Article,
Milk Fraud: Investigative Experiment for Chemistry Teaching
REVISTA VIRTUAL DE QUIMICA, 11 (3): 1024-1043 (2019)
DOI: 10.21577/1984-6835.20190069
Abstract
In Basic Education, Chemistry contents are considered unattractive by
students, who do not even understand chemical phenomena and are unable
to associate them with everyday life. In this aspect, the present work
aims to research and contextualize experiments as a didactic tool for
learning of chemical concepts like density, catalysts, oxidation number,
organic functions and chemical reactions to determine adulteration in
milk. The research was carried out at the Chemistry Laboratory of the
Seara of Science of the Federal University of Ceara (Fortaleza-CE) with
high school students. We observed that all students were able to
identify adulterations in the milk samples, achieving very satisfactory
results. The experiments helped and motivated students in the
understanding of chemical concepts, relating them to the reality of the
students in their surroundings, from the macroscopic visualization of
the chemical knowledge.
