Students' Difficulties With Causal Mechanisms In Chemistry: Explanations On The Mpemba Effect
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Abstract
This study describes the analysis of the explanations given by students of a teacher training program on the effect of Mpemba. The experience was presented in three moments (before, during and after), with the participation of 37 students of the 8th semester of the Natural Sciences Degree program of a Colombian university. It was observed that students answers to why and not to how the phenomenon occurs and associate their answers with concepts such as heat flow, molecular kinetics and change of state of the material. The above highlights the need to practice of reasoning on causal mechanisms in chemistry, an aspect that can help students understand molecular interactions.
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