For those who only know the basics i.e. its sticky and hot. I just looked this up on the net, (dont know if its correct

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Q: What is Napalm?
A: Napalm is an incendiary substance developed by Harvard scientists cooperating with the U.S. army and used in bombs and flame throwers. Napalm is based on a mixture of gasoline and a thickening agent. Aluminum salts of napathenic acid and palmitic acid used for this purpose gave us the term napalm. The thick jelly-like material burns at up to 1830° F (1000° C) and clings to anything it touches.
Q: When and where was Napalm first used?
A: The first use of napalm occurred on July 23, 1944 during pre-invasion air strikes on the island of Tinian, part of the Marianas island chain in the Pacific.