Скачать с ютуб Integrated science egypt first secondary . First lesson part 1 . aquatic ecosystem в хорошем качестве

Integrated science egypt first secondary . First lesson part 1 . aquatic ecosystem

منهج العلوم المتكاملة لغات اولى ثانوي مصر Integrated science first secondary egypt Combined science first secondary egypt شرح الدرس الأول في منهج العلوم المتكاملة اولى ثانوي aquatic ecosystem Water ecosystem Properties of water 1 polarity and electronegativity Hydrogen bond and boiling point of water 2 Electrolysis 3 Power of hydrogen. PH Hydrosphere Biosphere Cryosphere Atmosphere Water cycle Hydrological cycle Atomic structure of water Chemistry of water Covalent bond between oxygen and hydrogen in water molecule Mass percentage of oxygen versus hydrogen in water molecule Why Boiling point of water is 100 while that of hydrogen sulphide is - 61 H2O versus H2S