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海波与蜡的熔化对比实验是人教版八年级上册第四章第2节的一个重点实验,也是整个初中热学的一个重点实验,该实验采用水浴加热法,实验图如图 1所示.该实验的成功与否直接影响到学生对晶体、非晶体概念的建立,对晶体与非晶体熔化过程的不同特点、规律的认识,是这节课的关键所在.这个实验容易出现的问题首先是熔化时间太短,如果不注意实验的细节,海波的
The contrast experiment of the fusion of sea wave and wax is a key experiment in Chapter 4 of Chapter 4 of the eighth grade of the People’s Education Press. It is also a key experiment of the entire junior middle school. This experiment adopts the water bath heating method. The experimental chart is shown in Figure 1. The success of this experiment directly affects the student’s establishment of concepts of crystals and non-crystals. The understanding of the different characteristics and laws of crystal and amorphous melting processes is the key to this lesson. The first problem that this experiment is easy to find is Melting time is too short, if you do not pay attention to the details of the experiment, Hypo