HKDSE chemistry 5**化學影片 E2 Atomic World 24. Rutherford’s atomic model 25. Photoelectric effect 26. Bohr’s atomic model of hydrogen 27. Particles or waves e. Probing into nano scale 唔明?點撃預約$99試堂! 想下載dse試卷?Click here! 想睇埋Biology影片?Click here! 想睇埋Physics影片?Click here! 化學補習 生物補習 物理補習 化學練習 生物練習 物理練習