Polar molecules DO have negative and positive poles.

Here's why:

* Uneven Distribution of Electrons: Polar molecules have an uneven distribution of electrons. One end of the molecule has a slightly negative charge (δ-), while the other end has a slightly positive charge (δ+).

* Electronegativity: This uneven distribution is caused by differences in electronegativity between the atoms in the molecule. Electronegativity is the ability of an atom to attract electrons in a bond.

* Water Example: In water (H₂O), the oxygen atom is more electronegative than the hydrogen atoms. This means the oxygen atom pulls the shared electrons closer to itself, making the oxygen end of the molecule slightly negative (δ-) and the hydrogen ends slightly positive (δ+).

So, to summarize, polar molecules have distinct negative and positive poles due to an uneven distribution of electrons.