Adhesion, Cohesion & Surface Tension

Front

What is adhesion?

Back

Adhesion is the attraction between water molecules and other substances.

Front

What is cohesion?

Back

Cohesion is the attraction between water molecules to each other.

Front

What is surface tension?

Back

Surface tension is the property of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.

Front

Which end of the water molecule has a slightly positive charge?

Back

The hydrogen end.

Front

Why do water droplets take a spherical shape?

Back

Because of cohesion, water molecules are attracted to each other, forming a spherical shape.

Front

What happens when water molecules stick to a leaf?

Back

This is an example of adhesion.

Front

What is an example of cohesion in nature?

Back

Water striders can walk on water due to the cohesive forces between water molecules.

Front

What is an example of adhesion in nature?

Back

Water climbing up a paper towel is an example of adhesion.

Front

How does surface tension affect small objects?

Back

Small objects can float on the surface of water if they do not break the surface tension.

Front

What is the relationship between cohesion and surface tension?

Back

Cohesion contributes to surface tension, as the attraction between water molecules creates a 'skin' on the surface.