Four Display Experiments Developed and Demonstrated in the Lecture of the Chemistry. The Combustion of Cellulose Nitrate, The Convenient Performance of the Continuous Flame Reaction, The Automatic Rainbow Color Change, and The Alternate Generation of the Precipitate of Different Color

摘要

Four display experiments for the university students,“The Combustion of Cellulose Nitrate”，“The Convenient Performance of the Continuous Flame Reaction”， “The Automatic Rainbow Color Change by Using S_N1 or E1 Reactions”， and “The Alternate Generation of the Precipitate of Different Color”， were developed and demonstrated in the lecture of the chemistry. These experiments would concentrate the students to the lecture, and raise their understanding in the contents of the lecture. The demonstration of the experiments would also attract attention of the students before entering the university, and arouse them the strong interest in the chemistry. The disposal methods after the demonstration were also described.