Now the resistance provided by the pipe to the water flow is viscosity. Similar to friction between moving solids, viscosity will determine the energy required to make a fluid flow.In physics, viscosity is often expressed using Isaac Newton's equation for fluids, which is similar to Newton's Most common fluids, called Newtonian fluids, have a constant viscosity. Viscosity is a measure of a fluid's resistance to flow. A graph is plotted between concentrations of various solutions on the x-axis and ŋsp/C on y axis. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances. Viscosity denotes opposition to flow. Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. When the intermolecular forces of attraction are strong within a liquid, there is a larger viscosity. As we know honey is thicker than water.
“What is viscosity in chemistry“. Answer to: What is viscosity in chemistry? It can also be thought of as a measure of a fluid’s thickness or its resistance to objects passing through it. However, in the case of non-Newtonian fluids, the interactions are quite bizarre and are always hard to model and understand. A sphere has a minimal surface area, for a given volume.For example, oil has a high viscosity, but when we put it in the car and heat it up, it becomes less viscous and thus flows smoothly through an engine and other parts of the car. Intrinsic viscosity is a limiting viscosity number when the concentration of the polymer solution approaches zero. 70 It is also the property of the liquid surface that resists force.Intuitively, it keeps a barrier between foreign materials and the liquid. It only takes a minute to sign up. Viscosity and surface tension, are dependent on molecular interactions.Surface tension is the amount of energy required to increase the surface of the liquid by unit area. That is more is the surface tension, more is the energy and thus to minimize energy the fluids assume the shape with the smallest surface area. There is a greater resistance as you increase the force, but it's a constant proportional increase. Measurement of the flow properties of a material expressed as its resistance to flow. An example of this phenomenon is imagining a race between two liquids down a windshield. Honey, mostly glucose and fructose (see image below) is a good example of a liquid which owes its viscosity to hydrogen bonding.Liquids containing long molecules are invariably very viscous. This is because the molecular chains get tangled up in each other like spaghetti—in order for the liquid to flow, the molecules must first unravel. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances. Now the resistance provided by the pipe to the water flow is viscosity. This is the reason behind the water droplets being spherical in shape. Viscosity is therefore defined as resistance to flow. Similar to friction between moving solids, viscosity will determine the energy required to make a fluid flow. Adopted or used LibreTexts for your course? As the molecules acquire more energy, they can escape from their mutual traction more readily. A classic example of a non-Newtonian fluid is While viscosity may seem of minor importance in daily life, it can actually be very important in many different fields. An example of this phenomenon is imagining a race between two liquids down a windshield. For example: The viscosity of a fluid is a measure of its resistance to deformation at a given rate. Viscosity results from the interaction, or friction, between molecules in a fluid. One of the most elementary ways is to allow a sphere, such as a metal ball, to drop through a fluid and time the fall of the metal ball: the slower the sphere falls, the greater the viscosity that is measured. [SEMATECH] The more viscous a liquid is, the greater is the applied force required to make it flow at a particular rate. Sign up to join this community.
Viscosity is an expression of the resistance to flow of a system under an applied stress. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. However, viscosity can also arise in between two fluids flowing at different velocities.The above phenomenon of viscosity is very much particular to liquid, to be precise Newtonian fluids. The resistance to such flow is called the Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. When the intermolecular forces of attraction are strong within a liquid, there is a larger viscosity. Higher the viscosity, slow will be the liquid flow. To understand about viscosity, we take example of some liquids like Honey and Water.
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