实验是化学研究的基本手段之一．在科学探究活动中，实验方案的设计与最佳方案的选择直接关系到实验效率的高低，甚至是实验的成败．一、实验设计与评价的含义实验设计是指在实施化学实验之前，根据实验目的和要求，运用相关化学知识和技能，利用现有的实验条件． Experiment is one of the basic means of chemical research. In scientific inquiry activities, the design of the experimental program and the selection of the best plan directly relate to the level of experimental efficiency, and even the success or failure of the experiment. First, the meaning of experimental design and evaluation Experimental design refers to the implementation of chemical experiments, according to experimental purposes and requirements, the use of relevant chemical knowledge and skills, the use of existing experimental conditions.