利用生活中的圆饼状蜡烛,使用最简单的方法,自制二氧化碳熄灭蜡烛的实验装置,自制大号漏斗,选择合适的反应容器,注意操作顺序,对教材中倾倒二氧化碳使蜡烛熄灭的实验进行改进,得到了更加显著的实验效果,激发学生在收集材料、设计实验和动手验证的过程中学习化学的热情,提高学生的实验操作能力,培养学生节约资源的意识。 Make use of the easiest way to make home-made candles to quench the candles. Make homemade large funnels, select the appropriate reaction vessels, pay attention to the sequence of operations, and improve on experiments that dump the carbon dioxide in the teaching materials to extinguish the candles , Got more significant experimental results, inspire students in the collection of materials, design experiments and hands-on verification of the enthusiasm for learning chemistry, improve students’ ability to experiment operation, training students to conserve awareness of resources.