蜡烛燃烧产物检验实验的改进

Improved Experiment of Testing Product of Candle Burning

用透明的圆柱形去底塑料瓶、90°弯尾球形干燥管、铁架台等组装实验装置改进了蜡烛燃烧产物检验的实验，可以很快看到塑料瓶内壁空干燥管内有水雾、石灰水变浑浊，说明蜡烛燃烧的产物有水和二氧化碳。

This paper improved the experimental operation methods of testing product of candle burning, using a transparent cylindrical plastic bottle without a bottom, 90 degrees spherical drying tube with curved tail pipe, etc. Obvious experimental phenomena could be observed： Water mist appeared quickly on the plastic bottle wall and in the empty drying pipe, and lime water became turbid, which illustrated the products of candle burning were water and carbon dioxide.