Cohesion of water contributes to which property?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Cohesion of water contributes to which property?

Explanation:
Cohesion among water molecules pulls them together, especially at the surface. At the air–water interface, surface molecules are attracted inward by cohesive forces, leaving fewer neighbors above them. That inward pull makes the surface behave like a stretched skin, which we measure as surface tension. Water’s strong hydrogen bonding strengthens these cohesive forces, giving it a notably high surface tension. While intermolecular forces also influence vapor pressure, boiling point, and solubility, the most direct effect of cohesion is the creation of surface tension.

Cohesion among water molecules pulls them together, especially at the surface. At the air–water interface, surface molecules are attracted inward by cohesive forces, leaving fewer neighbors above them. That inward pull makes the surface behave like a stretched skin, which we measure as surface tension. Water’s strong hydrogen bonding strengthens these cohesive forces, giving it a notably high surface tension. While intermolecular forces also influence vapor pressure, boiling point, and solubility, the most direct effect of cohesion is the creation of surface tension.

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