Buscar
Mostrando ítems 31-40 de 3800
Unidades didáticas de química e prática docente: quais relações?
(Universidade Federal de Santa MariaBrasilEducação em CiênciasUFSMPrograma de Pós-Graduação em Educação em Ciências: Química da Vida e SaúdeCentro de Ciências Naturais e Exatas, 2016-08-15)
This thesis describes a research on the educational practice of the author, from the planning,
implementation and evaluation of teaching units of Chemistry, considering the conditions of
teaching practice. As a basis for ...
Electronegativity and its multiple faces: persistence and measurement
(Springer, 2017-04)
Electronegativity is a quantified, typical chemical concept, which correlates the ability of chemical species (atoms, molecules, ions, radicals, elements) to attract electrons during their contact with other species with ...
THE FORMATION OF CONCEPTS IN NATURAL SCIENCE: AN AVENUE FOR THE DEVELOPMENT OF INTERDICIPLINARIEDADLA FORMACIÓN DE LOS CONCEPTOS EN LAS CIENCIAS NATURALES: UNA VÍA PARA EL DESARROLLO DE LA INTERDICIPLINARIEDAD
(Universidad Central "Marta Abreu" de Las Villas, 2009)
Conceitos de química dos ingressantes nos cursos de graduação do Instituto de Química da Universidade de São Paulo
(Sociedade Brasileira de Química, 2008)
A diagnostic instrument was developed to evaluate the basic chemistry concepts held by freshmen students of the three Chemistry undergraduate courses offered by the University of São Paulo. The instrument minimizes the use ...
A THERMODINAMIC CORROSION STUDY OF CARBON STEELS IN HYDROGEN SULFIDE - EXPLORING CHEMICAL EQUILIBRIUM CONCEPTS
(Soc Brasileira Quimica, 2018-05-01)
This study addresses an inherent problem to the oil and natural gas exploration and production industry, the corrosion of pipes and tanks by H2S. H2S with water emulsified in the oil or H2S with the water vapor mixed in ...
Understanding Chemical Equilibrium: The Role of Gas Phases and Mixing Contributions in the Minimum of Free Energy Plots
(American Chemical Society, 2017-03)
The use of free energy plots to understand the concept of thermodynamic equilibrium has been shown to be of great pedagogical value in materials science. Although chemical equilibrium is also amenable to this kind of ...
New Perspectives on the Role of Frontier Molecular Orbitals in the Study of Chemical Reactivity: A Review
(Brazilian Chemical Soc, 2016-01-01)
Molecular orbitals play a crucial role in the understanding of the chemical reactivity at the atomic level and are important descriptors for the rationalization of various chemical reactions. In this context, the molecular ...