HKDSE chemistry 5**化學影片 Topic 1 Heat and gases 1. Temperature, heat and internal energy 2. Transfer processes 3. Change of state 4. Gases 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