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Stephanie Lopez. About nitrogen. Tasteless, colorless, and unscented gas. Symbol “N” found in the periodic table Atomic number “7” makes up 78 % volume and 75 % of the weight of Earth’s atmosphere. does not combine with other elements. Dissolves in water. 

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about nitrogen
About nitrogen
  • Tasteless, colorless, and unscented gas.
  • Symbol “N” found in the periodic table
  • Atomic number “7”
  • makes up 78 % volume and 75 % of the weight of Earth’s atmosphere.
  • does not combine with other elements.
  • Dissolves in water. 
  • Discovered by Daniel Rutherford. (1772) First called it “Noxious air” and “Fixed air”.
  • Renamed by Jean-Antoine Chaptal (1790)
  • Can be found in all living organisms.
properties
Properties
  • A non-metal element.
  • almost an “inert” diatomic gas. (Halogen)
  • Trivalent with most compounds, since it has 5 electrons in its outer shell.
  • Density of N in STP: 1 mol = 22.4 L mass of N2 is 28.0 g/mol 28.0 g/22.4 L = 1.25 g/L
  • Freezing Point -210°C
  • Turns into a liquid at -195.8°C ,
  • liquid density (at boiling point) 0.808 g·cm−3
slide4

Nitrogen is commonly produced by fractional distillation of gaseous air, in factories.

  • Also laboratories mix an aqueous solution of ammonium chloride with sodium nitrite.
industrial world and our homes
Industrial World and our homes.
  • Found in most light bulbs; nitrogen substitutes argon. (saves money!)
  • Preserves packaged foods.
  • Nitrogen is also found in computer CPUs.
  • Carbon dioxide was replaced by nitrogen in paintball guns.
  • Found in many electric parts like transistors, diodes, and circuits.
  • Stainless steel contains nitrogen. Nitrogen helps the steel become more resistant to oxidization.
  • Explosives like Trinitrotoluene (TNT) are used in a restricted manner for demolish a buildings without destroying other buildings close by.
  • Nitrous oxide is also used in motor racing to increase the power of the engine.
pharmaceutical and agriculture
Pharmaceutical and Agriculture
  • An essential ingredient for all fertilizers. (Promotes plant growth)
  • Nitrous oxide (laughing gas N2O) is used in hospitals and dental clinics as an anesthetic.
  • Since liquid nitrogen is extremely cold it is used to remove unwanted tissues and warts.
  • Liquid nitrogen is used to preserve blood and reproductive cells. (Cryopreservation)
  • Found in almost every major drug and antibiotics.
  • However too much NO2 in our air (from many factories) can be very harmful to plants, and people.
sites credited
Sites Credited
  • http://www.buzzle.com/articles/nitrogen-uses.html
  • http://science.howstuffworks.com/nitrogen-info.htm
  • http://en.wikipedia.org/wiki/Nitrogen
  • http://www.epa.gov/ttn/naaqs/standards/nox/s_nox_index.html
  • http://www.nbcnews.com/science/national-parks-being-hit-hard-nitrogen-based-air-pollution-8C11391275