Types of Solutions
We usually think that solutions are formed when solid substances are dissolved in liquids. Though most of the common solutions are made by dissolving solids in liquids, but this is not always so. In fact,solutions can be made by dissolving : solids in solids; solids in liquids; liquids in liquids ; gases in liquids;and gases in gases. Please remember that as long as the mixture is homogeneous, the term 'solution' applies to it. The various types of solutions are :
1. Solution of Solid in a Solid. Metal alloys are the solutions of solids in solids. For example, brass is a solution of zinc in copper. Brass is prepared by mixing molten zinc with molten copper and cooling their mixture.
2.Solution of Solid in a Liquid. This is the most common type of solutions. Sugar solution and salt solution are the solutions of solids in liquids. A solution of iodine in alcohol called 'tincture of iodine'is also a 'solid in a liquid' type of solution. This is because it contains a solid (iodine) dissolved in a liquid (alcohol).
3.Solution of Liquid in a Liquid. Vinegar is a solution of acetic acid (ethanoic acid) in water.It is a liquid in liquid type of solution.
4.Solution of Gas in a Liquid. Soda-water is a solution of carbon dioxide gas in water. It is a gas in a liquid type of solution.
5.Solution of Gas in a Gas. Air is a solution of gases like oxygen, argon, carbon dioxide and water vapour, etc.,in nitrogen gas. Nitrogen is the solvent in air and all other gases are solutes.
Notes
Matter in Our Surroundings - Notes
1. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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2. 11. Metals Usually Have a Silver or Grey Colour
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 6. Metals are Usually Strong. They Have High Tensile Strength.
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11. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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15. Chemical Formula for daily use material
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26. 4. Metals are Lustrous (or Shiny), and can be Polished.
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29. To Study the Properties of a Compound of Iron and Sulphur
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32. To Study the Properties of a Suspension
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36. To Study the Properties of a Solution
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37. 7. Metals are Solids at the Room Temperature
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39. Experiment to Obtain Coloured Component (Dye) From Ink
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42. To Separate a Mixture of Alcohol and Water
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43. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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46. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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49. 3. Metals are Good Conductors of Heat and Electricity.
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50. 8. Metals Generally Have High Melting Points and Boiling Points.
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