8/16 - Cohesion, Adhesion and Surface Tension

Front

What is the term for the tightness across the surface of water that enables objects to float?

Back

Surface tension.

Front

What phenomenon occurs when water molecules stick to other surfaces, such as a leaf?

Back

Adhesion.

Front

Define cohesion in the context of water molecules.

Back

Cohesion is the attraction between water molecules to other water molecules.

Front

What property of water allows a paperclip to float when placed gently on its surface?

Back

Surface tension.

Front

Provide an example of cohesion in water.

Back

Water sticking to water.

Front

What is the difference between cohesion and adhesion?

Back

Cohesion refers to the attraction between similar molecules (e.g., water to water), while adhesion refers to the attraction between different molecules (e.g., water to a leaf).

Front

How does surface tension affect small objects placed on water?

Back

Surface tension can allow small objects, like a paperclip, to float on the surface of water without sinking.

Front

What role does temperature play in surface tension?

Back

As temperature increases, surface tension generally decreases due to increased molecular movement.

Front

What is the significance of water's high surface tension in nature?

Back

It allows insects to walk on water and helps in the transport of water in plants.

Front

How does the molecular structure of water contribute to its cohesive properties?

Back

Water molecules are polar, leading to hydrogen bonding, which creates strong cohesive forces.