Molecules that are not alike often share a force of attraction, this intermolecular force is called:

The correct choice is based on the concept of intermolecular forces that occur between molecules that are different or not alike. This phenomenon is referred to as adhesion. Adhesion describes the attractive force that exists between unlike molecules, such as water molecules adhering to a glass surface or glue binding two different materials together. This force is crucial in various applications, including the sticking of substances and the behavior of liquids in different environments.

In contrast, cohesion relates to the attraction between like molecules, which helps explain surface tension in liquids. Mass refers to the amount of matter in a substance and does not pertain to molecular attraction, while elements are pure substances that consist of only one type of atom and do not specifically describe molecular interactions. Understanding these distinctions is important for grasping the principles of chemistry and materials science in the context of millwrighting.