Difference between suspensions, solutions and colloids

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Re: Difference between suspensions, solutions and colloids

Post by imeddy on Fri Sep 11, 2015 11:14 am


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Re: Difference between suspensions, solutions and colloids

Post by Aneesh Yadav on Thu Sep 10, 2015 3:09 pm


Hey! Its interesting!!! What a Face cyclops cyclops pirat

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Re: Difference between suspensions, solutions and colloids

Post by KIRTI on Thu Sep 10, 2015 1:22 pm

VK KUMAR wrote:
niicee...
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Re: Difference between suspensions, solutions and colloids

Post by VK KUMAR on Thu Sep 10, 2015 1:20 pm

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Re: Difference between suspensions, solutions and colloids

Post by VK KUMAR on Thu Sep 10, 2015 1:17 pm

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Re: Difference between suspensions, solutions and colloids

Post by KIRTI on Thu Sep 10, 2015 1:11 pm

Aneesh Yadav wrote: Cool Cool
what a nice way of learning... Razz Very Happy Smile
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Re: Difference between suspensions, solutions and colloids

Post by Aneesh Yadav on Thu Sep 10, 2015 5:55 am

Cool Cool
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Re: Difference between suspensions, solutions and colloids

Post by VK KUMAR on Wed Sep 09, 2015 9:03 pm

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Re: Difference between suspensions, solutions and colloids

Post by VK KUMAR on Wed Sep 09, 2015 9:01 pm

A EXACT DIFFERENCE BETWEEN SOLUTIONS , COLLOIDS , SISPENSIONS!!!
A solution is a combination of two or more substances which are misicible with each other. This can include two liquids such as water and ethanol (alcohol). It can include a solid solution in which some unit cells in a crystaline solid are different such as cobalt doped solid nickel. It could also include a mixture of ionic liquids such as a glass which contains both sodium and potassium randomly replacing each other.
A colloid is a dispersion of solid / liquid in a liquid in which the particles are so small that they do not settle out. As a result of Brownian motion the particles do not settle out. It is hard to draw a line between a colloidal "solution" and a suspension of nanoparticles.
A suspension is a combination of two or more substances which are not fully miscible with each other, for example a slurry of a clay mineral in water would be an example.
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Re: Difference between suspensions, solutions and colloids

Post by Aneesh Yadav on Wed Sep 09, 2015 4:17 pm

Jatin Tiger wrote:A colloid is a substance in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance. Sometimes the dispersed substance alone is called the colloid;[1] the term colloidal suspension refers unambiguously to the overall mixture (although a narrower sense of the word suspension is contradistinguished from colloids by larger particle size). Unlike a solution, whose solute and solvent constitute only one phase, a colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). To qualify as a colloid, the mixture must be one that does not settle or would take a very long time to settle appreciably.

The dispersed-phase particles have a diameter of between approximately 1 and 1000 nanometers.[2] Such particles are normally easily visible in an optical microscope, although at the smaller size range (r<250 nm), an ultramicroscope or an electron microscope may be required. Homogeneous mixtures with a dispersed phase in this size range may be called colloidal aerosols, colloidal emulsions, colloidal foams, colloidal dispersions, or hydrosols. The dispersed-phase particles or droplets are affected largely by the surface chemistry present in the colloid.

Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid. Other colloids may be opaque or have a slight color.

Colloidal suspensions are the subject of interface and colloid science. This field of study was introduced in 1861 by Scottish scientist Thomas Graham.

Its interesting and very nice explanations...!! cyclops cyclops pirat pirat
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Re: Difference between suspensions, solutions and colloids

Post by Jatin Tiger on Wed Sep 09, 2015 8:49 am

A colloid is a substance in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance. Sometimes the dispersed substance alone is called the colloid;[1] the term colloidal suspension refers unambiguously to the overall mixture (although a narrower sense of the word suspension is contradistinguished from colloids by larger particle size). Unlike a solution, whose solute and solvent constitute only one phase, a colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). To qualify as a colloid, the mixture must be one that does not settle or would take a very long time to settle appreciably.

The dispersed-phase particles have a diameter of between approximately 1 and 1000 nanometers.[2] Such particles are normally easily visible in an optical microscope, although at the smaller size range (r<250 nm), an ultramicroscope or an electron microscope may be required. Homogeneous mixtures with a dispersed phase in this size range may be called colloidal aerosols, colloidal emulsions, colloidal foams, colloidal dispersions, or hydrosols. The dispersed-phase particles or droplets are affected largely by the surface chemistry present in the colloid.

Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid. Other colloids may be opaque or have a slight color.

Colloidal suspensions are the subject of interface and colloid science. This field of study was introduced in 1861 by Scottish scientist Thomas Graham.
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Re: Difference between suspensions, solutions and colloids

Post by SACHIN TENDULKAR on Wed Sep 09, 2015 8:46 am

How light passing through a colloidal dispersion ?
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Re: Difference between suspensions, solutions and colloids

Post by akshaj on Wed Sep 09, 2015 8:40 am

Aneesh Yadav wrote:
akshaj wrote:Pure substance : Any substance which contains atoms or molecules of only that substance and nothing else.

Solution : Stable, homogeneous mixture, particles not visible with a microscope and cannot be separated by filtration, does not scatter light.

Colloid : Particles visible with a microscope, can be separated by filtration and scatters light.

Suspension : Unstable, heterogeneous, particles visible to the naked eye, sediments deposited



It is interesting Akshaj!!! keep it up! Twisted Evil Twisted Evil Twisted Evil


thank u aneesh Cool
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Re: Difference between suspensions, solutions and colloids

Post by Aneesh Yadav on Wed Sep 09, 2015 8:32 am

akshaj wrote:Pure substance : Any substance which contains atoms or molecules of only that substance and nothing else.

Solution : Stable, homogeneous mixture, particles not visible with a microscope and cannot be separated by filtration, does not scatter light.

Colloid : Particles visible with a microscope, can be separated by filtration and scatters light.

Suspension : Unstable, heterogeneous, particles visible to the naked eye, sediments deposited



It is interesting Akshaj!!! keep it up! Twisted Evil Twisted Evil Twisted Evil
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Re: Difference between suspensions, solutions and colloids

Post by akshaj on Wed Sep 09, 2015 8:29 am

Pure substance : Any substance which contains atoms or molecules of only that substance and nothing else.

Solution : Stable, homogeneous mixture, particles not visible with a microscope and cannot be separated by filtration, does not scatter light.

Colloid : Particles visible with a microscope, can be separated by filtration and scatters light.

Suspension : Unstable, heterogeneous, particles visible to the naked eye, sediments deposited


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Re: Difference between suspensions, solutions and colloids

Post by Aneesh Yadav on Tue Sep 08, 2015 7:40 pm

Here is the difference between solutions, suspensions ans colloids with the help of video....




A solution is always transparent, light passes through with no scattering from solute particles which are molecule in size. The solution is homogeneous and does not settle out. A solution cannot be filtered but can be separated using the process of distillation.

A suspension is cloudy and heterogeneous. The particles are larger than 10,000 Angstroms which allows them to be filtered. If a suspension is allowed to stand the particles will separate out.

A colloid is intermediate between a solution and a suspension. While a suspension will separate out a colloid will not. Colloids can be distinguished from solutions using the Tyndall effect. Light passing through a colloidal dispersion, such as smoky or foggy air, will be reflected by the larger particles and the light beam will be visible. pirat pirat study Cool Cool
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Difference between suspensions, solutions and colloids

Post by DAV Science Teacher on Tue Sep 08, 2015 5:29 pm

write the difference

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Re: Difference between suspensions, solutions and colloids

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