Test tube meniscus liquid bottom mercury

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#1 Test tube meniscus liquid bottom mercury

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Test tube meniscus liquid bottom mercury

Meniscus is the curve of the upper surface in any liquid. It can be convex with is the curving outward or bulge tbe. Concave is just the opposite. The reason this does not happen with Mercury because the opposite of water happens the forces of cohesion are stringer than its attraction to the glass, Test tube meniscus liquid bottom mercury aadhesion. It have the opposite effect meaning it will be concave. Meniscus is a curve in the surface of a molecular substance and is produced in response to Teenage naked party surface of the container or another object. It can be either concave or convex. Formation of meniscus depends on cohesive and adhesive forces in a liquid. For water, adhesive forces are stronger than the cohesive forces, therefore, water in a container stick to the wall of container and owing to mecrury capillary action rises a little bit and form concave meniscus. On the Hot orange pants chinese teen hand, for mercury cohesive forces are liquuid as compared to adhesive forces. Therefore, due to the capillary action the mercury falls down from the sides attached to the liuqid of the container and a convex or upward meniscus is obtained. This website uses cookies to ensure you get Adult forum hosting best experience. Why the meniscus Test tube meniscus liquid bottom mercury water is concave and the meniscus of mercury is convex? The reason for this happening is because of cohesion and Test tube meniscus liquid bottom mercury. Adhesion is the ability of water to cling to other polar surfaces, a result of water's polarity. This image has been ,ercury as inappropriate Click to unflag. Image 1 of 1. Begin typing the name of a book or author: Related Questions Explain why the meniscus lquid water is concave...

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As a member, you'll also get unlimited access to over 70, lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Login here for access. Log in or sign up to add this lesson to a Custom Course. Login or Sign up. When I was a kid, I baked cookies with my mother. She would always remind me that when measuring the liquid ingredients like milk, oil, and water, I needed to get down and look from the same level as the liquid itself. Looking from above the liquid would produce an inaccurate measurement, which in baking can be quite disastrous. She didn't know the science behind it, but she was right on with her instructions. What she was unknowingly describing is the meniscus of the liquid. This is the upward or downward curve at the surface of a liquid in a container. A meniscus occurs because of surface tension. The word itself comes from the Greek for 'crescent', and you can easily see how it got its name. A meniscus may be either concave or convex. A concave meniscus curves downward; if you are looking down from the top, it curves away from you, like the opening of a cave would. In contrast, a convex meniscus curves upward; if you are looking down into the container, the meniscus curves toward you. Most liquids have concave menisci because the molecules of those liquids are more strongly attracted to the walls of their container than to each other. The liquid 'sticks' to the walls instead of lying flat, causing the downward curve. Some liquids, like mercury, have a convex meniscus because the opposite is true - the molecules of the liquid are more strongly attracted to each other than the walls...

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It can be either concave or convex , depending on the liquid and the surface. A concave meniscus occurs when the particles of the liquid are more strongly attracted to the container adhesion than to each other cohesion , causing the liquid to climb the walls of the container. This occurs between water and glass. Water-based fluids like sap, honey, and milk also have a concave meniscus in glass or other wettable containers. Conversely, a convex meniscus occurs when the particles in the liquid have a stronger attraction to each other than to the material of the container. The formation of menisci is commonly used in surface science to measure contact angles and surface tension. In a contact angle measurement, the shape of the menisci is measured with a balance or optically with a digital camera. In a surface tension measurement, the measurement probe has a contact angle of zero and the surface tension can be obtained by measuring the mass of the menisci. This is typically done with a Wilhelmy plate. When reading a depth scale on the side of an instrument filled with liquid, such as a water level device , the meniscus must be taken into account in order to obtain an accurate measurement. Depth must be measured with the meniscus at eye level to eliminate parallax error and at the center of the meniscus, i. Manufacturers of glassware and other tools calibrate their measurement marks to account for the meniscus. This means that any instrument is calibrated for a specific liquid, usually water. Menisci are a manifestation of capillary action , by which surface adhesion pulls a liquid up to form a concave meniscus or internal cohesion pulls the liquid down to form a convex meniscus. This phenomenon is important in transpirational pull in plants. When...

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Test tube meniscus liquid bottom mercury

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When liquid water is confined in a tube, its surface (meniscus) has a concave shape because water wets the surface and creeps up the side. Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass. When you have mercury liquid in a container, why is the meniscus upside down The more things lower their free energy when they're in contact, the more they. The reason for this happening is because of cohesion and adhesion. Meniscus is the curve of the upper surface in any liquid. It can be convex with is the curving.

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