Philately and Teaching of Chemistry: an Example Using the Ideal Gas
AbstractThis article presented fifty-seven postage stamps issued by different countries to do one description didactics of the ideal gases: begins with examples of gaseous matter (air, natural gas, carbon dioxide, fluorine, oxygen, ozone, etc.), we continue with a development historical of the gases (Paracelsus, Helmont, Cavendish, Priestley and Lavoisier). The disciplinary aspects with the variables and units of the equation of state (pressure, temperature, volume and amount of substance); finally, relate with postage stamps the laws (Boyle, Charles, Gay-Lussac and Avogadro) and the molecular kinetic theory of gases (van der Waals, Joule, Maxwell, Boltzmann and Gibbs). Keyword: ideal gas, teaching of Chemistry, philately, postage stamp.
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