有序是对一切实践活动的基本要求。由于化学实验都是按照一定的化学原理设计、按照一定的规范操作和按照一定目的进行的实验活动，因此必须做到有序。在化学实验教学中坚持“有序性”原则，保证实验设计的合理性、操作的科学性、结论的可靠性、观察的系统性、表达的条理性，从? Order is the basic requirement for all practical activities. Since chemical experiments are all designed according to certain chemical principles, operated according to certain norms and experimental activities conducted according to certain purposes, they must be ordered. In the teaching of chemistry experiments, we adhere to the principle of “orderliness” to ensure the rationality of experimental design, the scientificity of operations, the reliability of conclusions, the systematicness of observation, and the clarity of expression.