“Chemistry and Alcheymy; These come from the original name of the land of Egypt, Khem (Khenn). This meant the “Black Land.”

But Khem was the cradle of the naturopathic arts, of chemistry and herbalism as well as other sciences of the body. This is why the words Chemistry and Alchemy, still bear the root and why the medical profession still uses the Caduceus of Hermes or Thoth, Egyptian gods of healing.”

Source: Astro-Theology Etymology and Sidereal Mythology Tarot Astronomy