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Why can a sewing needle can float on the surface water in a glass?

Yes if the surface tension of the water is not broken. If you are careful you can place a needle on the surface of the water in a glass. Also if you reduce the surface tension with detergent (just a very little is enough) the needle will sink because it's density is greater than that of the water. NO (if the surface tension of the water is broken, a needle cannot float on the surface of water. This is because the needle has higher density than water (density is mass divided by volume).


What is surface tension coefficient?

Surface tension coefficient, also known as surface tension, is the force acting on the surface of a liquid that causes it to behave like a stretched elastic membrane. It is a measure of the strength of the attractive forces between molecules at the surface of a liquid. The higher the surface tension, the more difficult it is to break the surface of the liquid.


What is surface tension in hydrocarbons?

Each liquid hydrocarbon has a different surface tension.


How can you test how much weight the surface tension of water can hold?

Small insects such can walk on water because their weight is not enough to penetrate the surface. A carefully placed small needle can be made to float on the surface of water even though it is several times as dense as water. If the surface is agitated to break up the surface tension, needle will quickly sink.


A consequence of the surface tension of water is what?

capillary action is a common consequence of surface tension.

Related Questions

What has surface tension greater than water?

Some examples of substances with greater surface tension than water include mercury and liquid metals like gallium. These substances have stronger intermolecular forces that result in a higher resistance to being broken apart at the surface.


How can you break the attachment of molecules in the surface tension?

The surface tension of water can be broken by adding dishwashing detergent to the water. This can be demonstrated by filling a bowl with water, then floating a needle in it. This may sound almost impossible, but it can be easily achieved by placing the needle on a tissue, then carefully floating it on the water. When the tissue sinks, the needle should remain on the surface. It is prevented from sinking by the water's surface tension. Carefully add one drop of dishwashing detergent, and the needle will sink. You can prove this was due to the surface tension being broken by trying to float the needle again. If you added enough detergent this should be impossible, as detergent acts as a wetting agent and breaks the surface tension.


What is the effect of sodium chloride on the surface tension of water?

The surface tension of water is increased for salted water.Sodium chloride increase the surface tension of water.


How do you break the surface tension?

Adding surfactants the surface tension decrease.


Does water have the highest surface tension?

No, mercury has a higher surface tension.


What makes a balloon pop when hit with a sharp object?

Well when a balloon gets struck with a sharp object, it puts a hole in it and the surface tension is broken. The surface tension on a balloon is maxed out on the sides where the material is thin.When you poke it there is no room for it too expand.


Why can a sewing needle can float on the surface water in a glass?

Yes if the surface tension of the water is not broken. If you are careful you can place a needle on the surface of the water in a glass. Also if you reduce the surface tension with detergent (just a very little is enough) the needle will sink because it's density is greater than that of the water. NO (if the surface tension of the water is broken, a needle cannot float on the surface of water. This is because the needle has higher density than water (density is mass divided by volume).


What is surface tension coefficient?

Surface tension coefficient, also known as surface tension, is the force acting on the surface of a liquid that causes it to behave like a stretched elastic membrane. It is a measure of the strength of the attractive forces between molecules at the surface of a liquid. The higher the surface tension, the more difficult it is to break the surface of the liquid.


What is a force that acts on particles at a liquids surface?

Surface tension is the force that acts on particles at a liquid's surface. It is caused by the cohesive forces between the liquid molecules, which creates a barrier that resists the penetration of external objects or forces. This force is responsible for phenomena such as capillary action and the formation of droplets.


Effect of Temperature on Surface Tension?

surface tension decreases with the increase of temperature


How does temperature affect surface tension?

As the temperature rises, surface tension decreases.


Is surface tension a solid liquid or gas?

Surface tension is a characteristic of liquids.