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. 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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10. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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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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24. To Study the Properties of a Compound of Iron and Sulphur
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28. 4. Metals are Lustrous (or Shiny), and can be Polished.
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30. To Separate a Mixture of Alcohol and Water
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31. To Study the Properties of a Solution
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34. 7. Metals are Solids at the Room Temperature
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36. To Separate the Salt-Water Mixture (or Salt-Solution)
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38. To Study the Properties of a Suspension
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46. Separation of Mixture Of Two Solids
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49. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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50. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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