3. Gas to Liquid Change : Condensation
If we cool steam (or water vapour) by lowering its temperature, it is converted into liquid water. In this case a gas (steam) changes into a liquid, so a change of state has taken place. The process of changing a gas (or vapour) to a liquid by cooling, is called condensation. So, when steam (or water vapour) changes into water on cooling, it is called condensation of steam (or condensation of water vapour). A change of state (gas to liquid) takes place during condensation. This happens as follows.
When a gas is cooled enough (by lowering its temperature), then its particles lose so much kinetic energy that they slow down, move closer together until they start being attracted to each other, and form a liquid. Please note that condensations the reverse of boiling (or vaporisation).
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3. 2. Liquid to Gas Change : Boiling (or Vaporisation)
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4. 2. Latent Heat of Vaporisation (Liquid to Gas Change)
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5. Effect of 'Heating' and 'Cooling' on a Saturated Solution
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6. Classification Of Matter As Solids, Liquids And Gases
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9. Why Solids, Liquids and Gases Have Different Properties
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13. 2. The Particles of Matter have Spaces Between Them
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15. 1. Solid to Liquid Change : Melting
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16. 3. Gas to Liquid Change : Condensation
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20. 1. Latent Heat of Fusion (Solid to Liquid Change)
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24. 1. The Particles of Matter are Very, Very Small
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26. 4. The Particles of Matter Attract Each Other
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28. 3. The Particles of Matter are Constantly Moving
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29. Characteristics of Particles of Matter
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30. 4. Liquid to Solid Change : Freezing
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31. Two More States of Matter : Plasma and Bose-Einstein Condensate
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38. The Common Unit Of Temperature and Si Unit Of Temperatre
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39. To Show That Solids and Liquids Cannot be Compressed but Gases Can be Compressed Easily
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44. To Show that Liquids do not have a Fixed Shape but they have a Fixed Volume
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45. To Show the Presence of Water Vapour in Air
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49. Gases Can be Liquefied by Applying Pressure and Lowering Temperature
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50. To Show that Gases do not have a Fixed Shape or a Fixed Volume
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