Conceptions of new students at the course of degree in Chemistry about any solutions concepts

• Autor(a) principal: Santos, Luzia Rejane Lisboa
• Data de Publicação: 2017
• Outros Autores: Lima, João Paulo Mendonça, Sarmento, Victor Hugo Vitorino
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ensino de Ciências e Matemática - REnCiMa
• Texto Completo: https://revistapos.cruzeirodosul.edu.br/rencima/article/view/1239
• topic: Concepções; Soluções; Níveis explicativos; Conceptions; Solutions; Explanatory levels

Chemistry is a science that surrounds on three levels of knowledge: the macroscopic level, the microscopic and the symbolic. For effective learning, it is necessary that the chemistry teaching transits through these levels. However, previous studies have shown that chemistry students know only between the macroscopic and the symbolic, having a lack of understanding at the atomic-molecular level, causing a gap for effective learning chemistry. In this work sought to identify the conceptions of freshmen the Chemistry degree course about the concept of solutions, prioritizing the qualitative aspect and the process of mixtures formation at microscopic level, having a theoretical approach in the analysis of mental representations of the students and expanding the discussion about learning in chemistry. Data were collected from a questionnaire and interviews, and analyzed through analysis of content by categories. The results showed a lack of understanding of the atomic-molecular level concepts, assigned to the pre-knowledge acquired in high school, which prioritizes a quantitative education with a macroscopic approach to science.