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Why is the meniscus of water curved downwards whilst that of Mercury is curved upwards?
The meniscus of water curves downwards due to its adhesive properties, which cause water molecules to be more attracted to the polar surface of the container than to each other. This leads to a concave shape as the water molecules cling to the sides. In contrast, Mercury has strong cohesive forces between its molecules, which dominate over adhesive forces with the container, resulting in a convex meniscus as the mercury pulls itself together rather than spreading out.
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What is the curved line formed by a liquid?
The curved line formed by a liquid in a container is known as the meniscus. This curvature occurs due to surface tension and the adhesive forces between the liquid and the container's walls. In a concave meniscus, like that seen with water in a glass, the liquid curves upward at the edges, while a convex meniscus occurs with liquids like mercury. The meniscus is important for accurate measurements in scientific experiments.
Curved surface of a liquid?
Meniscus
What is the curved surface of a liquid in a graduated cylinder?
Meniscus.
Explain why the surface of water or mercury in a container is not flat but curved?
The surface of water or mercury in a container is curved due to the effects of surface tension and the interactions between the liquid and the container's walls. In the case of water, adhesion to the container can cause the liquid to rise slightly at the edges, creating a concave meniscus. Conversely, mercury, which has a stronger cohesive force than adhesive force, forms a convex meniscus, curving away from the container walls. This curvature minimizes the surface area of the liquid, balancing the forces acting upon it.
What is the curved line that forms when water is in a graduated cylinder?
This line is called the meniscus.
Mercury has its meniscus upward?
If the meniscus of mercury in a glass tube is curved upwards, it indicates that the adhesive forces between mercury and the glass are stronger than the cohesive forces within the mercury. This is due to the high cohesion and adhesive properties of mercury.
What is the curved surface at the top of a liquid?
The curved surface at the top of a liquid is called the meniscus. It forms due to surface tension, causing the liquid to either curve upwards (concave meniscus) or downwards (convex meniscus) at the edges where it meets the container.
What is the scientific name for the curved water surface above the rim of a glass?
The curve you see on top of a liquid in a cylinder is called the meniscus and is due to the difference between the attractive force between the liquid molecules themselves and between the liquid molecules and the wall of the cylinder, as well as capillary action. When the molecules of the liquid have a greater attraction to the cylinder wall than to themselves, the meniscus is concave and the surface of the liquid curved downwards. Water drawn up a narrow glass cylinder has a concave meniscus. When the molecules of the liquid have a greater attraction to themselves than to the cylinder wall, the meniscus is convex and curves upwards. Mercury in a glass thermometer or barometer has a convex meniscus.
What is the curved surface of a liquid called?
Meniscus
Why is mercury curved upward?
The meniscus (plural: menisci, from the Greek for "crescent") is the curve in the upper surface of a liquid to the surface of the container or another object. It can be either convex or concave. A convex meniscus occurs when the molecules have a stronger attraction to each other (cohesion) than to the material of the container (adhesion). This may be seen between mercury and glass in barometers and thermometers. Conversely, a concave meniscus occurs when the molecules of the liquid attract those of the container's, causing the surface of the liquid to cave downwards. This can be seen in a glass of water. One can over-fill a glass with mercury and produce a convex meniscus that rises above the top of the glass, due to the vacuum created with the airtight substance.
When reading a graduated cylinder you look at?
When you read a scale on the side of a container with a meniscus, such as a graduated cylinder or volumetric flask, it's important that the measurement accounts for the ... For mercury, take the measurement from the top of the meniscus. ...
What is the curved line formed by a liquid?
The curved line formed by a liquid in a container is known as the meniscus. This curvature occurs due to surface tension and the adhesive forces between the liquid and the container's walls. In a concave meniscus, like that seen with water in a glass, the liquid curves upward at the edges, while a convex meniscus occurs with liquids like mercury. The meniscus is important for accurate measurements in scientific experiments.
Curved surface of a liquid?
Meniscus
The curved surface of a liquid?
meniscus
What is the curved surface of the liquid?
Meniscus
What is a curved surface on a liquid?
meniscus
When does the meniscus of a liquid in a glass tube curve downward?
A meniscus is caused by surface tension and It curves down (concave) when the liquid adheres to the container more than to itself, like water and glass. Mercury clings more to itself than glass, so it is curved up (convex)
