Related Experiment Video
Updated: Jul 29, 2026

The Portable Chemical Sterilizer (PCS), D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military
Published on: June 29, 2014
Operational practice and the emergence of modern chemical concepts
Abstract:
Both "early chemistry" and "modern concepts" are imprecise. The earliest references to the materials involved in metallurgy, painting, ceramics, and the like, reveal an awareness that one group of materials were called "salts" because of their similarities. I consider this a chemical "concept." Seeking another example I claim to have found it is the so-called "mineral acids." The evidence for the existence of this concept is cumulative during the period just before the emergence of "modern chemistry," of which it may be considered a cause. That evidence is particularly found in the literature of pharmacy and of medicine, both of which belong to the practical arts.
More Related Videos
07:24Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
Published on: February 19, 2018
05:34Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods
Published on: June 6, 2025
Related Concept Videos
Chemical Reactions
Chemical Reactions Rearrange Atoms into New Substances
A chemical reaction takes starting materials—the reactants—and changes them into different...
The Scientific Method
The Atomic Theory of Matter
Chemical Reactions
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in...
Introduction to Chemical Reactions
What is Physical Chemistry?