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加热与物质的结构、性质和化学反应密切相关,可使物质发生三态变化,可改变物质的溶解度和溶解速度,可改变沉淀物的颗粒大小,可使某些物质发生分解反应,可改变化学反应的速率和可逆反应进行的方向,改变化学反应进行的形式等等,在物质制备的实验中,加热的先后顺序不同,实验的结果也大不相同。
Heating and material structure, properties and chemical reactions are closely related to the material can occur tri-state changes can change the material solubility and dissolution rate can change the particle size of sediment, can make some material decomposition reaction can change the chemistry The rate of reaction and the direction of reversible reaction to change the form of chemical reactions, etc., in the preparation of the material experiment, the order of heating is different, the results of the experiment are also very different.