AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or False? Cohesion is hydrogen bonds that form between water and other polar molecules, causing water to stick to them.
A
True
B
False
Explanation: 

Detailed explanation-1: -Water has an amazing ability to adhere (stick) to itself and to other substances. The property of cohesion describes the ability of water molecules to be attracted to other water molecules, which allows water to be a “sticky” liquid.

Detailed explanation-2: -Cohesion refers to the attraction of molecules for other molecules of the same kind, and water molecules have strong cohesive forces thanks to their ability to form hydrogen bonds with one another.

Detailed explanation-3: -The opposite charges attract each other like magnets and form a hydrogen bond. Hydrogen bonds are not strong bonds, but they make the water molecules stick together. The bonds cause the water molecules to associate strongly with one another. But these bonds can be broken by simply adding another substance to the water.

Detailed explanation-4: -Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.

Detailed explanation-5: -Polarity is what creates water’s adhesive and cohesive properties. Adhesion is an attraction between molecules of different substances, like how water sticks within the material of a napkin. When molecules of the same substance are attracted to each other they exhibit cohesion.

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