How do I know if a Molecule is Polar or Nonpolar ?
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Solution
Polarity is important because it decides whether molecule is hydrophilic or hydrophobic (from Greek for water-loving) from the Greek for water-fearing or water-averse.
High polarity molecules are hydrophilic, and they interact well with other polar materials such as water.
Water (H2O) is an example of a polar molecule. since on one hand, it has a slight positive charge and on the other, a slight negative charge.
The dipoles, resulting in a net dipole, do not cancel out. Other polar molecules are normally able to dissolve in water due to the polar structure of the water molecule itself.