论文部分内容阅读
碳酸钠和碳酸氢钠是初中化学教材中出现的两种常见的盐,同时也是日常生活中有重要应用的物质,更是学习高中化学必修一第三章《金属及其化合物》的重要基础,也是高中学业水平测试的重点内容,那么,如何让学生准确快速掌握它们的性质是教学的关键。下面仅从碳酸钠和碳酸氢钠溶解性这一性质的比较实验进行改进并阐述自己的观点。针对人教版《化学1》教材中碳酸钠和碳酸氢钠的溶解性比较的实验现象不够明显,本文对此实验方
Sodium carbonate and sodium bicarbonate are two common salts in junior high school chemistry textbooks, and are also important materials used in daily life. They are also the important basis for learning the third chapter of “Chemistry of Chemistry in High School”, “Metal and its compounds” Is also the key content of the high school academic level test, then, how to let the students accurately and quickly grasp the nature of their teaching is the key. The following only from the nature of sodium carbonate and sodium bicarbonate to compare the nature of the experiment to improve and set out their own point of view. For the experimental version of “Chemistry 1” teaching materials, sodium carbonate and sodium bicarbonate solubility comparison of the experimental phenomenon is not obvious enough, this experimental side