Exercises : 31. Typical reactions of selected homologous series #dse #dsechem #dsebio #dsephy #dsefighter #2020dse #2021dse #2022dse #chem #ๅๅญธ #chemistry #bio #็็ฉ #biology #Phy #็ฉ็ #physics #hkdse https://dse.video https://www.instagram.com/p/B-YkMw4h4Vc/?igshid=p4m7yswzem95















