高一第二学期第七章的《7.1电解质的电离》第一课时中主要通过硝酸钾、氢氧化钠、蔗糖等固体及水溶液的导电性实验,经过比较、分析、归纳得出电解质和非电解质的概念,理解电解质导电的条件和原因。本节课的重点实验是各类物质水溶液中或熔化状态时的导电性实验。而本实验装置为硝酸钾固 In the seventh chapter of the second semester of the first grade, “7.1 Electrolyte Ionization” was mainly conducted through the conductivity experiments of solid and aqueous solutions such as potassium nitrate, sodium hydroxide and sucrose in the first lesson. After comparison, analysis and induction, electrolytes and non-electrolytes were obtained. The concept understands the conditions and causes of electrolyte conduction. The key experiment in this lesson is the conductivity experiment in the aqueous solution or in the molten state of various substances. The experimental device is potassium nitrate.