BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Is the attractive force in liquids that pulls surface molecules into the rest of the liquid, minimizing the surface area.
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The feeling that something is not right.
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The tight feeling on the outside of your skin.
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Detailed explanation-1: -Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to float on a water surface without becoming even partly submerged.
Detailed explanation-2: -The surface tension of a liquid results from an imbalance of intermolecular attractive forces, the cohesive forces between molecules: A molecule in the bulk liquid experiences cohesive forces with other molecules in all directions.
Detailed explanation-3: -Force of cohesion is the attractive force between the molecules which is responsible for the surface tension.
Detailed explanation-4: -Cohesion and Surface Tension The cohesive forces between molecules in a liquid are shared with all neighboring molecules. Those on the surface have no neighboring molecules above and, thus, exhibit stronger attractive forces upon their nearest neighbors on and below the surface.
Detailed explanation-5: -This general effect is called surface tension. Molecules on the surface are pulled inward by cohesive forces, reducing the surface area. Molecules inside the liquid experience zero net force, since they have neighbors on all sides.