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Degrees Celsius Boiling Point
348 wordsSodium is an element found in the forest in its natural form. The atomic has and atomic number is 11 so it means it has 11 protons and 11 electrons. The Elements can be used in many formulas to make a compound. Its atomic number is 22. 989770. The elements boiling point is 883 degrees Celsius. The melting point is 98 degrees Celsius. The density is 968 grams. Sodium is an element that is found in the forest at its combined state. The element was discovered by Sir Humphry Davy. It was discovered ...
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Valence Electrons Periodic Table
854 wordsThe periodic table is simply the organization and classification of different elements. By the end of the 1700 s, scientists had identified about 30 elements. In less than 100 years, the number of known element doubled because of new means of recognizing them. In the early 1800 s, Dobereiner observed that there were elements that could be classified into groups of 3, or triads. These triads were significant because these classifications of similar elements represented the very beginning of the p...
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Atomic Weight Periodic Table
1,546 wordsAt first glance, nature appears to consist of countless numbers of very different materials. The world thus appears to be an extremely complex mixture of many different materials. But philosophers and scientists have long held another view of the world. They have found it difficult to believe that nature is really as complex as it appears to be. Instead, they have assumed that the many different materials we see result from the combination of a small number of fundamental substances called eleme...
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Increasing Atomic Number Increasing Atomic Electron
236 wordsThe first ionization energy IE 1 is the energy required to remove the one electron from a gaseous atom. With this the effective nuclear charge increases and thus it takes more energy to remove the next electron. IE 2 is always greater than IE 1. Each subsequent electron becomes harder to remove. In the plot below it is apparent that there are periodic patterns to the first ionization energies. Within a given row the ionization energy increases with increasing atomic number. Atoms with filled or ...
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Periodic Table Atomic Number
299 wordsDmitry Ivanovich Mendeleyev (1834 - 1907) Dmitry Ivanovich Mendeleyev was Russian chemist, known for his development of the periodic table of elements. This is a table created to arrange the elements by their atomic number. Mendeleyev was born in Tobolsk, Siberia. He studied chemistry at the University of Saint Petersburg, until 1859 when he was sent to learn at the University of Heidelberg. Where he became aquatinted with the Italian chemist Stanislao Cannizzaro, whose views on atomic weight ch...
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Atomic Mass Energy Level
283 wordsWhat is an element: Simple substances that can not be broken down into simpler substances. What is an atom: smallest part of an element that can be identified as an element. How do you right a chemical symbol: If it is one letter capitalize it, if there are two letters capitalize the first letter but not the second. Malleable- metals that can be hammered into thin sheets like aluminum foil. Ductile- metals that can be drawn into wire. Luster- shine Brittle-breaks easily Who stated the atomic the...
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Speed Of Light Magnetic Fields
251 wordsRadiation: Properties Of Different Types Of Radiation Radiation: Properties Of Different Types Of Radiation Alpha particles: consists of 2 protons and 2 neutrons (Helium nucleus) highly ionizing therefore they strongly attract electrons have a charge of + 2 bent by electric and magnetic fields but not as much as beta due to larger mass relatively heavy and slow moving absorbed by skin / 5 cm air / card therefore it has poor penetrating power Beta Particles: a fast moving electron in beta radiati...
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