Out of "Thin Air":: Exploring Phase Changes

• John J. Vollmer ^[1]
  1. [1] Mills College

     Mills College

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 77, Nº 4 (April), 2000, págs. 488-488
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Most students easily understand melting, vaporization, boiling, condensation, and freezing based on their daily experiences with water. The conversion of a solid directly to a gas, sublimation, and the conversion of gas to solid, deposition, may be more difficult to grasp because they are unfamiliar. Seeing these phase changes alongside evaporation and condensation may help students to better understand these processes. This Activity illustrates sublimation/deposition with para-dichlorobenzene (mothballs) and evaporation/condensation with water.