Calcium sulfate an unusual property: when mixed with water at normal (ambient) temperatures, it quickly reverts chemically to the preferred dihydrate form, while physically "setting" to form a rigid and relatively strong gypsum crystal lattice: This reaction is exothermic and is responsible for the ease with which gypsum can be cast into various shapes including sheets (for drywall), sticks (for blackboard chalk), and molds (to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts of calcined gypsum are added to earth to create strong structures directly from cast earth, an
That's What Girls Are Made For successful run for the group, who later found success with neighboring Detroit label Motown Records in the mid-1960s and Philadelphia soul-based records with Atlantic Records in the 1970s. That's What Girls Are Made For "That's What Girls Are Made For" is the debuting single for the American R&B/Soul vocal group The Spinners, released on Harvey Fuqua's Tri-Phi Records label in 1961. The single featured most of the original members of the group including original lead singer Bobby Smith and featured a very young Marvin Gaye playing drums. Harvey Fuqua and his then-girlfriend Gwen Gordy made the song simply for them