What most people know about alchemy is that alchemists were looking for a magical way to convert lead or other common material into gold. They were also looking for a magical formula for immortality. This is a rather simplistic view of a discipline that changed and evolved over a thousand years' time.
In the beginning, alchemy was science, although rudimentary from our modern point of view. You could call it beginner's chemistry. Alchemists did experiments to learn the properties of materials and what could be done with them, although their theories were often derived from philosophy, religion, and a belief in what we would today call magic. Alchemists were mysterious, because those hoping to manufacture gold kept their activities private, and even with those who didn't, it was hard for anyone to understand what they were doing.
In the 16th century, there came to be a split between alchemy and pure science without the philosophy attached. Religion also moved on and considered alchemy to be heretical. But the alchemists made some pretty important discoveries while they were trying to manufacture gold. Read about alchemy and how it changed over time at Mental Floss.
(Image credit: Joseph Wright of Derby)
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