Chemistry - Solutions, Colloids & Suspensions.

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4 Terms

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Solutions

Homogeneous mixture of two or more substances,

Do not scatter light ( no Tyndall effect),

stable,

particle size is less than 1 nanometer (nm)

cannot be filtered

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Colloids

Heterogeneous mixture but appears homogeneous ,

stable,

particle size is between 1-100 nanometers (nm),

scatters light (shows Tyndall effect),

cannot be filtered.

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Suspensions

Heterogeneous mixture,

scatters light (shows Tyndall effect)

Can be filtered

unstable

particle size is greater than 100 nanometers (nm)

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Tyndall effect

Discovered by John Tyndall

The scattering of a beam of light by a medium containing suspended particles, is known as Tyndall effect.