What are polar and non polar substance?

Polar substances are molecules that have an uneven distribution of electrons, resulting in a slight positive and negative charge on opposite ends of the molecule. This creates a dipole moment, making the molecule polar. Examples of polar substances include water and ammonia.

Nonpolar substances, on the other hand, have an even distribution of electrons, resulting in no overall charge on the molecule. This means that there is no dipole moment, making the molecule nonpolar. Examples of nonpolar substances include methane and carbon dioxide.