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    Definitions: Heat and Temperature 1

  1. Temperature
    Temperature is the measure of the hotness of a body. The SI unit of temperature is the kelvin (K).

  2. Thermometric Property
    Any physical property that changes measurably with temperature is called a thermometric property.

  3. Heat Capacity
    The heat capacity of an object is the heat energy needed to change its temperature by 1 K (1oC).

  4. Specific Heat Capacity
    The specific heat capacity (c) of a substance is the heat energy needed
    to change the temperature of one kilogram of that substance by one kelvin.

  5. The Unit of Specific Heat Capacity
    The unit of specific heat capacity is the joule per kilogram per kelvin (J kg-1 K-1)

  6. Latent Heat
    The latent heat (L) of an object is the heat energy needed to change its state without a change in temperature

  7. Specific Latent Heat
    The specific latent heat (l) of a substance is
    the amount of heat energy needed to change the state of one kilogram of that substance
    without a change in temperature.

  8. Specific Latent Heat of Fusion
    The specific latent heat of fusion of a substance
    is the amount of heat energy needed to change one kilogram of that substance
    from a solid to a liquid without a change in temperature.