蔗糖燃烧实验的创新改进

Improvement of Sucrose Burning Experiment

现行教材采用蔗糖和小苏打为原料进行"燃糖成蛇"实验,存在"蛇"生长长度较短和生长速率较慢等问题,降低了该实验的趣味性和可观赏性。在分析小苏打的作用基础上,系统探究了析氧物质替代小苏打进行"燃糖成蛇"实验的创新改进。结果表明,以高锰酸钾和氯酸钠混合物替代小苏打进行实验,"蛇"的长度和生长速率大大提高。改进后的实验,实验现象更加明显,趣味性、可观赏性和探究性增强。

The existing textbooks use sucrose and baking soda as raw materials for the experiment of "burning sugar to form snake", which has some problems such as short growth length and slow growth rate, reducing the interest and enjoyment of this experiment. Based on the analysis of the function of baking soda, the innovation and improvement of the experiment of "burning sugar to snake" by replacing baking soda with oxygen generation compounds were systematically explored. The results showed that the growth length and growth rate of the snake were greatly increased by burning sugar with potassium permanganate and sodium chlorate instead of baking soda. The improved experiment was more interesting, ornamental and exploratory, and with more obvious phenomena.