一、改进目的制取蒸馏水实验是初中化学实验中的重点,在考试及课堂教学中许多教师与学生都感觉此类题难,经常“卡壳”。为此,我设计了一套更简易的装置,它既便于教师讲解,又便于学生实验,易于操作,实验效果良好。 First, the purpose of improvement Preparation of distilled water experiment is the focus of junior high school chemistry experiments, in the examination and classroom teaching many teachers and students feel such problems are difficult, often “card shell ”. To this end, I designed a more simple device, which is easy for teachers to explain, but also easy for students to experiment, easy to operate, experimental results.