A problem about solubility equilibrium is presented as a resource for the evaluation of students. It involves macroscopic, microscopic, and symbolic levels of representation, and allows one to assess whether students have acquired an adequate conceptual understanding of the phenomenon. The problem, which starts with a figure using numbered particles, is useful for judging the relationships that students establish among the three levels. The difficulties students encounter while solving the problem are discussed.
More Information
Citation
Raviolo, Andrés. J. Chem. Educ.2001 78 629.
Keywords
CER Particulate Nature of Matter; Equilibrium; Problem-Based Learning; Teaching / Learning Aids
Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.