â¢ Graduate Medical Education (GME) for physicians. Inpatient care units at a VAMC can be categorized into two general types; from lowest to highest patient acuity: Medical / Surgical (M/S) and Intensive Care Unit (ICU).
That means that the different types of metals used in the stars each have a characteristic color. Here are some of the metals and specific compounds that are typically used in fireworks to produce different colors: Red: strontium (strontium carbonate, SrCO3), for intense reds and lithium (lithium carbonate, Li2CO3, or lithium chloride, LiCl) for medium reds. Orange: calcium (calcium chloride, CaCl2)
It is also used as a corrosion inhibitor in aluminum alloys as the compound strontium chromate, and, since it burns with a bright red color, strontium and fireworks go hand in hand. The same compound used in toothpaste, strontium chloride hexahydrate, is used as well in the manufacture of magnetic materials.