To Study the Properties of a Solution
If we shake some sugar with water in a beaker, the sugar seems to disappear in water and we get a transparent sugar solution. The dissolved sugar particles cannot be seen even with a microscope, and the sugar does not settle down even on keeping the solution for quite some time. If we filter the sugar solution,the whole solution passes through the filter paper and no residue is left behind. The sweet taste of the sugar solution, however, shows that sugar is present in it. From these observations we conclude that sugar solution is a homogeneous mixture having the same composition throughout. Sugar solution is a true solution. In a true solution, the particles of the solute break up to such an extent that they disappear into the spaces between the solvent molecules. So, in a sugar solution, the sugar particles break up to such an extent that they disappear into the spaces between the water molecules. A sugar solution does not scatter a beam of light passing through it and render its path visible (because the sugar particles present in it are so small that they cannot reflect light rays falling on them). We will now state some of the properties of a true solution.
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Matter in Our Surroundings - Notes
1. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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3. 7. Metals are Solids at the Room Temperature
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4. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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6. 11. Metals Usually Have a Silver or Grey Colour
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7. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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11. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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13. Separation Of Mixture Of a Solid And a Liquids
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15. To Study the Properties of a Colloid
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19. To Study the Properties of a Compound of Iron and Sulphur
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20. 1. Separation by a Suitable Solvent
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21. 11. Non-Metals Have Many Different Colours.
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25. 6. Metals are Usually Strong. They Have High Tensile Strength.
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26. 3. Metals are Good Conductors of Heat and Electricity.
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30. To Distinguish a Colloid from a Solution
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31. 2. Separation by a Separating Funnel
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33. Experiment to Obtain Coloured Component (Dye) From Ink
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38. To Study the Properties of a Solution
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40. 1. Separation by Fractional Distillation
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42. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
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44. To Separate the Salt-Water Mixture (or Salt-Solution)
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45. Chemical Formula for daily use material
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50. To Study the Properties of a Suspension
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