Question

In 4-5 sentences, explain and elaborate: Is a molecule with polar bonds always a polar molecule? Why or why not. INCLUDE a definition of polar bonds and polar molecules in your answer. Make your answer simple, coherent, and intended for 9th grade.

Answer 1

A polar bond is when two atoms in a bond pull on the shared electrons unequally, giving one end a slight negative charge and the other end a slight positive charge. A polar molecule is one that has an overall uneven distribution of charge, so one side of the whole molecule is a bit negative and the other side is a bit positive. A molecule with polar bonds is not always polar because the shape of the molecule can make the bond polarities cancel each other out. For example, CO2 has two polar bonds but is linear so the charges cancel and the molecule is nonpolar, while H2O has polar bonds and a bent shape so it is a polar molecule.