Cromatografia em papel, giz e coluna: um instrumento para o ensino de polaridade e solubilidade no 3º ano do Ensino Médio

Abstract

The teaching of Chemistry in High School has a fundamental role for the student to understand its nature and its transformations, and how experimental activities can be a method capable of supplying as a means of communication. With this method, the chromatography experiments, object of research, were developed in the laboratory as one of the main components for the knowledge of polarity and solubility contents from an experimental series such as paper, chalk and column chromatography. The contents of polarity and solubility are of extreme importance for the discipline, since the knowledge has several knowledge that involves the understanding of several other subjects involved in the classroom and also situations experienced in the students' daily life. The present work deals with a qualitative approach with an exploratory and descriptive field research, with a contribution of authors such as Santos and Schnetzler (1996), Gil (2008), Atkins and Jones (2012), Monezi and Almeida Filho (2005). The final research in fourth moments: 1st and 2nd expositive and dialogic classes; 3rd class with experiments in laboratories with alternative materials and 4th evaluation of learning. The results obtained by this research were satisfactory and carry the good results, proving the theory and practice of learning