Solutions, Suspensions And Colloids
Before we discuss the solutions, suspensions and colloids in detail, we should know the meaning of two terms : solute and solvent. The 'substance which is dissolved' in a liquid to make a solution is called 'solute', and the 'liquid' in which solute is dissolved is known as'solvent'.For example, salt solution is made by dissolving salt in water, so in salt solution, 'salt' is the 'solute' and 'water' is the 'solvent'. Similarly,the substances like sugar, ammonium chloride, copper sulphate and urea, etc.,which are dissolved in water to make solutions are called 'solutes', whereas water is the 'solvent'. Usually, the substance present in lesser amount in a solution is considered the solute, and the substance present in greater amount in a solution isconsidered the solvent. Please note that the solute particles are also called 'dispersed particles' and solvents are also known as 'dispersion medium'. Solutions, suspensions and colloids differ in the size of solute particles (or dispersed particles), the size of particles being minimum in solutions and maximum in suspensions.
Though most of the common solutes are solids but even the liquids and gases can also be solutes.Water is the most common solvent. So, most of the solutions are those in which water is the solvent. Water is an aqueous solvent. The organic liquids like alcohol, acetone, carbon tetrachloride, carbon disulphide and benzene are called non-aqueous solvents. The solutions made by dissolving various solutes in water are called aqueous solutions. On the other hand, the solutions made by dissolving solutes in organic liquids are called non-aqueous solutions. We will now discuss the solutions, suspensions and colloids in detail, one by one. Let us start with the solutions.
Notes
Matter in Our Surroundings - Notes
2. 7. Metals are Solids at the Room Temperature
Show Notes
4. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
9. 11. Non-Metals Have Many Different Colours.
Show Notes
15. 8. Metals Generally Have High Melting Points and Boiling Points.
Show Notes
19. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
Show Notes
23. To Study the Properties of a Suspension
Show Notes
24. Chemical Formula for daily use material
Show Notes
25. Effect of Temperature and Pressure on Solubility
Show Notes
26. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
Show Notes
31. Pure Substances : Elements and Compounds
Show Notes
33. 3. Metals are Good Conductors of Heat and Electricity.
Show Notes
34. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
Show Notes
37. 1. Separation by a Suitable Solvent
Show Notes
39. Solutions, Suspensions And Colloids
Show Notes
46. Comparison Among the Properties of Metals and Non-Metals
Show Notes
47. Differences Between Mixtures and Compounds
Show Notes
50. Separation Of Mixture Of a Solid And a Liquids
Show Notes