Polar Covalent, Nonpolar Covalent and Ionic Bonds - This is a quick video describing the differences between Ionic Bonds and Covalent bonds (Polar Covalent Bonds and Nonpolar Covalent Bonds). This video demonstrates how these bonds can be classified based on electronegativity. This video also defines what a polar bond is, relative to an ionic bond. Bond polarity is a difficult topic, so I try extra hard to make it clear. I really think you can watch the video, then totally understand the topic. I have another video which explains the polarity of molecules. Molecular polarity depends on bond polarity to a certain degree. Check it out if you like this video.