AP BIOLOGY

Detailed explanation-1: -This is because water is a polar molecule – its structure means that is has a positive charge one end and a negative charge the other end. Water molecules stick together because the positive end of one water molecule is attracted to the negative end of another. The structure of an oil molecule is non polar.

Detailed explanation-2: -Water molecules are polar and one end has a slight negative charge, the other a slight positive charge. Those charges let the molecules form hydrogen bonds and attach to other molecules that are polar, including other water molecules. Oil molecules, however, are non-polar, and they can’t form hydrogen bonds.

Detailed explanation-3: -Oil is a non-polar molecule, while water is a polar molecule. While all molecules are attracted to each other, some attractions are stronger than others.

Detailed explanation-4: -Nonpolar molecules, like fats and oils, don’t interact with water or form hydration shells. These molecules don’t have regions of partial positive or partial negative charge, so they aren’t electrostatically attracted to water molecules.

Detailed explanation-5: -Water molecules are polar molecules. That means one end of the molecule has a positive charge and the other end has a negative charge. This allows water molecules to bond together. Oil molecules, on the other hand, are non-polar.