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Ch 1 grade 9 Recap

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  • Name one substances which can be easily be changed from one state to other by heating or cooling ?
    Water
  • Define Latent heat of Vaporization?
    The amount of Heat energy required to convert l kg liquid into gas
  • Value of Latent Heat of fusion of Ice is ----------------
    80 cal/gm or 3.34 x 10 5 J/Kg
  • Give two examples for substances which undergo Sublimation ?
    Camphor, Dry ice
  • Define Latent heat of Fusion ?
    Heat energy required to convert 1kg of solid into liquid .
  • What do you mean by Latent Heat ?
    The heat energy required to change the state of substances.
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