chemistry ppt

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chemistry ppt

  1. 1. By-Kunal Yadav 9th - C
  2. 2. Evaporation :-The process of a liquid changing into vapour even below its boiling point is called evaporation.
  3. 3. Temperature Surface area Humidity Wind speed
  4. 4. The rate of evaporation increasing the temperature of the liquid.  The rate of evaporation of a liquid can be increased by heating it.
  5. 5. The rate of evaporation increases on increasing the surface area on the liquid. The rate of evaporation can be increased by increasing the surface of the liquid.
  6. 6. When the humidity of air is low , then the rate of evaporation is high, and water evaporates more readily. When the humidity of air is high, then the rate of evaporation is low, and water evaporates very slowly .
  7. 7. The rate of evaporation of a liquid increases with increasing wind speed.

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