#Alchemy is the #protoscience that was a precursor to modern #chemistry. It is a mix of #religion, #mysticism and a few practical observations. With the rise of the scientific method, the relatively simplistic base of alchemy transmuted slowly into a gleaming nugget of pure chemistry.
It's quite hard to nail down what alchemists believed in general. For a start, they tended to disagree with each other as to the details of what they did. Their books were confused and misleading. On the one hand, they did not want anybody else to know the "secrets" that they had laboured so long to discover; on the other, they most likely didn't really know what they were talking about anyway (all the better reason to keep it a secret).
#RationalWiki
https://rationalwiki.org/wiki/Alchemy