Unit 06 Chemical Reactions | One Shot Lecture | Class 8 Science | New Balochistan Board

This video is a comprehensive one-shot lecture on Chemical Reactions for Class 8 Science students, following the New Balochistan Board syllabus. It covers the following key concepts: Physical vs. Chemical Changes: Explains that physical changes are temporary and reversible (0:28-1:40), while chemical changes are permanent and result in new substance formation (1:40-3:09). Chemical Reactions & Equations: Defines reactants and products (3:10-4:30) and teaches the trial-and-error method to balance chemical equations (10:39-16:20), emphasizing the Law of Conservation of Mass (6:20-8:52). Types of Reactions: Categorizes reactions into: Combination/Addition (16:26-17:40) Single Displacement (17:40-19:17) Double Displacement (19:17-21:12) Combustion (21:12-22:24) Energy Changes: Distinguishes between Exothermic (heat-releasing) and Endothermic (heat-absorbing) reactions, illustrating their importance in daily life and biological processes like respiration and photosynthesis (22:26-32:52). Chemical Bonding: Explains how atoms bond to achieve stability using the octet/duplet rules. It details Ionic Bonds (complete electron transfer) and Covalent Bonds (mutual electron sharing), supported by dot and cross diagrams (32:52-50:28).Class 8 Science Students New Balochistan Board / BBISE 2026 New Syllabus ✅ Easy explanation ✅ Important exam points ✅ One-shot complete revision ✅ Useful for preparation and revision Subscribe to M Farukh for Class 8, 9, 10 Science, Chemistry, Physics and Pharmacy lectures. #Class8Science #ChemicalReactions #BalochistanBoard #Unit06 #OneShotLecture #BBISE #Class8 #ScienceLecture #ChemicalReaction #NewSyllabus