Suspensions
We have just studied that the substances which are soluble in water (or any other liquid) form solutions. But those substances which are insoluble in water form suspensions.
A suspension is a heterogeneous mixture in which the small particles of a solid are spread throughout a liquid without dissolving in it. Some common examples of suspensions are : Chalk-water mixture, Muddy water, Milk of Magnesia, Sand particles suspended in water, and Flour in water. Chalk-water mixture is a suspension of fine chalk particles in water; muddy water is a suspension of soil particles in water; and milk of Magnesia is a suspension of magnesium hydroxide in water. Please note that solid particles and water remain separate in a suspension. The particles do not dissolve in water. We will now study the properties of a suspension.
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Matter in Our Surroundings - Notes
1. 11. Metals Usually Have a Silver or Grey Colour
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2. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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9. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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10. 1. Separation by a Suitable Solvent
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11. 6. Metals are Usually Strong. They Have High Tensile Strength.
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18. Chemical Formula for daily use material
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20. 4. Metals are Lustrous (or Shiny), and can be Polished.
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22. To Study the Properties of a Compound of Iron and Sulphur
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29. To Separate a Mixture of Alcohol and Water
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31. 3. Metals are Good Conductors of Heat and Electricity.
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32. To Study the Properties of a Solution
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33. 7. Metals are Solids at the Room Temperature
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34. To Study the Properties of a Colloid
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42. To Separate the Salt-Water Mixture (or Salt-Solution)
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43. To Study the Properties of a Suspension
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45. Experiment to Obtain Coloured Component (Dye) From Ink
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49. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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50. To Study the Properties of a Mixture of Iron and Sulphur
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