Data Bases • Custom Term Papers • Free Term Papers • Free Research Papers • Free Essays • Free Book Reports • Plagiarism? Links • Top 100 Term Paper Sites • Top 25 Essay Sites • Top 50 Essay Sites • Search 97,000 Papers @ DirectEssays.com • Search 101,000 Papers @ ExampleEssays.com • Search 90,000 Papers @ MegaEssays.com Free Essays • Term Paper Sites • Chuck III's Free Essays • Free College Essays • TermPaperSites.com • Free Essays • My Term Papers • Essay World • Planet Papers	Search Lots of Essays Back to Subjects - Science Nitrogen Nitrogen Nitrogen, symbol N, gaseous element that makes up the largest portion of the earth's atmosphere. The atomic number of nitrogen is 7. Nitrogen is in group 15 (or Va) of Nitrogen was discovered by the British physician Daniel Rutherford in 1772 and recognized as an elemental gas by the French chemist, Antoine Laurent Lavoiser about Nitrogen is a colorless, odorless tasteless, nontoxic gas. It liquid, which can be compressed into a colorless, crystalline solid. Nitrogen exists in two natural forms, and four radioactive forms (artificial). Nitrogen melts at -210.01 degrees C, (-349.02 F), boils at -195.79 C (320.42 F), and has a density of 1.251 g/liter at 0 C (32 F) and 1 atmosphere pressure. The atomic weight Nitrogen is obtained from the atmosphere by passing air over is removed from the air, leaving nitrogen mixed with inert gases. Pure distillation of liquid air; because liquid nitrogen has a lower boiling point than liquid oxygen, the nitrogen distills of first an can be collected. Nitrogen compresses about 4/5ths by volume of the atmosphere. diluent for oxygen in burning and respiration processes. It is an important element in plant nutrition; certain bacteria in the soil convert atmospheric nitrogen into a form, such as nitrate, that can be absorbed by plants, a process called nitrogen fixation. Nitrogen in the form of protein is an important constituent of animal tissue. The element occurs in the combined state in minerals, of saltpeter (NaNO ) are commercially important products. Nitrogen combines with other elements only at very high converted to an active form by passing through an electronic discharge produced is very active, combining with alkali metals to form azides; cadmium, and arsenic to form nitrides; and with many hydrocarbons to cyanides, also known as nitriles. Activated nitrogen returns to ordinary nitrogen in about one minute. In the combined state nitrogen takes part in many reactions; it systematic scheme of compounds containing nitrogen in place of oxygen chemist Edward Franklin. In compounds nitrogen exists in all the Ammonia, hydrazine, and hydroxylamine represent compounds in which the and -1, respectively. Oxides of nitrogen represent nitrogen in all the Most of the nitrogen used in the chemical industry is obtained liquid air. It is then used to synthesize ammonia. From ammonia produced in this manner, a wide variety of important chemical products are prepared, including fertilizers, nitric acid, urea, hydrazine, and amines. In addition, an ammonia compound is used in the preparation of nitrous popularly known as laughing gas. Mixed with oxygen, nitrous oxide is Used as a coolant, liquid nitrogen has found widespread application in the field of cryogenics. With the recent advent of ceramic materials that become superconductive the use of nitrogen as a coolant is increasing. In conclusion, it seems as if Nitrogen is very helpful in the modern world. It is used in dentists office's to using it for industrial applications. Without this element the world would be a little different in Bibliography: Word Count: 603
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