Abstract Traditional experimental methods are difficult to judge whether dry ice can react with sodium hydroxide solution, and can not show its reaction process. The reaction between dry ice and sodium hydroxide solution can be judged through the experiment of verifying the product, and the reaction without obvious phenomenon can be successfully transformed into obvious phenomenon reaction. The digital experiment of handheld technology is used to convert the “invisible” chemical experiment phenomenon into “observable” data and curve images, and explore the relationship between the reaction product and the concentration of sodium hydroxide solution, so as to realize the in-depth learning of the chemical properties of carbon dioxide.
LIU Qing-Feng. Teaching Practice of Deep Learning of Chemistry in Junior High School: Exploring the Chemical Properties of Carbon Dioxide with Dry Ice[J]. Chinese Journal of Chemical Education, 2022, 43(9): 52-57.
