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Atomic Mass Mass Spectrometer
455 wordsThe moles beginning is traced back to the most basic units of matter, atoms. Since atoms are extremely small, scientists have perplexed a great deal over finding a way to measure atomic mass. They struggled to find a universal container that had the capability to mass atoms. Measuring the mass of one atom on a balance in grams is not practical, because the result in grams is an amount too small to be of any use in the laboratory. Fortunately, a new idea came about. If two or more same amounts of...
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Degrees Celsius Atomic Mass
318 wordsAn American Chemist named Glenn T. Seaborg discovered plutonium in 1941 at Berkeley University in California. The discovery of Plutonium was not announced until 1946 because America was at war with Japan and Germany. Plutonium was named after the planet Pluto, after the planet Neptune in the solar system and Neptune gave its name to Neptunium. Plutonium is a silvery metal that turns yellow when exposed to air. It is warm to the touch due to the releasing radioactive energy from it. The atomic nu...
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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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University Of Cambridge Nobel Prize
1,240 wordsT 3 IBS Chemistry Historical Development of Atomic Structure The idea behind the atom goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning not divisible. Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea of a molecule. Then, in 1766 was born a man named J...
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University Of Cambridge Alpha Particles
664 wordsRutherford was born on August 30, 1871, in Nelson, New Zealand. He was educated at the University of New Zealand and the University of Cambridge. He was a professor of physics at McGill University in Montreal, Quebec from 1989 to 1907. He was also professor at the University of Manchester in England. After 1919 he was professor of experimental physics and director of the Cavendish Lab at the University of Cambridge moreover held a professorship, after 1920, at the Royal Institution of Great Brit...
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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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Nuclear Fusion Atomic Mass
683 wordsby I Helium Helium by I aint telling you! ! ! Pierre Janssen discovered helium in the sun in 1868. Janssen originally thought it was sodium, but Joseph Norman Lockyer noticed that it didnt correspond to the D 1 and D 2 lines of sodium. He named it the D 3 line. Lockyer said that the element D 3 was unknown on Earth. He and Edward Franklin concluded on the name Helios after the Greek god of the sun. Helium is found everywhere in space. All natural gases have at least a little bit helium in them. ...
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H 2 O Mass Spectrometer
531 wordsAMass Spectrometer Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. ...
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Atomic Mass Periodic Table
315 wordsHistory of the Periodic Table In the 1800 s fifty to sixty of the elements in the current periodic table were already discovered. This prompted the scientist of the time to try to construct a table with all the elements of the time in it. Most of the scientists were trying to construct the table by order of atomic mass or by small groups of similar elements. In 1817 a German scientist, Johann Wolfgang Dobereiner, found that certain elements formed groups of three with similar characteristics. Do...
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University Of Cambridge Nobel Prize
1,250 wordsYazan Fahmawi T 3 IBS Chemistry Ms. Redman Historical Development of Atomic Structure The idea behind the " atom" goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning " not divisible. " Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea...
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Sodium Hydroxide Hydrochloric Acid
600 wordsBack titration: Work to be done: To find out the atomic mass of a substance using a method called back titration. Chemicals and apparatus: Magnesium Beaker Glass Burette Distilled water Methyl red 0. 5 M sodium hydroxide, NaOH 1. 0 M hydrochloric acid, HCl Lab-work: The name of the experiment explains the way of doing it quite well. You do measure how much you have of the substances and then do the titration. My mission was to find out the atomic mass of magnesium. I took a sample and weighted i...
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