March 16, 2011 by designingquilters Phosphorus represents the four colors of phosphorous – red, black, blue and white. Phosphorus is often used to make matches, and was first discovered from some crazy person boiling urine……
March 16, 2011 by designingquilters Actinium Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table.