Final answer:
Molecules with an uneven distribution of charge are described as polar, which allows them to interact well with other polar substances like water, being hydrophilic as a result.
Step-by-step explanation:
Molecules with an uneven distribution of charge, making them slightly charged, are described as polar. This polarity is caused by a slight shifting of positive and negative charges to opposite sides of an atom or molecule. Water is an example of a polar molecule, which has a significant polarity due to the uneven distribution of electrons in its covalent bonds. Such molecules interact well with other polar substances, including water itself, making them hydrophilic (water-loving). Conversely, nonpolar molecules do not interact well with polar substances and are thus described as hydrophobic (water-fearing).