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Phosphorus- Nicole

This version was saved 11 years, 5 months ago View current version     Page history
Saved by Nicole G
on October 19, 2012 at 6:41:11 pm
 

                                                                                                              

                                   http://www.myparkingsign.com/Parking-Space-Sign/Letter-P-Sign/SKU-K-6295.aspx                                                     http://www.narvajoesuu.ee/failid/Image/Hotel/parking_sign.png

What is Phosphorus?

http://education.jlab.org/itselemental/ele015.html

http://www.rsc.org/periodic-table/element/15/phosphorus

https://www.google.co.uk/#hl=en&q=allotrope&tbs=dfn:1&tbo=u&sa=X&ei=hdCBUP_yG8viyAHqkYHIDA&sqi=2&ved=0CBwQkQ4&bav=on.2,or.r_gc.r_pw.r_qf.&fp=9cc6ce1e3edfb4fe&bpcl=35466521&biw=571&bih=646

       Phosphorus is a nonmetal element, with a symbol P and atomic number 15. Phosphorus was discovered in 1669 by Hennig Brandt, by boiling, filtering and processing buckets of urine. Now a days we obtain phosphorus from phosphate rock. It is a solid at room temperature and has three main allotropes ("Each of two or more different physical forms in which an element can exist.")

 

White phosphorus is poisonous and can ignite involuntarily when in contact with air (approx. 300C). It gives off smoke and glows in the dark when in contact with oxygen, this is where phosphorus got its name, which in greek means "light bearing", 'phosphoros'.

Red phosphorus is formed by heating white phosphorus to 2500C. It is not poisonous and is more stable.

Black phosphorus is the least reactive form of phosphorus

 

                                                                    White                                     Red                                    (violet)                             Black

                                                            File:PhosphComby.jpg

 

 

 

 

 

http://upload.wikimedia.org/wikipedia/commons/8/88/PhosphComby.jpg

What is atomic number?                                               

http://www.ndt-ed.org/EducationResources/HighSchool/Radiography/atomicmassnumber.htm / notes

 

Atomic number is the number of protons in the nucleus of an atom. For example, Phosphorus has an atomic number of 15. Meaning, it is the only element that has 15 protons and an atomic number of 15.

 

                                           < This image shows Phosphorus's 15 negative electrons orbiting the atom's nucleus of 15 protons 

 

 

 

What is atomic mass?

http://www.windows2universe.org/physical_science/physics/atom_particle/atomic_mass.html

Atomic mass is the measurement of the mass of an atom. About 99% of an atom's mass comes from its nucleus. The atom's nucleus is made up of protons and neutrons. When you add up the number of protons and neutrons of an atom, you get the atomic mass. Phosphorus has an atomic mass of 30.973762, so approximately 31. 

 

 

What contains Phosphorus?

http://www.lenntech.com/periodic/elements/p.htm

http://www.phosphatesfacts.org/faqs.asp

 

 Fertilizers (http://www.wisegeek.com/what-is-phosphorus-fertilizer.htm): Phosphorus is a natural nutrient need for plant growth and health. It plays a role in photosynthesis, cell division and the plant's ability to use sugars and starches. Plants absorb the phosphorus through their roots. Phosphorus is found in fertilizers because it is an efficient way of supplying plants with need phosphorus.

                                                                                                        

http://1.bp.blogspot.com/_GYu5eN8tEBI/TPgOKTIa2nI/AAAAAAAAAPU/qpkZD1qhpGA/s1600/fertilizer.jpg

 

None-Safety Matches:

 

Red phosphorus is found at the "head" of matches. Phosphorus is the active ingredient that when stricken on a rough surface, ignites by frictional heat. 

 

 

                        File:Zapalky makrofoto.jpg

 

http://www.photo-dictionary.com/photofiles/list/833/1261matches.jpg                                         http://en.wikipedia.org/wiki/File:Zapalky_makrofoto.jpg

 

Humans http://www.umm.edu/altmed/articles/phosphorus-000319.htm):  Phosphorus is the second most abundant mineral in the human body. Calcium, being the most abundant mineral in the body, works closely with phosphorus to build strong bones and teeth.

Phosphorus helps: filter out waste in the kidneys  

                         the body store and use energy 

                         the growth, maintenance, and repair of all tissues and cells

                         produce DNA
                                                                            

http://futurity.org/wp-content/uploads/2010/02/teeth2.jpg

 

 

 

 

 

Military Applications:(http://www.fas.org/programs/bio/factsheets/whitephosphorusfactsheet.html)(http://www.globalsecurity.org/military/systems/munitions/wp.htm) Phosphorus is used in military grenades, and mortar and artillery shells. It is used to mark targets and provide a smokescreen. The phosphorus is highly active and ignites once in contact with oxygen. It bursts into flames and creates a dense white smoke.

http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2009/1/21/1232561961477/White-Phosphorus-001.jpg

 

 

 

 

http://www.rsc.org/periodic-table/element/15/phosphorus

 

 

 

 

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