ surveillance data current and past
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Joy Jenkins Changing of the periodic table Today‚ the periodic table organizes the elements in horizontal rows‚ or periods‚ by order of increasing atomic number. The elements are also organized in vertical columns‚ or groups‚ based on similar physical characteristics and chemical behavior. I believe the periodic table will continue to evolve as new elements are discovered. One of the earliest attempts to organize the elements based on their chemical and physical properties was made by German
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Chinese culture 1. Chinese Tea Culture China is the homeland of tea. It is believed that China has tea-shrubs as early as five to six thousand years ago‚ and human cultivation of teaplants dates back two thousand years. Tea from China‚ along with her silk and porcelain‚ began to be known the world over more than a thousand years ago and has since always been an important Chinese export. At present more than forty countries in the world grow tea with Asian countries producing 90% of the world’s
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Hershberger PSY-230 April 15‚ 2013 The Chinese Culture Chinese people have had the world’s most successful continuous culture for the past four millennia‚ and culture and traditions remain prominent wherever they live. Even in the twenty-first century‚ Chinese people living in China‚ Taiwan and the United States of America still value their culture and traditions. And people from Chinese culture living in Australia and the United Kingdom follow Chinese culture and traditions in relation to their
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Ancient Chinese Inventions and Contributions Strayer University HUM 111- World Culture I 30 May 2013 Introduction China is an exceptional nation that is famous for its ancient invention and contribution to both the past and the current world. Chinese invention and contribution helped greatly in creating jobs‚ engaging in Wars and still contributed to public life. This paper will highlight the top ten ancient Chinese inventions and their importance to people’s daily lives. Eight useful Chinese
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