8.5 Molecular Polarity | High School Chemistry

In this lesson Chad introduces the concept of electronegativity and reveals the trend for electronegativity on the period table. He then shows how to distinguish between nonpolar and polar covalent bonds based upon differences in electronegativity. Chad then demonstrates how to use bond polarity and molecular geometry to determine whether a molecule is polar or nonpolar overall. He demonstrates this with several examples including CO2, COS, BCl3, CF4, CH2Cl2, NH3, and H2O.

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00:00 Lesson Introduction
00:53 Electronegativity and Polar Covalent Bonds
05:48 CO2 Polar or Nonpolar
09:08 COS Polar or Nonpolar
10:18 BCl3 Polar or Nonpolar
12:25 CF4 Polar or Nonpolar
14:26 CH2F2 Polar or Nonpolar
16:18 NH3 and H2O Polar or Nonpolar

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