Wasserstoffproblem
Wasserstoffproblem is a term used in German-language discussions to denote two related strands of inquiry concerning hydrogen. In historical contexts, it refers to debates surrounding the discovery and naming of the element and its relation to water. Henry Cavendish identified a flammable gas as inflammable air in the 18th century. Antoine Lavoisier later named the element hydrogen, from Greek hydōr (water) and genes (creator), on the observation that it forms water when burned; in German the element is called Wasserstoff, literally “water-former.” The phrase has appeared in discussions about how naming conventions reflect and shape chemical knowledge, and about the process of standardizing terminology within the developing chemical nomenclature and the later IUPAC framework.
In modern usage, Wasserstoffproblem also denotes challenges related to hydrogen as an energy carrier and feedstock.