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For the work of fiction, see Surface Tension (short story). Continuum mechanics
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Surface tension [show]Scientists Newton · Stokes · Navier · Cauchy · Hooke · Bernoulli This box: view • talk • edit
Surface tension is a property of the surface of a liquid. It is what causes the surface portion of liquid to be attracted to another surface, such as that of another portion of liquid (as in connecting bits of water or as in a drop of Mercury that forms a cohesive ball).
Surface tension is caused by cohesion (the attraction of molecules to like molecules). Since the molecules on the surface of the liquid are not surrounded by like molecules on all sides, they are more attracted to their neighbors on the surface.
Applying Newtonian physics to the forces that arise due to surface tension accurately predicts many liquid behaviors that are so commonplace that most people take them for granted. Applying thermodynamics to those same forces further predicts other more subtle liquid behaviors.
Surface tension has the dimension of force per unit length, or of energy per unit area. The two are equivalent - but when referring to energy per unit of area, people use the term surface energy - which is a more general term in the sense that it applies also to solids and not just liquids.
In materials science, surface tension is used for either surface stress or surface free energy.
What else can I help you with?
The pull on the surface of the liquids that allow liquids to form drops when they fall?
It is surface tension.
Why are raindrops shaped like tear drops?
When first formed, raindrops are nearly perfect spheres which may be several inches in diameter. As they fall, air resistance causes them to flatten out and break into many small parts. Very small drops may remain spherical, but most will be irregular shapes. See the related link for photographs.
Why water drops that fall on a surface tend to form rounded drops or beads?
The inherent property of any substance is to aggregate together, which is caused by Van der Waals' forces. These forces cause the molecules to be held together and create surface tension, in the case of liquids. When you drop water onto a surface, the water molecules adhere together due to holding those forces and try to come closer. Geometrically, a sphere has the greatest surface area to volume ratio, which is also the most stable shape for liquids to conform into. Thus, you get rounded drops or beads.
Why falling drop of liquid is spherical?
Yes it is. Surface tension caused by hydrogen bonding within the water is the reason. Hydrogen bonding is caused by the strong polar nature of the water molecule. It's polarity means the positive end of one molecule is attracted to the negative end of another molecule.
What force of attraction is responsible for the formation of a thin film on the surface of water?
The attraction that causes water and other liquids to form drops and thin films is cohesion. The attraction between oppositely charges ions results in the formation of an ionic bond.
What liquids form spherical drops because of this property?
Liquids with high surface tension, such as water, form spherical drops due to this property. Surface tension is the cohesive force that causes molecules at the surface of a liquid to be drawn inward, creating a spherical shape to minimize surface area.
Liquids from spherical drops because of this property?
Surface tension is the property that causes liquids to form spherical drops. This is due to the molecules at the surface of the liquid being more attracted to each other than to the surrounding air, causing them to minimize surface area and form a sphere.
Why small water drops are spherical in shape?
Small water drops are spherical in shape due to surface tension. Surface tension is a property of liquids that causes them to minimize their surface area, resulting in a spherical shape for small droplets as it is the shape that has the lowest surface area. This is why small water drops tend to form perfect spherical shapes.
The pull on the surface of liquids that allow liquids to form drops when they fall are called?
The pull on the surface of liquids that allow liquids to form drops when they fall are called surface tension. This property is due to the cohesive forces between liquid molecules at the surface.
Why Mercury is spherical in shape liquid?
The reason mercury droplets are spherical is because they do easily wet other surfaces. For this reason, mercury forms spheres, which have the smallest possible ration of surface area to volume.
Do liquids that have higher tension produce drops that are flatter or more nearly sperical ttan liquids with lowersurface tension?
Surface tension causes molecules to hold to themselves more tightly. Therefore high surface tension liquids, like pure water, will form a taller drop and low surface tension substances, like oil, will spread out and be flat.
What are the example of surface tension?
the spherical water drops of a flower.
Why liquids drops are spherical?
If the drop is small enough, it is a perfect sphere. A sphere is the geometrical shape thathas the smallest surface area for its volume. The drop takes this shape because watermolecules tend to stick to each other. So, when not confined by a container, and withnothing around it to distort its shape, a very tiny water drop is perfectly round like aball because the water molecules are pulling inward toward each other.
Why does water form spherical drops on some surfaces?
Water forms spherical drops on hydrophobic surfaces because the molecules have a tendency to minimize contact with the surface due to surface tension. This shape reduces the surface area in contact with the surface, allowing the water droplet to bead up into a more stable and energetically favorable shape.
When working with a liquids a dash is two to three what?
Drops.
The pull on the surface of liquids that allows liquids to form drops when they fall?
cohesion/ cohesive forces
Why would water form nearly spherical drops onboard the space shuttle or an orbiting space station?
Its surface tension hold it in a logical shape (why is a bubble spherical?)
