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一、归纳总结、对比分析,掌握常见仪器装置的用途在中学化学实验中,有不少实验都会使用到同一仪器.复习时,必须把使用同一仪器的多个实验放在一起,通过对比复习分析,理解其中的道理,就能够较好的掌握该种仪器的用途.例如,在测定硝酸钾在水中的溶解度实验、制取乙烯的实验、制取硝基苯的实验、石油分馏实验等都要用到温度计,但由于要测定温度的物质或环境不同,因此温度计水银球的位置也不同.把它们放在一起比较,可以提高复习效率.在一些实验过程要多次用到同一仪器或装置,由于该仪器或装置处于不同的实验阶段和位置,其作用也有所差异.复习
First, the induction summary, comparative analysis, master the use of common equipment In chemical experiments in high school, there are many experiments will use the same instrument.Review, you must use the same instrument multiple experiments together, through the comparison review and analysis , Understand the truth, you can better grasp the purpose of this instrument.For example, in the determination of potassium nitrate solubility in water experiments, the preparation of ethylene experiments, the preparation of nitrobenzene experiments, oil fractionation experiments should Thermometer used, but due to the temperature of the substance or the environment to be different, so the thermometer mercury ball position is also different, put them together, can improve the efficiency of the review in some experiments to use the same instrument or device multiple times, Since the instrument or device is at a different experimental stage and location, its role is different.