Viscosity

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Aashka Popat 1A
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Viscosity

Postby Aashka Popat 1A » Sun Nov 10, 2019 10:43 pm

What does it mean for a liquid to have a high viscosity?

Aman Sankineni 2L
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Re: Viscosity

Postby Aman Sankineni 2L » Sun Nov 10, 2019 10:44 pm

The viscosity of a fluid is a measure of its resistance to deformation at a given rate. Liquids with high viscosity have more of a resistance to deformation.

KarineKim2L
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Re: Viscosity

Postby KarineKim2L » Sun Nov 10, 2019 10:44 pm

This means that the intermolecular bonds are stronger, and thus the liquid is "thicker". It will not flow as well.

Anna Chen 1K
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Re: Viscosity

Postby Anna Chen 1K » Sun Nov 10, 2019 10:45 pm

When a liquid has high viscosity, it means there is a lot of friction between the adjacent layers of a liquid. This will make the liquid flow slowly.

005206171
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Re: Viscosity

Postby 005206171 » Sun Nov 10, 2019 10:48 pm

I like to think of viscosity as how easily a liquid flows. Something that has high vicosity, like molasses, has strong intermolecular forces. Something with high viscosity is also described as being really thick, like molasses. Water has lower viscosity and flows much easier than molasses because it has weaker intermolecular forces.

Max Madrzyk Dis 4G
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Re: Viscosity

Postby Max Madrzyk Dis 4G » Sun Nov 10, 2019 10:50 pm

The higher the viscosity the smoother the liquid flows so like honey would have lower viscosity than water.

ATingin_3I
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Re: Viscosity

Postby ATingin_3I » Sun Nov 10, 2019 11:52 pm

KarineKim1L wrote:This means that the intermolecular bonds are stronger, and thus the liquid is "thicker". It will not flow as well.

what are the differences between intermolecular and intramolecular forces

aishwarya_atmakuri
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Re: Viscosity

Postby aishwarya_atmakuri » Sun Nov 10, 2019 11:53 pm

A liquid has high viscosity when it has strong intermolecular forces so it tends to by sticky and slow-moving.

Keerthana Sivathasan 2E
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Re: Viscosity

Postby Keerthana Sivathasan 2E » Wed Nov 13, 2019 8:24 pm

Viscosity is the measure of resistance of a fluid to flow. A fluid that is highly viscous has a high resistance (like having more friction) and flows slower than a low-viscosity fluid. The easier a fluid moves, the lower the viscosity. Viscosity is expressed in units of the poise (mPa•s). Because a liquid can flow only if the molecules can move past one another with minimal resistance, strong intermolecular forces make it harder for molecules to move with respect to one another. Also, liquids consisting of long, flexible molecules tend to have higher viscosities than those composed of more spherical or shorter-chain molecules because it is easier for the longer molecules to become “tangled” with one another, making it more difficult for them to move past one another.

Esha Chawla 2E
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Re: Viscosity

Postby Esha Chawla 2E » Wed Nov 13, 2019 8:51 pm

ATingin_3I wrote:
KarineKim1L wrote:This means that the intermolecular bonds are stronger, and thus the liquid is "thicker". It will not flow as well.

what are the differences between intermolecular and intramolecular forces


Intermolecular forces are forces between two separate molecules. This includes, but is not limited to, forces such as London dispersion forces, dipole-dipole forces, and Hydrogen bonding.

On the other hand, intramolecular forces are forces within a given molecule. This includes, but is not limited to, ionic bonds, covalent bonds, etc.

Thus, the different lies in the prefix of the given word. "Inter" means between - thus it refers to interactions between compounds/molecules. On the other hand, "intra" means within - thus it refers to interactions within a compound/molecule.

brennayoung
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Re: Viscosity

Postby brennayoung » Sun Nov 17, 2019 8:11 pm

Is there any practical application to viscosity like do yall know if there are any formulas that factor in viscosity or is it more just a property of certain substances to be aware of in general knowledge?

Elizabeth Johnson 1I
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Re: Viscosity

Postby Elizabeth Johnson 1I » Sun Nov 17, 2019 9:41 pm

brennayoung wrote:Is there any practical application to viscosity like do yall know if there are any formulas that factor in viscosity or is it more just a property of certain substances to be aware of in general knowledge?


Yeah is this anything to bother with for the 2nd test?

Naren_Ramesh_4F
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Re: Viscosity

Postby Naren_Ramesh_4F » Mon Nov 18, 2019 1:52 pm

Elizabeth Johnson 1I wrote:
brennayoung wrote:Is there any practical application to viscosity like do yall know if there are any formulas that factor in viscosity or is it more just a property of certain substances to be aware of in general knowledge?


Yeah is this anything to bother with for the 2nd test?


I think it might be on the test because it was covered in his lecture.

805097738
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Re: Viscosity

Postby 805097738 » Fri Nov 22, 2019 8:39 am

Max Madrzyk Dis 4E wrote:The higher the viscosity the smoother the liquid flows so like honey would have lower viscosity than water.


I don't think this is correct.

Adelpha Chan 1B
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Re: Viscosity

Postby Adelpha Chan 1B » Tue Nov 26, 2019 4:07 pm

Aashka Popat 1A wrote:What does it mean for a liquid to have a high viscosity?

when a liquid has high viscosity, the molecules in the liquid exhibit strong intermolecular forces, resulting in a thicker liquid closer to the consistency of a solid.

Rebekah Alfred 1J
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Re: Viscosity

Postby Rebekah Alfred 1J » Tue Nov 26, 2019 4:17 pm

In lecture, we went over the example of 3 hydrocarbons at room temperature:
Pentane (C5H12) was a mobile fluid at room temperature.
Pentadecane (C15H32) was a viscous fluid at room temperature.
Octadecane (C18H35) was a waxy solid at room temperature.

In this example, it is clear how the number of electrons that a molecule has affects the viscosity.

simona_krasnegor_1C
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Re: Viscosity

Postby simona_krasnegor_1C » Fri Oct 23, 2020 1:54 pm

For me, when I think of high viscosity I think of things like honey and syrup. The viscosity is like the thickness, and depends on internal frictional force.

AliAsh 1H
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Re: Viscosity

Postby AliAsh 1H » Sun Nov 22, 2020 6:23 pm

I always think of viscosity in terms of water and honey. honey is very thick and isn't easily deformed, which means its particles are more tightly held together, Water is the opposite, which means its intramolecular forces arent as strong.

Susanna Givan 1L
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Re: Viscosity

Postby Susanna Givan 1L » Sun Nov 22, 2020 11:24 pm

How does visocity change as surface tension change?

Eve Gross-Sable 2B
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Re: Viscosity

Postby Eve Gross-Sable 2B » Sun Nov 22, 2020 11:28 pm

A high viscosity substance has high resistance to deformation due to strong intermolecular forces. This means it resists flow, so water is low viscosity.


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