PD+6A+-+Nitrogen+Cycle

NITROGEN CYCLE   Information about Nitrogen Nitrogen is a chemical element with atomic number 7 and atomic mass with high levels over 14,000. Nitrogen is mostly on inert diatomic gas at standard conditions (78% of Earth atmosphere).

Mostly types of acids, propellants, and explosives contain Nitrogen. It have an extremely strong band in elemental Nitrogen that is very dangerous and needs a process to be able to burn to have a similar use as fuel. Nitrogen have a important part on all living things it’s a constituent element of DNA and RNA. It’s inside a chemical structure, neurotransmitters, and a component of alkaloids. Those are biological molecules produced by many organism.

**If you would like to preview a very interactive diagram of the nitrogen cycle, please click on the link below. **[]



How nitrogen is harmful to life 

Too much nitrogen in the water is very harmful to plants and animals in the water. The worst it can do is kill the plants and the animals. Most phytoplankton and cyanobacteria are harmless and so are a few dozen others that can create potent toxins if given the right conditions.

Nitrogen, is essential for life. Nitrogen is of central importance in the formation of amino acidswhich are themselves essential components of proteins and nucleic acids. As an element, nitrogen is not particularly reactive because of its great affinity for itself. Nitrogen molecules are composed of two nitrogen atoms, linked by a triple bond that is difficult to break. However, the nitrogen in the atmosphere can be converted without the expenditure of too much energy into ammonia, which is the source of nitrogen in biological compounds. 
 * ~Some of the reasons it is essential to life~ **

Humans all breathe nitrogen in and out of their lungs all the time, without any serious side effects. The nitrogen gas dissolves slightly in the blood and circulates around the body harmlessly. Under pressure however, such as when a person dives into deep water, the amount dissolved nitrogen increases. If the decompression is slow and careful, the dissolved nitrogen comes out of the body fluids and can be removed through the lungs, but, if decompression is too rapid, the 'bends' causes great pain and even death. This decompression sickness is caused by bubbles of nitrogen rapidly coming out of solution in the bloodstream.

**Denitrification **

And yet still other bacterial species can take nitrate and change it back to nitrogen gas through a process called denitrification. Denitrification is an anaerobic process. This means it only takes place when no oxygen or extremely low concentrations of oxygen are available. Denitrification also requires a source of carbon. Some of the nitrate escaping the leaching field soils is denitrified in the unconsolidated soils and groundwater as it flows to the estuary. Determining the amounts of nitrogen lost in this way is an important area of ongoing research.

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NODULES [] **
 * [[image:http://www.hcs.ohio-state.edu/mgonline/Botany/graphics/Cowpea.jpg width="317" height="263"]]

 N2 + 6 e- + 8H+ ---> 2 NH4+ (ammonium ion) NO3- + 2e- + 2H+ ---> NO2- + H2O (nitrate ion) (nitrite ion)
 * NIRTROGEN FIXING BACTERIA **

NO2- + 6e- + 2H+ --> NH4+ + 2 H2O lightning N2 + O2 --> 2 NO (nitric oxide) 2 NO + O2 ---> 2NO2 2 NO2 + H2O ---> HNO3 + HNO2 HNO3 > H+ + NO3- (nitrate ions) HNO2 > H+ + NO2- (nitrite ions)

<span style="font-size: 18pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';"> <span style="font-size: 14pt; color: #993300; font-family: 'Arial','sans-serif'; mso-fareast-font-family: 'Times New Roman';">The first step is the decay of waste products of fish, plants, and invertebrates, along with any dead organisms or uneaten food. As these materials decay, ammonia is produced, which at even low levels will burn the gills of fish and choke off their oxygen supply. http://www.drsfostersmith.com/pic/article.cfm?aid=561

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 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Name: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> Nitrogen
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Symbol: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> N
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Atomic Number: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> 7
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Atomic Mass: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> 14.00674 amu
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Melting Point: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> -209.9 °C (63.250008 K, -345.81998 °F)
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Boiling Point: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> -195.8 °C (77.35 K, -320.44 °F)
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Number of Protons/Electrons: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> 7
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Number of Neutrons: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> 7
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Classification: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> [|Non-metal]
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Crystal Structure: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> Hexagonal
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Density @ 293 K: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> 1.2506 g/cm3
 * <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">Description: **<span style="color: #00b050; font-family: 'Arial','sans-serif';"> colorless odder less gas <span style="font-size: 14pt; color: #00b050; line-height: 115%; font-family: 'Arial','sans-serif';">

http://www.daviddarling.info/encyclopedia/N/nitrogen.html
 * [[image:http://www.chemicalelements.com/bohr/b0007.gif width="213" height="211" caption="[Bohr Model of Nitrogen]"]]

[] ||  || **Number of Energy Levels:** 2 **First Energy Level:**
 * Second Energy Level:** ||

FACTS:

 * Date of Discovery:** 1772
 * Discoverer:** Daniel Rutherford
 * Name Origin:** Greek
 * Uses:** forms most of atmosphere
 * Obtained From:** from liquid air