Abstract Covalent bond theory is the core of chemistry. This paper analyzes the development history of covalent bond from the perspective of cognition, the formation and development of covalent bond theory can be divided into four stages, the phenomenon of phase: preliminary understanding of the way of material combination; characterization of phase: explore the particle bonding process; nature of phase: reveal the essence of covalent bond formation; development phase: explain the structure and properties of matter. The development stage of covalent bond history is in line with the arrangement of teaching materials, combine with students' cognitive development. It has the following educational values: (1) embody the thought and method of subject;(2) continue to develop students' cognitive advancement; (3) to promote the formation of students' literacy.
LIU Yu-Rong, CHENG Ying-Di, DOU Meng-Xue. History of Covalent Bond Theory and Its Educational[J]. Chinese Journal of Chemical Education, 2023, 44(7): 119-124.
