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
1. 11. Metals Usually Have a Silver or Grey Colour
Show Notes
2. The Case of a Liquid Solute Dissolved in a Liquid Solvent
Show Notes
8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
9. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
10. 1. Separation by a Suitable Solvent
Show Notes
11. 6. Metals are Usually Strong. They Have High Tensile Strength.
Show Notes
18. Chemical Formula for daily use material
Show Notes
20. 4. Metals are Lustrous (or Shiny), and can be Polished.
Show Notes
22. To Study the Properties of a Compound of Iron and Sulphur
Show Notes
29. To Separate a Mixture of Alcohol and Water
Show Notes
31. 3. Metals are Good Conductors of Heat and Electricity.
Show Notes
32. To Study the Properties of a Solution
Show Notes
33. 7. Metals are Solids at the Room Temperature
Show Notes
34. To Study the Properties of a Colloid
Show Notes
42. To Separate the Salt-Water Mixture (or Salt-Solution)
Show Notes
43. To Study the Properties of a Suspension
Show Notes
45. Experiment to Obtain Coloured Component (Dye) From Ink
Show Notes
49. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
Show Notes
50. To Study the Properties of a Mixture of Iron and Sulphur
Show Notes
