初中化学是九年义务教育必修的一门基础课程。根据《九年义务教育全日制初级中学化学课程标准(实验稿)》,其中要求学生具备的能力之一就是初步的观察、实验能力:能有目的地观察,辩明观察对象的主要特征及其变化条件,能了解实验目的,会正确使用仪器,会作必要的记录,会根据实验结果得出结论, Junior high school chemistry is compulsory basic compulsory education for a nine-year course. According to “nine-year compulsory education full-time junior high school chemistry curriculum standards (experimental draft)”, which requires one of the students have the ability to observe and experiment is the ability: to observe purposefully, to identify the main features of the observed object and its changes Conditions, to understand the purpose of the experiment, the correct use of equipment, will make the necessary records will be concluded based on experimental results,