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Water interactions

  • HESI A2
  • Biology
  • Select all that apply
  • Difficulty 3 of 5

Question

Which observations illustrate cohesion or adhesion of water? Select all that apply.

  1. Water molecules remain together in a bead.✓ Correct

    Water attracting water illustrates cohesion.

  2. Water clings to a glass surface.✓ Correct

    Attraction between water and glass illustrates adhesion.

  3. Water molecules pull toward neighboring water molecules.✓ Correct

    This is cohesion.

  4. Water and a surface repel each other.✗ Incorrect

    Adhesion is attraction, not repulsion.

  5. Water molecules repel their neighboring water molecules.✗ Incorrect

    Cohesion describes attraction among them.

Answer

A. Water molecules remain together in a bead. · B. Water clings to a glass surface. · C. Water molecules pull toward neighboring water molecules.

Rationale

Cohesion occurs within water, while adhesion involves another material. Both describe attraction.

RememberWater-to-water attraction is cohesion; water-to-other attraction is adhesion.

Sources

  • Adhesion and Cohesion of Water U.S. Geological Survey · License: US government work (public domain) · Retrieved · Adhesion and Cohesion of Water

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