AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the attractive force between two bodies of different substances that are in contact with each other? This is the property of a water molecule that allows it to stick to other substances.
A
adhesion
B
cohesion
C
specific heat
D
universal solvent
Explanation: 

Detailed explanation-1: -Similarly, the term “adhesive forces” refers to the attractive forces between unlike substance, such as mechanical forces (sticking together) and electrostatic forces (attraction due to opposing charges). In the case of a liquid wetting agent, adhesion causes the liquid to cling to the surface on which it rests.

Detailed explanation-2: -Cohesion: Hydrogen Bonds Make Water Sticky In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

Detailed explanation-3: -Capillary action occurs when the adhesion to the walls is stronger than the cohesive forces between the liquid molecules.

Detailed explanation-4: -Definition of Adhesion and Cohesion As for the definitions, the tendency of two or more different molecules to bond with each other is known as adhesion, whereas the force of attraction between the same molecules is known as cohesion.

Detailed explanation-5: -Cohesion is the ability of like molecules to stick together. Water is strongly cohesive (it will form hydrogen bonds)

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