化学离不开实验,实验的基本操作在做好化学实验和学好化学知识中具有重要作用。而加热是中学化学实验中常用的实验基本操作之一,因此,笔者特将化学实验中常用的加热操作进行了初步总结,供广大同仁及同学们参考。一、直接加热法化学实验中直接给液体加热可以用试管、烧杯、烧瓶和蒸发皿;给固体加热可以用干燥的试管、蒸发皿和坩埚。加热时应注意:如果被加热的容器外壁有水,必须在加热前擦拭干净,以免容器受热时炸裂。另外,加热的时候,不要使容器的底部跟灯 Chemistry is inseparable from experiments, and the basic operation of experiments plays an important role in doing chemical experiments and learning chemistry knowledge. Heating is one of the basic experimental operations commonly used in middle school chemistry experiments. Therefore, the author made a preliminary summary of the heating operations commonly used in chemistry experiments for reference by colleagues and students. First, direct heating chemical experiment directly to the liquid heating can use test tubes, beakers, flasks and evaporating dishes; heating solids can use dry test tubes, evaporating dishes and enamel. When heating, it should be noted that if there is water on the outer wall of the heated container, it must be wiped clean before heating to prevent the container from bursting when it is heated. In addition, when heating, do not make the bottom of the container with the light