The first comprehensive measurement of physical and chemical properties.
The independent verification of a discovery by other scientific groups.
The first recognition of a new substance, even if its nature is not fully understood.
The first recorded sighting or experimental detection of a species.
The successful separation of a substance in its pure form from a mixture or ore.
Miscellaneous historical milestones not covered by other categories.
The official designation of a formal name, often following IUPAC conventions.
The artificial production of a substance via chemical or nuclear reactions.
Milestones in the scientific history of a chemical species or phenomenon.