初中化学教材中铁钉锈蚀实验的数字化改进

针对沪教版九年级化学上册教材中的“铁钉锈蚀实验”存在反应时间长、课堂操作难、可视化程度低、控制变量难等问题,结合数字化传感技术对该实验进行一系列的探究与改进,设计了2组对比实验,通过定量测定还原铁粉在生锈过程中的耗氧量,探究钢铁锈蚀的条件以及影响钢铁锈蚀速率的因素.

Digital Improvement of Nail Corrosion Experiment in Junior High School Chemistry Textbook

The "nail corrosion experiment" in the ninth grade chemistry textbook of Shanghai Education edition has some problems such as long reaction time, difficult classroom operation, low visibility, difficult control variables.Combined with digital sensing technology, a series of explorations and improvements were carried out on the experiment, and two groups of comparative experiments were designed to quantitatively determine the oxygen consumption of reduced iron powder in the process of rust, to explore the conditions of iron and steel corrosion and the factors that affect the corrosion rate of iron and steel.