<meta http-equiv="refresh" content="1; url=/nojavascript/"> Suspensions ( Study Aids ) | Chemistry | CK-12 Foundation
Dismiss
Skip Navigation

Suspensions

%
Best Score
Practice Suspensions
Practice
Best Score
%
Practice Now
Suspensions and Colloids
 0  0  0

Feel free to modify and personalize this study guide by clicking "Customize."

Suspensions

If you mix dirt in water, the water may become turbid. Is this a solution?

A suspension is a heterogeneous mixture in which some of the particles settle out of the mixture upon standing. The particles of a suspension are much larger than those of a solution. How does this relate to the dispersion medium? Can the dispersed particles be separated from the dispersion medium?

Which of the following are aqueous suspensions: milk, sweetened iced tea, water-based paint, mayonnaise

You can find more information on suspensions and check your answers here.

Colloids

A colloid is a heterogeneous mixture whose particle size is between those of a solution and a suspension. The particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas. Do colloids separate on standing?

The dispersed particles of a colloid can't be separated by filtration, but they scatter light due to their size – a phenomenon called the Tyndall effect! You've probably seen this effect in action (as shown below) when light hits a fog, smoke, or a dusty section of air:

The Tyndall effect allows sunlight to be seen as it passes through a fine mist

License: CC BY-NC 3.0

[Figure1]

Another property of a colloidal system is the Brownian motion. What is the Brownian motion?

Which of the following are examples of colloids: mud, smoke, cheese, chocolate syrup in milk, marshmallows, sweetened iced tea, whipped cream

Emulsions are a particular class of colloids and are colloidal dispersions of a liquid in either a liquid or a solid. What needs to be present to create a stable emulsion? What acts as an emulsifying agent between grease and water?

To find more info on colloids and to check your answers, click here.

Image Attributions

  1. [1]^ License: CC BY-NC 3.0

Reviews

Email Verified
Well done! You've successfully verified the email address .
OK
Please wait...
Please wait...
ShareThis Copy and Paste

Original text