Question

question 10 (1 point) listen a needle can be made to \float\ on the surface tension of water. what causes this surface tension to form? a) the adhesion of water molecules to the needle b) the solubility of water c) the cohesion of water molecules to each other d) the heat capacity of water

Explanation:

To determine the cause of water's surface tension:

• Option A: Adhesion is attraction between different substances (water and needle), not the cause of surface tension within water.
• Option B: Solubility relates to dissolving other substances, not surface tension.
• Option C: Cohesion is the attraction between water molecules. Surface tension occurs because water molecules at the surface are more strongly attracted to each other (cohesion) than to the air above, creating a "film" effect.
• Option D: Heat capacity relates to water's ability to absorb heat, not surface tension.

Answer:

C) The cohesion of water molecules to each other