AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The property of water that results in water molecules “sticking” to other charged or polar molecules is
A
cohesion
B
adhesion
C
high specific heat
D
high heat of fusion
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: -Water has cohesive and adhesive properties. Cohesive forces are responsible for surface tension, the tendency of a liquid’s surface to resist rupture when placed under tension or stress. Water also has adhesive properties that allow it to stick to substances other than itself.

Detailed explanation-3: -Water molecules stick to other materials due to its polar nature. This property is called adhesion.

Detailed explanation-4: -Adhesion makes a water drop a drop. Water is highly cohesive-it is the highest of the non-metallic liquids. Water is sticky and clumps together into drops because of its cohesive properties, but chemistry and electricity are involved at a more detailed level to make this possible.

Detailed explanation-5: -The bonds between the oxygen and hydrogen atoms in water are polar, giving the oxygen a partial negative charge and the hydrogens a partial positive charge. The result is that water molecules hydrogen bond with other substances as well as each other, resulting in cohesion and adhesion.

There is 1 question to complete.