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
2. 7. Metals are Solids at the Room Temperature
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4. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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8. 11. Non-Metals Have Many Different Colours.
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9. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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15. 8. Metals Generally Have High Melting Points and Boiling Points.
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19. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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23. Chemical Formula for daily use material
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24. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
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25. To Study the Properties of a Suspension
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26. Effect of Temperature and Pressure on Solubility
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31. Pure Substances : Elements and Compounds
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32. 3. Metals are Good Conductors of Heat and Electricity.
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33. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
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37. 1. Separation by a Suitable Solvent
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38. Solutions, Suspensions And Colloids
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46. Differences Between Mixtures and Compounds
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49. To Separate the Salt-Water Mixture (or Salt-Solution)
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