按照现行高中课本第一册［实验4—7］的焰色反应方法，在课堂上演示时，既不便于教师操作，又不便干学生观察，且实验效果又不明显。我改用下列方法，在仪器使用、操作方法和实验效果上较之以前都有明显改善。1实验装置实验装置见附图。2实验操作（1）取两个三角架，上面各放一 In accordance with the flame reaction method in the current High School Textbook Volume 1 [Experiment 4-7], when presented in the classroom, it is not easy for teachers to operate, and it is not convenient for students to observe, and the experimental results are not obvious. I switched to using the following methods. The use of the instrument, the method of operation, and the effects of the experiment have been significantly improved. 1 Experimental apparatus The experimental apparatus is shown in the attached drawings. 2Experimental operation (1) Take two tripods and put one on each