The gelatinous form of gasoline that burns the skin of anyone exposed to it that was dropped by American airplanes on enemy positions during the Vietnam War was called:

The correct answer to this open question is the following.

The gelatinous form of gasoline that burns the skin of anyone exposed to it that was dropped by American airplanes on enemy positions during the Vietnam War was called: Napalm.

Napalm, technically called naphthenic palmitic acid was invented in 1942. It's a gasoline-based, defoliant that produces temperatures over 2000 degrees. This weapon was used in the Vietnam War. Almost 388,000 tons of napalm was dropped from 1968 to 1973. The wounds caused by napalm are difficult to heal. It was a terrible and destructive weapon.