Analysis of Chemistry Olympiad Preliminary Contest for Beijing Senior High School Students in 2019
ZHENG Tao1, MEN Yi2,3*, TAN Hong-Wei2,3, XING Guo-Wen2,3, GUO Shuai4, LI Hui-Feng2,3
1. Beijing National Day School,Beijing 100039,China;
2.College of Chemistry,Beijing Normal University,Beijing 100875,China;
3. Beijing Chemical Society,Beijing 100875,China;
4. Changping No.2 High School of Beijing,Beijing 102208,China
