【摘要】 丁达尔效应是高中阶段常见的一个演示实验,人教版《高中化学》（必修一）对该实验的描述存在一定的缺陷:忽视了对浊液的讨论,采用激光笔作为光源,无法证明溶液、胶体、浊液三者中只有胶体有丁达尔效应。把CuSO₄溶液换做NaCl溶液或者酒精,把Fe（OH）₃胶体换做鸡蛋清,更有助于学生对溶液、胶体、浊液三者性质的认识。更多还原

【Abstract】 During the study of the senior high school, Tyndall effect is a common demonstration experiment, however in the version of "the senior high school chemistry"（required course）, the description of the experiment exist some defects: such as ignoring the discussion of turbid liquid and using laser-pen as a light source. Which will be unable to prove that among solution, colloid and emulsion, only colloid can leads to Tyndall effect. While taking CuSO₄ solution to replace of NaCl solution or Alcohol, and taking Fe（OH）₃ colloidal to replace of egg white, it will be more helpful to students’ understanding of the nature of the solution, colloid, emulsion.更多还原