jan 1, 1650 - Robert Boyle
Description:
believed that the 4 elements theory could be improved on. Published "The Skeptical Chemist" which he defined an element "certain simple unmingled bodies". helped lay the foundation for concepts of elements and compounds. Air was not an element but a mixture and that elements could combine to form compounds.Added to timeline:
Date:
jan 1, 1650
Now
~ 376 years ago