Atomic theory is the idea that matter is made up of small particles made of atoms. The atomic theory first had 5 points which were stated by John Dalton who came up with it. The first one was that all elements were made up of small units called atoms. The second one was that all atoms of a given element are identical to each other. Third‚ all the atoms were different from all the other atoms. Fourth‚ atoms of different elements combined together in equal numbers to form compounds. Fifth and final
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Determination of Trace Amount of Copper and Zinc in an Aqueous Solution by Atomic Absorbance Spectroscopy Abstract: The purpose of this experiment is to analyze a sample containing copper and zinc in trace amounts‚ where standard addition method was used and the instrument used is the atomic absorbance spectroscopy. The amount of copper obtained was 0.569 ppm ± 0.015 and for zinc we obtained 0.42 ppm ± 0.0027. Introduction: This method implies the excitation of particles in the solution sample
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1. a) Democritus reasoned that if matter could be infinitely divided‚ it was also subject to complete disintegration from which it can never be put back together. However‚ matter can be reintegrated. b) In Greek‚ the prefix "a" means "not" and the word "tomos" means cut. Our word atom therefore comes from atomos‚ a Greek word meaning uncuttable. All matter is composed of atoms‚ which are bits of matter too small to be seen. These atoms CANNOT be further split into smaller portions. 2. At
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The Atomic Bomb: Effects on Hiroshima and Mankind The nuclear bomb was the most devastating weapon ever created by man. It was developed between 1942 and 1945 during the second World War. The project to build the worlds first atomic weapon was called The Manhattan Project. The nuclear bomb was based on the idea of splitting an atom to create energy‚ this is called fission. Three bombs were created‚ "Trinity"‚ "Little Boy"‚ and "Fat Man". "Trinity" was dropped on a test site in New Mexico on July
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The Development of the Atomic Theory Have you ever wondered how the atomic theory came to be? Or have you have wondered who it was that helped in its development? There was not just one man who came up with the atomic theory‚ but there were many scientists that contributed to its development. One of these scientists was Democritus‚ a Greek philosopher. Democritus was the son of Hegesistratus‚ and he was a student of Magians and Chaldaeans. By some authorities he was thought of as the greatest
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ANTACIDS- Classification and Mechanism of Action INTRODUCTION Antacids are defined as a substance‚ generally a base‚ which counteracts stomach acidity. The name antacid means anti-acid (against acid). Antacids are the primary treatment for ailments such as gastric reflux‚ gastritis‚ upset stomach and heartburn. Hydrochloric acid is secreted by the stomach to kill harmful organisms‚ aid digestion and activate digestive enzymes. Excess secretion of acid into stomach or impaired resistance by
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United States dropping on atomic bomb on Hiroshima was one of the most controversial topics of 1945. Many believe that the United States decision to drop this atomic bomb on Hiroshima‚ was a diplomatic measure intended to scare the Soviet Union after the Second World War; however‚ this is untrue. The United States decision to drop the atomic bomb on Hiroshima was done entirely to scare the Japanese army‚ and force them to surrender. The United States choice to drop the atomic bomb‚ strictly for the
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The effects of the atomic bomb were terrible. There’s no doubt in my mind that the atomic bombs dropped on Hiroshima and Nagasaki were a costly mistake. Atomic bombs produce heat millions of degrees high‚ and visible ultraviolet and inferred rays.(Lapp 844) Everyone and everything exposed to their blast is affected. No one is left untouched‚ whether it be emotional or physical; in many cases both. However‚ many members of the science community argue that the atomic bomb was a great advance in technology
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the atomic bombs. By doing this‚ there would be many benefits‚ but also some very harsh consequences. The atomic bombs were necessary to end the war because they allowed the US shut things down quickly‚ they assisted the US with showing it’s power‚ and it helped get justice for the soldiers that have already lost their lives fighting for their country. The main reason the US felt the need to drop the atomic bomb was because it was crucial for them to end this war once and for all. The atomic bombs
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Was the Atomic Bombing Justified? The Atomic Bomb made a very serious statement at a time when the world was in disarray (“Manhattan”). World War II was one of the most destructive times in history causing over 50 million deaths and leaving behind mental and physical casualties of war. (“World War II”) It started in September‚ 1939 when Germany invaded Poland and continued on a destructive path through Europe. Britain and France declared war on Germany. Two years prior in 1937‚ the Sino Japanese
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