Experiments To Illustrate the Chemistry and Bouncing Ability of Fresh and Spent Zinc–Manganese Oxide Alkaline Batteries

• Johnathon M. Hall ^[1] ; John R. Amend ^[2] ; Thomas S. Kuntzleman ^[1]
  1. [1] Spring Arbor University

     Spring Arbor University

     Township of Spring Arbor, Estados Unidos

     
  2. [2] Montana State University

     Montana State University

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 93, Nº 4, 2016, págs. 676-680
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Why do dead batteries bounce considerably higher than fresh batteries? This phenomenon has a chemical explanation that can be used to teach students about the chemistry of alkaline Zn/MnO2 cells. Batteries discharged to various extents can be tested for bounciness and conversion of Zn to ZnO. These measurements allow students to connect the chemistry that powers these batteries with the increased bouncing effect. The experiments can be presented as a teacher-led demonstration or hands-on laboratory for students.