Gourt > Kids and Teens > School Time > Science > The Earth > Cycles > Nitrogen
Nitrogen is a chemical element which has the symbol N and atomic number 7 in the periodic table. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78.08% percent of Earth's atmosphere. Nitrogen is a constituent element of all living tissues and amino acids. Many industrially important compounds, such as ammonia, nitric acid, and cyanides, contain nitrogen.
Notable characteristics
Nitrogen is a non-metal, with an electronegativity of 3.0. It has five electrons in its outer shell and is therefore trivalent in most compounds. Nitrogen condenses at 77° K at atmospheric pressure and freezes at 63° K. Liquid nitrogen is a common cryogen.
Occurrence
Nitrogen is the largest single component of the Earth's atmosphere (78.084% by volume, 75.5% by weight). More on [ Nitrogen ]
http://twitpic.com/w66xe http://twitpic.com/w67lk http://twitpic.com/w681w Pics from freezing fruit with liquid nitrogen!!
Homebrew_Magic (Jeff Little) Fri, 01 Jan 2010 06:17:25 -0000
http://twitpic.com/w66xe http://twitpic.com/w67lk http://twitpic.com/w681w Pics from freezing fruit with liquid nitrogen!!
The party has reached a new level of awesome: freezing fruit with liquid nitrogen and watching it shatter! Pics to come!
Homebrew_Magic (Jeff Little) Fri, 01 Jan 2010 05:57:00 -0000
The party has reached a new level of awesome: freezing fruit with liquid nitrogen and watching it shatter! Pics to come!
I've never understood this. N2O=Nitrous Oxide. NO2=Nitrogen Dioxide. I'm pretty sure i's intended to be named after the former RT @phish NO2
lawnboycj (Christopher Johnston) Fri, 01 Jan 2010 04:33:13 -0000
I've never understood this. N2O=Nitrous Oxide. NO2=Nitrogen Dioxide. I'm pretty sure i's intended to be named after the former RT @phish NO2
2010 has met me doing online research on nitrogen tanks. I do wish my hair would look better though.
MissPequena (Carmen) Fri, 01 Jan 2010 03:06:09 -0000
2010 has met me doing online research on nitrogen tanks. I do wish my hair would look better though.
CanadaRights.com Children's exposure to nitrogen dioxide in Sweden: investigating ...: Conclusions: Evidence of env... http://bit.ly/8myama
CRAcorruption (The Source) Fri, 01 Jan 2010 02:35:53 -0000
CanadaRights.com Children's exposure to nitrogen dioxide in Sweden: investigating ...: Conclusions: Evidence of env... http://bit.ly/8myama
Nitrogen, Phosphate And Potassium But What About Trace Minerals? - http://tinyurl.com/y9chy7b
lookurl (lookurl) Fri, 01 Jan 2010 01:59:35 -0000
Nitrogen, Phosphate And Potassium But What About Trace Minerals? - http://tinyurl.com/y9chy7b
Animation of Nitrogen Cycle - Presents an active diagram of this process, together with a description of each stage and component.
Human Alteration of the Global Nitrogen Cycle - An article showing human impacts at all levels of this cycle.
Nitrogen Cycle - A diagram and overview.
Nitrogen Cycle - An interactive diagram: you click on an aspect of the cycle or a state of nitrogen and the diagram will simplify to show you which part of the cycle it applies to.
Nitrogen Cycle - Diagram, facts, nitrogen fixation methods, and what fixes nitrogen.
Nutrient Overload: Unbalancing the Global Nitrogen Cycle - Shows how nutrient pollution through man can lead to algae blooms that unbalance the cycle.
Meta Description: [ Excess nitrogen from human activities has begun to overwhelm the natural nitrogen cycle with a range of ill effects from diminished soil fertility to toxic algal blooms. ]
Streams Reduce Nitrogen Pollution, Scientists Find - Article describing the finding of scientists that small streams are extremely efficient at removing some of the excess nitrogen that is flowing into waterways, endangering fish and other forms of aquatic life.
Meta Description: [ Scientists have found that small streams are extremely efficient at removing some of the excess nitrogen that is flowing into waterways, endangering fish and other forms of aquatic life. ]
The Microbial World: The Nitrogen Cycle and Nitrogen Fixation - How nitrogen gets fixed by bacteria to become available for plants on earth.
The Nitrogen Cycle - An explanation of the different forms of nitrogen on earth, nitrogen fixation, decay, and nitrification.
The Nitrogen Cycle - Learn about the nitrogen cycle, and how humans have made an impact on it. Includes a quiz.
Meta Description: [ Learn about the nitrogen cycle, and how humans have made an impact on it. ]
The Nitrogen Cycle - Diagram and explanation of the cycle.
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