Question

The picture shows water droplets hanging on the tips of pine needles. How do they physical properties of water result in the image shown?
a.) Cohesion allows water droplets to form and adhesion keeps the droplets on the needles.


b.) Adhesion allows water droplets to form and cohesion keeps the droplets on the needles.


c.) Cohesion allows water droplets to form and capillarity keeps the droplets on the needles.


d.) Adhesion allows water droplets to form and capillarity keeps the droplets on the needles.

Answer 1

Cohesion- attraction of molecules of the same substanceCauses water molecules to be drawn together to form a smooth surface (surface tension)adhesion- attraction of molecules to different substancesThe correct answer is A because the cohesion causes water to form in drops, and adhesion allows it to stick to different substances, such as the pine needles

Answer 2

Answer:

The correct answer is option a.

Explanation:

Cohesion and adhesion are the characteristics of water, which influences every molecule of water on Earth and also the association of the molecules of water with the molecules of other components. These properties of cohesion and adhesion refer to the stickiness, which the molecules of water exhibit for each other and for other components.  

In the given diagram, one can see that the water drop comprises molecules of water, which are stuck together, that is, an illustration of the property of cohesion. The drops of water are held at the terminals of the pine needles, that is, an illustration of the property of adhesion.