Materiais, equipamentos, métodos e objetivos: outra revolução química?
DOI:
https://doi.org/10.1590/S1678-31662012000400003Keywords:
History of chemistry, Chemical revolution, Chemical experiments, KuhnAbstract
Amongst the different factors associated with a paradigm shift, and hence with a chemical revolution, the least discussed is that involving the so-called exemplary experiments: radical changes in chemistry's methodology and empirical procedures. In the case of natural and empirical sciences such changes may lead to obtaining previously inaccessible experimental data, and ultimately to a new approach to concepts, theories and hypotheses, that becomes the triggering factor for a chemical "revolution", a new paradigm. Much more than a chemical revolution, we should consider a gradual chemical evolution. We chose three situations as "exemplary": the change of empirical procedures in pneumatic chemistry with the use of the pneumatic trough containing mercury; the introduction of solvent extraction in substitution to the pyrogenic method for the extraction of natural organic compounds; a new understanding of "chemical analysis" associated with the substitution of sample comparison by analytic decomposition.Downloads
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2012-01-01
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Materiais, equipamentos, métodos e objetivos: outra revolução química? . (2012). Scientiae Studia, 10(4), 671-680. https://doi.org/10.1590/S1678-31662012000400003