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小气球是生活中经常见到并触及的普通玩具,它具有优良的收缩性能,而且价格便宜,若将它应用到化学实验中,不仅使化学实验简单易行.安全又环保,效果明显,而且具有创新性.基于上述原因,小气球在化学实验中的作用显得倍受亲睐,围绕小气球的大量化学试题便随之接踵而来.一、收集生成物如图1所示,在锥形瓶底部铺上一层细沙,并放上一小块白磷,橡皮塞上安装一根玻璃管,并在上端系一个小气球,下端与白磷接触,实验时烧红玻璃管,并且迅速插入锥形瓶,引燃白磷,实验前后称量整个装置质量,可用于验证质量守恒定律.
Small balloon is commonly seen and touched in life, ordinary toys, it has excellent shrinkage, but also cheap, if it is applied to chemical experiments, not only simple and easy chemical experiments. Safety and environmental protection, the effect is obvious, and For the above reasons, the role of small balloons in chemistry experiments are much more pro-Lai, a large number of chemical questions around the balloon will follow.One, the collection of artifacts shown in Figure 1, in the tapered The bottom of the bottle covered with a layer of fine sand, and put a small piece of white phosphorus, rubber plug installed a glass tube, and the Department of a small balloon at the bottom of the contact with white phosphorus, the experiment burned red glass, and quickly inserted into the cone Shaped flask, ignited white phosphorus, before and after the experiment weighing the entire device quality, can be used to verify the law of conservation of mass.