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The present work was carried out by students of the Full Degree Course in Chemistry at the Federal Institute of Pernambuco, Vitória de Santos Antão Campus, members of the Pedagogical Residency program. The qualitative study will address a demonstrative-investigative experimental activity with students from the 1st year of High School at the Escola de Referência Guiomar Krause Gonçalves, located in the city of Vitória de Santo Antão-PE. Based on this initiative, the study sought to enable the understanding of the theme of the Molecular Kinetic Model, highlighting the content of chemical transformations, thus relating to everyday phenomena. In objective, we tried to analyze this experimental approach as a strategy that facilitates and facilitates the treatment of chemical contents in the classroom, in addition, it was proposed to investigate the activity referred to as a teaching tool for future teachers in chemistry. For the evaluation process during the actions, two tables were used, which contained six equal questions for both, so that a comparative analysis of the students' responses was then made in the pre and post basis of the content covered and the practice performed. This evaluation method, used as Representational Expression, served to qualitatively measure the results, in order to clarify the difficulties and potentialities observed during and after the activity. With Brazilian Journal of Development Braz. J. of Develop., Curitiba, v. 6, n.6, p. 35255-35269 jun. 2020. ISSN 2525-8761 35257 the work carried out it was possible to conclude that the practice used was relevant and accepted by the students, so that, it made it easier to apprehend the content in question, in addition to attributing to the undergraduates the experimentation as an effective resource in the classroom.

Abordagem experimental: construção do conhecimento científico acerca do conteúdo de modelo cinético químico molecular