Colloids
A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions. The size of solute particles in a colloid is bigger than that of a true solution but smaller than those of a suspension. Though colloids appear to be homogeneous to us but actually they are found to be heterogeneous when observed through a high power microscope. So, a colloid is not a true solution. Some of the examples of colloids (or colloidal solutions) are : Soap solution, Starch solution, Milk, Ink, Blood, Jelly and Solutions of synthetic detergents. Colloids are also known as colloidal solutions.
Notes
Matter in Our Surroundings - Notes
3. 7. Metals are Solids at the Room Temperature
Show Notes
4. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
7. 11. Non-Metals Have Many Different Colours.
Show Notes
10. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
17. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
Show Notes
18. 8. Metals Generally Have High Melting Points and Boiling Points.
Show Notes
24. To Study the Properties of a Suspension
Show Notes
26. Pure Substances : Elements and Compounds
Show Notes
28. Effect of Temperature and Pressure on Solubility
Show Notes
29. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
Show Notes
33. To Study the Properties of a Solution
Show Notes
35. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
Show Notes
36. Separation of Mixture Of Two Solids
Show Notes
37. To Separate the Salt-Water Mixture (or Salt-Solution)
Show Notes
38. 1. Separation by Fractional Distillation
Show Notes
39. Chemical Formula for daily use material
Show Notes
43. Solutions, Suspensions And Colloids
Show Notes
45. 1. Separation by a Suitable Solvent
Show Notes
47. Separation Of Mixture Of a Solid And a Liquids
Show Notes
48. 2. Separation by a Separating Funnel
Show Notes
49. 6. Metals are Usually Strong. They Have High Tensile Strength.
Show Notes