Adhesion, Cohesion & Surface Tension

Front

What is adhesion?

Back

Adhesion is the tendency of different substances to stick to each other, such as water molecules sticking to a leaf.

Front

What is cohesion?

Back

Cohesion is the tendency of molecules of the same kind to stick to one another, like water molecules attracting 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

What is a polar molecule?

Back

A polar molecule is a molecule in which opposite ends have opposite electric charges, like water (H2O).

Front

How does cohesion affect water behavior?

Back

Cohesion allows water molecules to stick together, which helps in processes like water transport in plants.

Front

How does adhesion affect water behavior?

Back

Adhesion allows water to stick to other surfaces, which is important for processes like capillary action.

Front

What is an example of adhesion?

Back

An example of adhesion is water droplets forming on a leaf.

Front

What is an example of cohesion?

Back

An example of cohesion is water forming droplets on a smooth surface.

Front

What happens when a paperclip floats on water?

Back

The paperclip floats due to surface tension, which allows the water to support the weight of the paperclip.

Front

What role does surface tension play in insects walking on water?

Back

Surface tension allows small insects, like water striders, to walk on the surface of water without sinking.