LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Measure of how difficult it is to break the surface of a liquid.
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Water molecules climbing up against the force of gravity.
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Water molecules attracted to other substances.
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Water molecules dissolving many substances because of its polarity.
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Detailed explanation-1: -Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the walls is stronger than the cohesive forces between the liquid molecules.
Detailed explanation-2: -An example of capillary action is when you place a straw into a glass of water. The water seems to climb up the straw before you even place your mouth on the straw. The water has created hydrogen bonds with the surface of the straw, causing the water to adhere to the sides of the straw.
Detailed explanation-3: -Capillary action (or capillarity) describes the ability of a liquid to flow against gravity in a narrow space such as a thin tube.
Detailed explanation-4: -This upward motion against gravity, known as capillary action, depends on the attraction between water molecules and the glass walls of the tube (adhesion), as well as on interactions between water molecules (cohesion).
Detailed explanation-5: -Capillarity is a physical phenomenon in which liquids flow without the help of gravity. Liquid even rise to a height against gravity, through narrow tubes. Capillary action is due to the phenomenon of surface tension of liquid as well as adhesive forces between liquid molecules and molecules of the narrow tube.