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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. At liquid–air interfaces, surface tension results from the greater attraction of liquid molecules to each other (due to cohesion ) than to ...
4 de may. de 2024 · Water has a surface tension of 0.07275 joule per square metre at 20 °C (68 °F). In comparison, organic liquids, such as benzene and alcohols, have lower surface tensions, whereas mercury has a higher surface tension. An increase in temperature lowers the net force of attraction among molecules and hence decreases surface tension.
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6 de jun. de 2019 · Surface tension in water might be good at performing tricks, such as being able to float a paper clip on its surface, but surface tension performs many more duties that are vitally important to the environment and people. Find out all about surface tension and water here.
Surface Tension of Water. Surface tension of water at some temperatures: Surface Tension Common Fluids. Surface tension of fluids at 25oC (77oF). Surface Active Agents. Soaps, detergents or surfactants - also called surface-active agents - added to to water even in small substances decreases the surface tension of water to a considerable extent.
Surface tension of water can cause things to float which are denser than water, allowing organisms to literally walk on water (Figure \(\PageIndex{2}\) ). An example of such an organism is the water strider, which can run across the surface of water, due to the intermolecular forces of the molecules, and the force of the strider which is ...
12 de feb. de 2020 · Updated on February 12, 2020. Surface tension is a phenomenon in which the surface of a liquid, where the liquid is in contact with a gas, acts as a thin elastic sheet. This term is typically used only when the liquid surface is in contact with gas (such as the air).
8 years ago. Water has a high surface tension because the water molecules on the surface are pulled together by strong hydrogen bonds. That means a drop of water will "want" to have the smallest possible surface area. The shape that has the smallest possible area for a given volume is a sphere.
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