A characteristic of water vapor, but not other states of water, is:
A) Small changes in the volume of water occur with changes in temperature.
B) Water molecules move about freely.
C) Water exerts equal pressure on the sides of a container in which it is placed.
D) Water vapor is compressible.
[Ques. 2] The three states of matter represent:
A) Diverse levels of molecular energy within a material or substance.
B) The amount of work a material can accomplish.
C) Total velocity pressure, static pressure, molecular pressure.
D) The levels of chemical energy, photovoltaic energy, and radiation within a substance.
[Ques. 3] According to the law of conservation, when matter changes state its ________ remains the same.
A) mass B) energy C) volume D) temperature
[Ques. 4] The law of conservation of matter states that:
A) Only green matter should be used for installing HVACR systems.
B) Matter should not be wasted.
C) Matter cannot be created or destroyed.
D) An equal amount of matter is always created somewhere whenever matter is destroyed.
[Ques. 5] What does a refrigeration system do with the heat in the refrigerated area?
A) It overcomes the heat with a counterbalancing quantity of cold.
B) It moves the heat from the refrigerated area to another area.
C) Nothingrefrigeration is about cold, not heat.
D) It chemically absorbs the heat.
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