1. School of Teacher Education, Nanjing Normal University, Nanjing 210097, China; 2. School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China; 3. Nanjing Senior High School of Jiangsu Province, Wuxi 214400, China
Abstract The Periodic Table is an important tool for students to study chemistry issues. In addition to the periodic table provided by the textbooks, various online periodic tables have the potential to enhance students’ understanding of chemical elements and the basic concepts of chemistry. This article summarized the sources of various forms of online periodic tables and introduced their websites to provide resources for teaching. At the same time, for the periodic table providing a large amount of physical and chemical data, the Handbook of Chemistry and Physics is used as a standard to evaluate the data of four elements carbon, oxygen, iron and chlorine which are often found in the textbook, and provides effective reference for users.
