AP CHEMISTRY RESCUE 301 : Rescue Your LDFs ; London Dispersion Forces Exam Review

Welcome to Unit 3: Intermolecular Forces and Properties of the AP Chemistry Exam Rescue 2025 Plan! That is good also for any exam that you are asked for LDFs , Chemistry Is chemistry whatever your school or exam is .In this video, you’ll finally understand London Dispersion Forces (LDFs) — the most misunderstood intermolecular force on the AP exam. ✅ You’ll learn how to: • Explain what causes LDFs (temporary dipoles & induced dipoles). • Compare molecules based on electron count and polarizability. • Use surface area to explain why straight-chain molecules have stronger dispersion forces than branched ones. • Apply LDFs to boiling point and melting point trends across halogens and hydrocarbons. • Write AP-ready phrases like: “more electrons → greater polarizability → stronger London Dispersion Forces.” 📂 Don’t forget: this video comes with a Homework PDF + Answer Key to test your skills. 👉 Download here: Homework_Unit3_Topic1_LDFs.pdf 🎯 AP Exam Tip (end of video): On FRQs, always begin with: “London Dispersion Forces are present in all molecules.” Then compare strength based on electrons, surface area, or polarizability. That’s exactly how graders award points! 🔔 Next video → Dipole–Dipole Forces: Why Polarity Changes Everything #APChemistry #APChem2025 #Unit3 #ExamRescue #Chemistry ⸻ 📂 Files Included • Homework_Unit3_Topic1_LDFs.pdf (practice problems + answer key) • PVF_Unit3_Topic1_LDFs.pdf (printable visual file: diagrams of temporary dipoles, halogen phase states, hydrocarbon shape comparisons) Answer Key Provided? ✅ AP Rubric Tips Given? ✅