what is polar and nonpolar?
Polar and nonpolar describe how electrical charges are distributed in a molecule.
| Feature | Polar Molecules | Nonpolar Molecules |
|---|---|---|
| Charge Distribution | Uneven | Even |
| Poles | Positive and negative ends are present | No distinct positive or negative ends |
| Electron Sharing | Unequal sharing of electrons | Equal sharing of electrons |
| Solubility | Usually dissolve in water | Usually do not dissolve in water |
| Examples | Water (H₂O), Hydrogen chloride (HCl) | Oxygen (O₂), Nitrogen (N₂), Methane (CH₄) |
Example:
Water is a polar molecule because oxygen attracts electrons more strongly than hydrogen, creating partial positive and negative ends.
In simple terms: Polar molecules have an uneven distribution of charge, while nonpolar molecules have a balanced distribution of charge.