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Mercury has a convex meniscus because the intermolecular forces between Mercury atoms are stronger than those between mercury atoms and glass molecules of a tube. The outermost mercury atoms are attracted to central mercury atoms and go towards the center of the tube. This force of attraction is slightly stronger than the force of gravity on the uppermost mercury molecules, so the meniscus is slightly elevated to a peak and is convex.
What else can I help you with?
Does meniscus always concave?
Do you mean is a meniscus always concave? If so, then no. For example, the meniscus of mercury is convex.
Every thing about Mercury?
Mercury is a poisonous liquid with a shiny surface and a convex meniscus, especially at room temperature.
What kind of characteristics does mercury have?
At room temperature, a clean sample is a shiny liquid with a convex meniscus.
Is there any other fluids that shows the same property as mercury regarding the convex meniscus?
Yes, gallium is another fluid that can also exhibit a convex meniscus. Gallium is a metal that remains in liquid form over a wide range of temperatures, similar to mercury, and can display convex meniscus when placed in certain materials like glass.
Why does meniscus of mercury curve in opposite directions?
The meniscus of mercury curves in opposite directions depending on the container it is in due to the difference in adhesive and cohesive forces. In a glass container, adhesive forces dominate causing a concave meniscus, while in a steel container, cohesive forces dominate causing a convex meniscus. The direction of the curvature is determined by the balance of these forces.
State two types of meniscus shape?
The two types of meniscus shape are concave and convex. Concave meniscus has a curved surface where the edges dip below the center, like in a test tube. Convex meniscus has a curved surface where the edges rise above the center, like in a droplet of water on a surface.
Which is the only liquid which is measured from an upper miniscus?
Mercury is the only liquid that is commonly measured using the upper meniscus. This is due to its unique properties, such as high density and low surface tension, that cause it to form a convex meniscus rather than a concave one like most other liquids.
What is the curve along the top of a liquids surface?
Meniscus.
What is a curved surface on a liquid called?
A meniscus, but whether it has a positive curve or a negative one depends on whether it wets the glass.
Why is water or alcohol or acid have a lower meniscus while mercury have an upper meniscus?
Surface tension will attract the water solution to the molecules of the container thus lifting it up on the edges. Mercury, being much more dense has no such attraction because it is a liquid metal.Answer:It is due to what is called cohesion and adhesion. The water molecules are attracted to each other through cohesion, which is the attraction between similar particles (by polarity). Adhesion is attraction between unlike molecules. When water is placed in a glass container, the forces of adhesion overcome the forces of cohesion, and the water climbs up the glass. Conversely, the attraction between mercury atoms (cohesion) is stronger than its attraction to the glass (adhesion). Therefore, the atoms pull together and away from the glass.
What liquid's meniscus curve up?
Water's meniscus curves up. Mercury's meniscus curves down.
Would a graduated cylinder be read at the middle of a meniscus?
The answer depends on the liquid, or more specifically, how the surface tension in the liquid affects the meniscus. It should be the top of the meniscus for liquids such as mercury but the bottom for liquids such as water or alcohol.
