Abstract
The contextualization of chemistry is of great importance to our society as it allows to bring this science to students of secondary education thus facilitating the learning process, so that students can identify and explain the phenomena that occur around. As a way to improve student learning, driven redox processes are contextualized through the process of corrosion of metals, which can place them in real contexts, for which there were two experiences, one on corrosion reactions that occur over an extended time due to constant contact of the coins one hundred Chilean pesos, the old and current human sweat by verifying which of the two alloys are most affected. The other experience is to determine qualitatively the degree of corrosion experienced by coins of the same value mentioned above, through two media, a dry and moist soil, respectively. Both activities were used with chemical reagents readily available.
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