以往中学化学教材中的演示实验,大都是为增加学生的感性认识,提高学生的理解能力而设置的。其实,中学化学教材中有许多内容,与当地的工农业生产实际是有密切联系的。下面就我们近几年对化学如何为当地经济建设服务的实践内容,摘其一部分作简要介绍。从芳香植物中提取芳香油“蒸馏”是初中化学的基本操作之一。只要将其装置稍作改进,即可应用水蒸汽蒸馏 In the past, demonstration experiments in middle school chemistry textbooks were mostly set up to increase students’ perceptual knowledge and improve their understanding. In fact, there are many contents in the middle school chemistry textbooks, which are closely related to the actual industrial and agricultural production in the region. The following is a brief introduction to the practical content of how we serve the local economy in recent years. Extracting aromatic oils from aromatic plants “Distillation” is one of the basic operations of junior high school chemistry. As long as the device is slightly improved, steam distillation can be applied