What does surface tension mean quizlet?
Surface Tension is defined as the. Force that acts on the surface of a liquid and tends to minimize the surface area. Water will bead up because. The surface tension is pulling it into a spherical shape, which has less surface area than other shapes.
What is surface tension simple definition?
Surface Tension: “The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.” The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.
What is surface tension in medical term?
Medical Definition of surface tension : the attractive force exerted upon the surface molecules of a liquid by the molecules beneath that tends to draw the surface molecules into the bulk of the liquid and makes the liquid assume the shape having the least surface area.
What is an example of surface tension quizlet?
Try filling a glass of water to the top. If you’re careful you can overfill the glass. Example 2 of surface tension. Putting many drops of water on a penny.
What is surface tension in biology?
Surface tension. The expression of intermolecular attraction at the surface of a liquid, in contact with air or another gas, a solid, or another immiscible liquid, tending to pull the molecules of the liquid inward from the surface; dimensional formula: mt-2.
What is surface tension and why does it occur?
The surface tension arises due to cohesive interactions between the molecules in the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each side. Molecules are pulling each other equally in all directions causing a net force of zero.
What is surface tension experiment?
Fill a bowl with water. Shake the black pepper onto the surface of the water (Notice how it stays afloat on the water? That is the surface tension holding the layer up) Take a toothpick and put the end into soap so that it coats the end. Gently touch the surface of the water with the toothpick.
What is the surface tension in philosophy?
The problem with surface tension in philosophy is that there is so much that we can not understand and are unable to understand. Bertrand Russell said, “The point of philosophy is to start with something so simple as not to seem worth stating, and to end with something so paradoxical that no one will believe it.”
What is surface tension and surfactant?
Surface tension is high or low based on how attracted the molecules in a given liquid are to each other. Surfactant molecules have a weak attraction to one another. When a surfactant is introduced to a liquid like water, some of the surfactant molecules migrate to the surface of the water.
What causes surface tension?
The surface tension arises due to cohesive interactions between the molecules in the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each side. As explained, the cohesive force between the molecules causes surface tension. The stronger the cohesive force, the stronger the surface tension.
How can an organism use surface tension?
surface tension of water helps creatures(mostly of insecta class such as water striders) to walk on water. . it also helps water to move up the xylem tissue of higher plants without breaking up.
What is surface tension and how does it work?
In physics, surface tension is a force present within the surface layer of a liquid that causes the layer to behave as an elastic sheet. It is the force that supports insects that walk on water, for example. Surface tension is caused by the attraction between the molecules of the liquid.
Which are the two factors that affect surface tension?
Temperature- the surface tension of a liquid decreases with increase in temperature.
What are the factors affecting surface tension?
Factors affecting surface tension. Impurities present in a liquid appreciably affect surface tension. A highly soluble substance like salt increases the surface tension whereas sparingly soluble substances like soap decreases the surface tension. The surface tension decreases with rise in temperature.
Which explanation best describes surface tension?
Surface tension is also viewed as the result of forces acting in the plane of the surface and tending to minimize its area . On this basis, surface tension is often expressed as an amount of force exerted in the surface perpendicular to a line of unit length. The unit then is newtons per metre, which is equivalent to joules per square metre.