http://www.theodoregray.com/periodictable/Samples/015.7/index.s12.html                                                         http://www.narvajoesuu.ee/failid/Image/Hotel/parking_sign.png

What is Phosphorus?

       Phosphorus is a nonmetal element, with a symbol P and atomic number 15.

It is a solid at room temperature,  of: white                                                                   

                                                                red   

                                                               black     and is an essential element for the life of organisms

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 and(MORE) (keep in mind, normal atoms have the same # of protons to electrons)

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

Matches:

Red phosphorus is found at the tip of matches. Phosphorus is 

http://www.photo-dictionary.com/photofiles/list/833/1261matches.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.umm.edu/altmed/articles/phosphorus-000319.htm

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