Question

a scoop - shaped concave meniscus forms when adhesive forces between a liquid and its container are stronger than cohesive forces between the liquid molecules. but if cohesive forces are stronger than adhesive forces, a hump - shaped convex meniscus forms instead on the liquids surface.
the models show three different liquids in glass columns. there are cohesive forces between the molecules in each liquid, and there are adhesive forces between each liquid and the glass column. match the descriptions of adhesive and cohesive forces to each model.
adhesive and cohesive forces are equal. cohesive forces are greater than adhesive forces. adhesive forces are greater than cohesive forces.
oil water mercury

Explanation:

• For oil: The meniscus is flat, which means adhesive and cohesive forces are equal.
• For water: The meniscus is concave (scoop - shaped), so adhesive forces are greater than cohesive forces.
• For mercury: The meniscus is convex (hump - shaped), so cohesive forces are greater than adhesive forces.

Answer:

• Oil: Adhesive and cohesive forces are equal.
• Water: Adhesive forces are greater than cohesive forces.
• Mercury: Cohesive forces are greater than adhesive forces.