[科学探究3-3]用食醋除去水垢1实验分析①本实验的目的是探究醋酸的酸性,设计实验比较醋酸与碳酸的酸性强弱。醋酸与水垢(主要成分为碳酸钙)反应可以制得二氧化碳,由此可以说明醋酸的酸性强于碳酸。②教师可引导学生根据已有知识经验,选用易得实验材料和实验方法,从气体的产生 [Scientific inquiry 3-3] to remove scale with vinegar 1 Experimental Analysis ① The purpose of this experiment is to explore the acidity of acetic acid, acetic acid and carbon acid compared with the design of acid strength. Acetic acid and scale (the main component of calcium carbonate) reaction can be made of carbon dioxide, which shows that acetic acid is more acidic than carbonic acid. ② teachers can guide students based on existing knowledge and experience, the use of readily available experimental materials and experimental methods, from the gas generation