一、问题提出石蜡油分解实验是人教版《化学2》第三章第二节中的教师演示实验,其原理是在高温条件下将石蜡油加热分解产生乙烯等气体,进而探究乙烯的性质。其目的是通过实验使学生了解到乙烯来自于石油,更重要的是为学生学习乙烯的性质建立感性认识。此实验在学生学习乙烯性质的过程中起着举足轻重的作用,但由于此 First, the problem proposed Paraffin oil decomposition experiment is the PEP teaching “Chemistry 2” Chapter III of the second teacher demonstration experiment, the principle is under high temperature heating paraffin oil decomposition of ethylene and other gases, and then explore the nature of ethylene . The purpose of this experiment is to make students understand that ethylene is derived from petroleum, and more importantly, to establish perceptual knowledge for students to learn the nature of ethylene. This experiment plays a decisive role in students’ learning of the properties of ethylene, but because of this