What is the definition of meniscus in science?

Asked By: Faruk Aranega | Last Updated: 15th June, 2020
Category: medical health bone and joint conditions
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A meniscus is a phase boundary that has been curved because of surface tension. In the case of water and most liquids, the meniscus is concave. Mercury produces a convex meniscus.

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Just so, what is meniscus in laboratory?

A meniscus is what happens when you put a liquid into a container. When you put water in a beaker or test tube, you see a curved surface. With most liquids, the attractive force between the liquid and the container is greater than the attraction between the individual liquid molecules.

Furthermore, why is a meniscus important? The meniscus plays a vital role in maintaining the stability of the knee joint along with optimizing the tibiofemoral load transfer and distribution. This also helps in preserving the health of the articular cartilage.

In this regard, how do you read a meniscus in chemistry?

A meniscus occurs because of surface tension in the liquid and must be read at eye level. For a concave meniscus, the correct volume will be read at the bottom of the curve. For a convex meniscus, the opposite is true and the correct reading will be at the top of the curve.

What is a meniscus in a graduated cylinder?

A meniscus is the curved surface at the top of a column of liquid. In a science class, this liquid is usually water or some sort of aqueous solution, and the column is usually a graduated cylinder or a pipet. As you may have noticed, when water is in such a thin glass tube, it does not have a flat surface at the top.

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Do you read the top or bottom of the meniscus formed in the graduated cylinder?

Concave menisci are read from the bottom of the curve at eye level. A meniscus is a curve formed on the upper surface of a liquid inside a container. This curve is formed by the surface tension between the liquid and the container holding the liquid.

What liquids have a convex meniscus?

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.

Why does water have a meniscus?

Why a meniscus occurs
Adhesion is responsible for a meniscus and this has to do in part with water's fairly high surface tension. And since water molecules like to stick together, when the molecules touching the glass cling to it, other water molecules cling to the molecules touching the glass, forming the meniscus.

Why is mercury meniscus convex?

Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass. When liquid mercury is confined in a tube, its surface (meniscus) has a convex shape because the cohesive forces in liquid mercury tend to draw it into a drop.

Why are burette readings taken from the top of the meniscus?

The 0.00 mark is near the top. When filled to the 0.00 ml mark the buret is saying " 0.00 mL of the solution has been delivered." The curved surface at the top of the liquid level is called a meniscus. The meniscus is created by surface tension of the liquid and the extent thatthe liquid "wets" the wall.

What is the dent on the surface of water called?

A: A meniscus is the curved surface at the top of a column of liquid. In a science class, this liquid is usually water or some sort of aqueous solution, and the column is usually a graduated cylinder or a pipet.

Why is Mercury convex and water concave?

A concave meniscus, which is what you normally will see, occurs when the molecules of the liquid are attracted to those of the container. This occurs with water and a glass tube. A convex meniscus occurs when the molecules have a stronger attraction to each other than to the container, as with mercury and glass.

What is meniscus error?

• Unit error. Meniscus Error. Since water molecules are attracted to the sides of the measuring cylinder and this force. decreases with distance from the sides, water has a downward curving surface or. MENISCUS.

What determines which glassware you measure with?

Graduated cylinders, beakers, volumetric pipets, burets and volumetric flasks are five kinds of glassware often used to measure out specific volumes. Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy.

How can you measure mass?

1) Mass is a measurement of the amount of matter something contains, while Weight is the measurement of the pull of gravity on an object. 2) Mass is measured by using a balance comparing a known amount of matter to an unknown amount of matter. Weight is measured on a scale.

What is water displacement?

Water Displacement. Full Screen. Volume is a measure of the amount of space an object takes up. When a cylinder is submerged in the water it pushes water out of the way. If you measure the amount the water level increases, you can find the volume of the water pushed out of the way.

What is a simple method of getting a correct reading of burette?

Answer: When the liquid is filled inside the burette,the uppermost layer of that liquid forms a concave surface and for getting a correct reading we should measure the lower tip of that concave upper surface and we should avoid the upper surface of that concave ,in order to avoid measurement mistakes.

How should a meniscus be read in a graduated cylinder?

To correctly read a graduated cylinder, the surface at the center of the meniscus must be read, not the top of the ring of liquid clinging to the wall of the graduated cylinder. For most liquids, this "center" will be the lowest point of the meniscus.

Whats is volume?

Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic metre.

Why is lower meniscus not taken for kmno4 during titration?

This is due to the reason that in case of coloured solutions lower meniscus is not visible clearly. In the case of colourless liquid, it is easy to observe the phase boundary, whether it is convex or concave hence in the colourless liquid lower meniscus may be considered.

Is walking good for torn meniscus?

If you have a meniscus tear, you may need: Crutches to walk until the swelling and pain get better. A brace to support and stabilize your knee. Physical therapy to help improve joint motion and leg strength.

Does the ocean have a meniscus?

The meniscus (plural: menisci, from the Greek for "crescent") is the curve in the upper surface of a liquid close to the surface of the container or another object, caused by surface tension. I'm playing a little fast and loose with the definition, but the surface of the ocean curves downward very slightly.