Which property of water is responsible for the attraction between water molecules?

• A. Surface tension
• B. Capillary action
• C. Adhesion
• D. Cohesion

Answer: (D)

Verified step by step guidance

1. Understand the concept of cohesion: Cohesion refers to the attraction between molecules of the same substance. In the case of water, this is due to hydrogen bonding between water molecules.
2. Explore hydrogen bonding: Water molecules are polar, meaning they have a partial positive charge on one side and a partial negative charge on the other. This polarity allows them to form hydrogen bonds with each other.
3. Relate cohesion to water's properties: Cohesion is responsible for many of water's unique properties, such as surface tension, which is the result of water molecules sticking together at the surface.
4. Differentiate cohesion from adhesion: While cohesion involves attraction between similar molecules, adhesion refers to the attraction between different substances, such as water molecules and the walls of a container.
5. Connect cohesion to the problem: The attraction between water molecules due to cohesion is what allows them to stick together, leading to phenomena like surface tension and capillary action.