Oldest applied science
Stone age man learned to fashion gold into ornament and some jewelry
Made into tools for royalty and kings
Not found free in nature but Galena (lead Sulfide) was used as eye paint by Ancient Egyptians. Galena put into a campfire , makes Lead, its melting point is 327 C.
Found free in nature, used as Jewelry and the measure of wealth
Not free in nature, was reduced by charcoal and at first was thought to be a form of lead.
Iron weapons revolutionized warfare and they implements did the same for farming
Ancient say it was poisonous ant they also tried squeezing it through leather
wasn't classified as an element until 1753
Cadmium's boiling point is lower than Zinc
After discovery, 20 years later it was put to good use