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Course: Science — Third Preparatory
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Science — Third Preparatory

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Unit 1 — Chemical Reactions and Their Environmental Impacts

Science — Third Preparatory

Unit 1 — Chemical Reactions and Their Environmental Impacts

🔍 In-Depth Explanations, Deductions & Multi-Book Insights:

🔍 In-Depth Explanations, Deductions & Multi-Book Insights:

  • ★ Comprehensive Study & Detailed Pedagogical Guide ★
  • Comprehensive Explanation Chemical Bonding, Valency and Classification of Compounds
  • Science (Preparatory Stage – 1st Prep) | Grade 7 (1st Prep) | 2026 / 2027 Official Curriculum | Unit 1: Chemical Reactions & Matter
  • 🎯 Targeted Learning Outcomes & Pedagogical Objectives:
  • • Classify elements into metals, non-metals, and noble gases based on electronic orbital occupancy.
  • • Trace cation and anion formation and explain the electrostatic origin of ionic bonding.
  • • Contrast single, double, and triple covalent bonds with molecular Lewis electron-dot models.
  • • Deduce chemical valency and write systematic chemical formulas of polyatomic ionic salts.
• Classify inorganic matter into four families→Acids, Alkalis/Bases, Oxides, and Salts.
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