Just studying biochemistry and realize something. Picture above is space-filling model from H2O. H2O is a molecule that form our body the most. And its has polar covalent bond. Polar covalent bond is a bond in which electrons are shared between elements having a difference in electronegativity of between 0.5 and ~2.0. It is a bond in which the electron density is unsymmetrical. It also works in a relationship. We share our feeling, our vision, our destination, our dreams, although we both have a widely different characteristic. But that's life. Differences is beautiful.
