AP BIOLOGY

Detailed explanation-1: -Adhesion is the ability of water molecules to bond with other molecules. This allows water to stick to windows and other substances.

Detailed explanation-2: -A water drop is composed of water molecules that like to stick together-an example of the property of cohesion. In the picture of pine needles above, the water droplets are stuck to the end of the pine needles-an example of the property of adhesion.

Detailed explanation-3: -Cohesion is how water molecules like to cling to each other. You may have seen this bond while watching raindrops sliding down a glass window. When one drop touches another, they turn into a larger drop. (The water clinging to the glass is adhesion.)

Detailed explanation-4: -Water likes to stick to itself, but under certain circumstances, it actually prefers to stick to other types of molecules. Adhesion is the attraction of molecules of one kind for molecules of a different kind, and it can be quite strong for water, especially with other molecules bearing positive or negative charges.

Detailed explanation-5: -Have you ever filled a glass of water to the very top and then slowly added a few more drops? Before it overflows, the water forms a dome-like shape above the rim of the glass. This dome-like shape forms due to the water molecules’ cohesive properties, or their tendency to stick to one another.