9Th Class Chemistry New Book 2025 || Lecture 1 || Chapter 5, Energetics
Energetics, system and sorroundings, Enthalpy National curriculum of pakistan 2023 This video is about first lecture of chemistry new book 2025 and unit 5 of all punjab boards for 2025 and onwards. Fifth chapter of new chemistry book is about chemical energy, heat energy, exothermic reaction and endothermic reactions, system and surroundings, enthalpy and how does a reaction takes placeaerobic and anaerobic respiration. #9thchemistrynew
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Exothermic and Endothermic Reactions | Chapter No.5 | Energetics | Chemistry 9th Class New Book 2025
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