颜色是物质的重要物理性质。依据物质颜色的不同,来定性地分析物质的组成是一种很重要而且简单易行的方法。在中学化学教学中,以沉淀、溶液及指示剂的颜色来鉴别、鉴定诸种物质尤属重要。鉴于中学物理光学部分已讲述了色彩的成 Color is an important physical property of matter. The qualitative analysis of the composition of matter is a very important and simple method based on the color of matter. In chemistry teaching in middle schools, it is particularly important to identify and identify various substances in the colors of sediments, solutions, and indicators. Whereas the physical optics section of secondary school has already described the