ISSN 0187-893X       ISSNE 1870-8404
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Guide authors of the current issue Volumen XXVIII, Número 3, June de 2017 Volumen XXVIII, Número 2, April de 2017 Volumen XXVIII, Número 1, January de 2017 Volumen XXVII, Número 4, October de 2016
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Number 4,
2017-10-01


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Recent Issue:

Volume XXVIII

Number 4

2017-10-01

CONTENT

CONTENT

   

COVER OF THIS ISSUE OF THE JOURNAL

COVER OF THIS ISSUE OF THE JOURNAL

   

DIRECTORY

DIRECTORY

   

EDITORIAL

EDITORIAL

   

REFLECTIONS

The paradigms of Chemical Engineering: The new frontiers

Reynerio Álvarez-Borroto, Ullrich Stahl, Elvia V. Cabrera Maldonado , Marco V. Rosero-Espín   
[+]
James Wei, a professor at the Department of Chemical Engineering-MIT, used the paradigm concept in 1988, introduced by T. Kuhn, to characterize the steps of evolution of the Chemical Engineering.

REFLECTIONS

The fourth chemical revolution (1945-1966). From substances to chemical species

José Antonio Chamizo   
[+]
With educational purposes, a new chronology is introduced to address the history of chemistry around five revolutionary moments, analysing in this article only the fourth of them. Each revolution is considered in terms of the Kuhnian notion of ‘exemplar’ rather than paradigm.

REFLECTIONS

Acid-base theory in the twentieth century and a reflexive review the scientific work

Felipe de Moura Souza, Eliana Maria Aricó   
[+]
The paper presents a new reading on the construction of acid-base theory in the twentieth century, more specifically the participation of S.A. Arrhenius, J.N. Bronsted, T.M. Lowry and G.N. Lewis.

REFLECTIONS

Remembering qualitative analysis. The 175th Anniversary of Fresenius’ Textbook: Part I

William B. Jensen   
[+]
Part I of this two-part article on the history of the teaching of qualitative analysis to undergraduate chemistry majors covers the origins of the course

REFLECTIONS

Remembering qualitative analysis. The 175th anniversary of Fresenius’ textbook: Part II

William B. Jensen   
[+]
Part II of this two-part article on the history of the teaching of qualitative analysis covers the hydrogen sulfide problem, the debates over why and how qualitative analysis should be taught to undergraduate chemistry majors, and comments on its eventual demise.

REFLECTIONS

The alkyl group is a -I+R substituent

Luis Salvatella   
[+]
The alkyl group has been usually regarded as a ó-electron donorsubstituent(+Ieffect,accordingtotheIngold’sclassification).

From the laboratory to the court: Teaching science to forensic science students

Ana María Sosa Reyes   
[+]
Training professionals with an interdisciplinary profile such as forensic scientist is an educational challenge which involves rethinking didactic principles from more clearly defined scientific disciplines, such as chemistry.

Set of proposals using natural products to introduce the acid-base theme in High School (Part I)

Renata de Cássia Martins, Fabiele Bernardi, Yohanne Dangui Kreve, Keller Paulo Nicolini, Jaqueline Nicolini   
[+]
Experimentation in chemistry is fundamental in order to create concepts that allow the students to understand the world, thus facilitating the teaching and learning processes

Colored iron compounds: an experimental proposal using low cost materials

Simone Garcia de Ávila, Jivaldo do Rosário Matos   
[+]
Experimental activities play an important role in the teaching and learning process in chemistry, because it motivates students and promotes the correlation between the activities in the classroom and everyday situations.

The Organic Chemistry laboratory: A propose to the promotion of scientific technological competences

Liliana Viera, Silvia Ramírez, Ana Fleisner   
[+]
From different spaces it has been stated that the training in competences would seem to be the challenge of High Education.

Construction of a low cost potentiostat for steel corrosion inhibition studies: Determination of corrosion potential and chronoamperometric measurements

   
[+]
Knowledge integration is the central duty of chemistry education and is in this context where the investigation surrounding steel corrosion inhibition bring us the opportunity to integrate knowledge from electrochemical kinetics, Organic chemistry

EDUCATIONAL RESEARCH

Coherence and congruence in the representations used by university students about the states of aggregation

Osvaldo M. Cappannini, Carlos R. Espíndola   
[+]
We can find an extensive list of research articles aimed to identify structure of matter representations in people belonging to several levels in the educative system.

EDUCATIONAL RESEARCH

Chemical Bonds in chemistry textbooks: an analysis of the elements of discursive genres

João Rufino de Freitas Filho, Sírio Pereira da Silva, Cleiton Luiz da Silva Souza, Ladjane Pereira da Silva Rufino de Freitas, Juliano Carlo Rufino de Freitas, Jucleiton José Rufino de Freitasa   282-294
[+]
Using the ideas of Bakhtin and inserting them in the broader frame of discursive studies, this paper analyzes the elements of discursive genres found in chemistry textbooks texts.

EDUCATIONAL RESEARCH

Instructive experiment addressing the importance of the methodological validation in the study of the sulfate chemical in the environment

Marcielly Freitas Bezerra de Lima, Lucas Soares Patrício, Francisco Jailton Nogueira Silva Filho, Rivelino Martins Cavalcante   295-301
[+]
This instructive experiment aims to show the importance of validation on analytical method in the study of sulfate chemistry in the environment

LETTER TO THE EDITOR

Letter to the Editor

   302-303

REPLY TO LETTER TO THE EDITOR

REPLY TO LETTER TO THE EDITOR

   304-306

ERRATUM PAGE

Erratum

Paola R. Duque Vega, Jesús Gracia Fadrique   307
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