To Distinguish a Colloid from a Solution
We can distinguish between colloids (or colloidal solutions) and true solutions by using Tyndall effect as follows :
(i)The solution which scatters a beam of light passing through it and renders its path visible, will be a colloid (or colloidal solution).
(ii) The solution which does not scatter a beam of light passing through it and does not render its path visible, will be a true solution.
For example, a soap solution scatters a beam of light passing through it and renders its path visible therefore, soap solution is a colloid (or colloidal solution). On the other hand, a salt solution does not scatter a beam of light passing through it and does not render its path visible, therefore, salt solution is a true solution.
Notes
Matter in Our Surroundings - Notes
1. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
3. 7. Metals are Solids at the Room Temperature
Show Notes
4. The Case of a Liquid Solute Dissolved in a Liquid Solvent
Show Notes
6. 11. Metals Usually Have a Silver or Grey Colour
Show Notes
7. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
11. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
Show Notes
13. Separation Of Mixture Of a Solid And a Liquids
Show Notes
15. To Study the Properties of a Colloid
Show Notes
19. To Study the Properties of a Compound of Iron and Sulphur
Show Notes
20. 1. Separation by a Suitable Solvent
Show Notes
21. 11. Non-Metals Have Many Different Colours.
Show Notes
25. 6. Metals are Usually Strong. They Have High Tensile Strength.
Show Notes
26. 3. Metals are Good Conductors of Heat and Electricity.
Show Notes
30. 2. Separation by a Separating Funnel
Show Notes
31. To Distinguish a Colloid from a Solution
Show Notes
33. Experiment to Obtain Coloured Component (Dye) From Ink
Show Notes
38. To Study the Properties of a Solution
Show Notes
40. 1. Separation by Fractional Distillation
Show Notes
42. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
Show Notes
44. To Separate the Salt-Water Mixture (or Salt-Solution)
Show Notes
45. Chemical Formula for daily use material
Show Notes
50. To Study the Properties of a Suspension
Show Notes
