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)
The source of most fireworks is a small. tube called an aerial shell that contains. explosive chemicals. All the lights, colors, and sounds of a firework come from these. chemicals. An aerial shell is made of gunpowder, which. is a well-known explosive, and small globs of. explosive materials called stars (Fig. 1). The. stars give fireworks.