"serpentes de faraó": a história de uma brincadeira pirotécnica e sua aplicabilidade no ensino de princípios químicos básicos
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ID: 174979
2014
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Abstract
Fun methodologies developed with alternative materials for teaching chemical reactions of carbon are interesting activities for discussing concepts of stoichiometry and thermochemistry. The decomposition of organic matter, CO2 production and coal formation can be demonstrated in the experiment "Pharaoh´s snake". This experiment is attractive since the simple combustion of sucrose generates a peculiar structure of coal. This paper proposes a simple methodology for making the sugar tablets used in the experiment and contextualizes the experimental observations with the chemical reaction of carbon which leads to coal and to the thermodynamics involving combustion processes.
| Reference Key |
ullmann2014qumica"serpentes
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|---|---|
| Authors | ;Marcius A. Ullmann;Wilhelm M. Wallau;Daniela Bianchini;Andressa da C. Schneid;Lara M. P. Montenegro |
| Journal | greece and rome |
| Year | 2014 |
| DOI |
10.5935/0100-4042.20140176
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| URL | |
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