AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Adhesion is an attraction of water molecules to
A
other water molecules.
B
other molecules such as glass.
Explanation: 

Detailed explanation-1: -The force of adhesion is the attraction between different types of molecules. For example-when a glass filled with water is empties some water, the particles remain stuck to the glass due to the adhesion between water molecular and glass.

Detailed explanation-2: -This is because the water molecules are attracted to the charged glass walls of the capillary more than they are to each other and therefore adhere to it. This type of adhesion is called capillary action.

Detailed explanation-3: -Water and glass have a smaller attractive force, called adhesion rather than cohesion to distinguish the intermolecular forces between two separate bodies (glass attracting water) from those of water attracting water. Adhesion between water and glass leads to capillary rise in a glass tube.

Detailed explanation-4: -Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.

Detailed explanation-5: -Adhesion refers to the tendency of water molecules to be attracted, or ‘’stick”, to other substances. This is a result of the covalent bond between the two hydrogen atoms and the one oxygen atom in the water molecule.

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