“The well-known fact that the form of a specific substance, e.g. water, and hence its properties can alter without a change in composition was disposed of by the formal view that a physical, not a chemical, process was involved.” WellsFactsFormProcessWaterViewsKnownInvolvedPropertySubstanceChemicalsCompositionFormalWell Known Author:Wilhelm Ostwald
“The discovery of various phenomena has led to a recognition of the fact that the chemical atom is an individual which again is itself made up of several units into a selfcontained whole.” MadeWholeFactsIndividualDiscoveryVariousRecognitionChemicalsAtomsUnitsSelf Made Author:Johannes Stark