Abstract The development of scientific thinking is inseparable from experimental activities. The example of “Carbon Allotropes (Lesson 1)” presents a practical process of experimental teaching that focuses on scientific thinking. Through the improvement and addition of simple and easy-to-use experiments, students are guided to use scientific methods such as comparison, analysis and induction to understand the adsorption properties of common carbon monomers and activated carbon from the perspective of macroscopic and microscopic connections, to obtain sufficient factual evidence from a multi-dimensional perspective, to reason to get the corresponding conclusions, to form the ability of empirical reasoning, and to achieve the development of scientific thinking.