Which property of water is demonstrated when water molecules are attracted to other water molecules?

• A. Adhesion
• B. Capillarity
• C. Cohesion
• D. Surface tension

Answer: (C)

Verified step by step guidance

1. Understand the key terms: Cohesion refers to the attraction between molecules of the same substance, such as water molecules being attracted to each other. Adhesion refers to the attraction between molecules of different substances, such as water molecules sticking to a glass surface.
2. Recognize the property of water being described: The problem mentions water molecules being attracted to other water molecules, which is a hallmark of cohesion.
3. Relate cohesion to hydrogen bonding: Water molecules exhibit cohesion due to hydrogen bonds forming between the slightly positive hydrogen atoms of one molecule and the slightly negative oxygen atoms of another molecule.
4. Connect cohesion to observable phenomena: Cohesion is responsible for surface tension, which allows water to resist external forces and form droplets.
5. Conclude that the correct property demonstrated in this scenario is cohesion, as it specifically describes the attraction between water molecules.