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17 Cards in this Set

  • Front
  • Back
The quantity of heat it takes to change a liquid to gas without raising its temperature is called __ __ _____.
heat of vaporization
The heat of vaporization for water is _____.
540 calories/gram
Molecules carry a great deal of ___ ___ with them when they leave during evaporation.
thermal energy
Give an example of thermal energy leaving during evaporation.
When you sweat, your body cools because the sweat evaporates and takes energy with it.
The process of a gas changing into a liquid is called ____.
The temperature has to _____ in order for condensation to occur.
drop or decrease
Water vapor condenses at a faster rate when the air is full of _____ than when the air is dry.
When the amount of water evaporating equals the amount condensing, it is called the ____ _____.
saturation point
The first mechanical cooling system was designed by ___.
Dr. Gorrie
The most important component of a refrigerator is the _____.
The _____ is the fluid used to transfer thermal energy throughout the refrigerator.
The ______ compresses the refrigerant to a very high pressure.
What part of the refrigerator takes the thermal energy and ?
The winding tube in the refrigerator drops the pressure on the liquid - it is called the ___.
Changing a solid to a gas (skipping the liquid state) is called ____.
Give an example of sublimation.
dry ice (carbon dioxide)
The special state of matter that exists where temperatures are too high for matter in its ordinary state is called ______.