NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The property of water that allows ice to float on the surface of liquid water
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The property of water that allows it to dissolve polar substances
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When water molecules stick to other surfaces
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The property of water that allows water to move up a thin tube (or the stem of a plant) by itself
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Detailed explanation-1: -Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances).
Detailed explanation-2: -An example of capillary action is what happens inside a drinking straw left in a cup of water. The force of adhesion which holds the water together and to the straw is a little stronger than gravity, so the water will rise inside the straw a little higher than the rest of the water.
Detailed explanation-3: -Capillary action can be defined as the ascension of liquids through slim tube, cylinder or permeable substance due to adhesive and cohesive forces interacting between the liquid and the surface.