Adhesion, Cohesion & Surface Tension

Front

What is cohesion in the context of water molecules?

Back

Cohesion refers to the attraction between water molecules, causing them to stick together.

Front

What property of water causes it to bead up on surfaces like a penny?

Back

High surface tension is the property that causes water to bead up on surfaces.

Front

What is adhesion in relation to water?

Back

Adhesion is the ability of water to stick to other substances.

Front

How does adhesion affect water's interaction with leaves?

Back

Adhesion allows water to stick to the surface of leaves, as seen in the example of water droplets on leaves.

Front

What characteristic of water allows a paperclip to float on its surface?

Back

Surface tension allows a paperclip to float on water when placed gently on the surface.

Front

Define surface tension in the context of liquids.

Back

Surface tension is the cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.

Front

How does temperature affect the surface tension of water?

Back

As temperature increases, the surface tension of water decreases.

Front

What role does hydrogen bonding play in cohesion and adhesion?

Back

Hydrogen bonding is responsible for both cohesion (water molecules sticking to each other) and adhesion (water molecules sticking to other substances).

Front

Explain how cohesion contributes to the phenomenon of capillary action.

Back

Cohesion allows water molecules to stick together, which, combined with adhesion to the walls of a narrow tube, enables capillary action.

Front

What is the significance of surface tension in biological systems?

Back

Surface tension is crucial for processes like the movement of water in plants and the formation of cell membranes.