Question

1. oils are nonpolar substances (molecules formed by nonpolar covalent bonds) that do not interact with water. propose an explanation for why oils are not attracted to water, whereas a substance like nacl (table salt) is attracted to h₂o. when answering this question, ask yourself the following: is nacl charged?

Explanation:

Water is a polar molecule with a partial positive charge on hydrogen and partial negative charge on oxygen. Oils are non - polar, so there are no favorable electrostatic interactions between non - polar oil molecules and polar water molecules. NaCl is an ionic compound. In water, it dissociates into $Na^+$ and $Cl^-$ ions. These charged ions are attracted to the oppositely charged parts of water molecules through ion - dipole interactions.

Answer:

Oils are non - polar and have no favorable interactions with polar water. NaCl is ionic, and its ions are attracted to water through ion - dipole interactions.