The freezing point of substances:
A) Is the change of state of a substance from a liquid to a solid at a given pressure and temperature when heat is removed.
B) Is 32C.
C) Is 0F.
D) Never considers pressures or temperatures.
[Ques. 2] The melting point of solid materials:
A) Is 212F.
B) Is 100C.
C) Is the change of state of a substance from a solid to a liquid at a given pressure and temperature when heat is added.
D) Never considers pressures or temperatures.
[Ques. 3] Specific gravity is defined as:
A) The time element of inertia in which a specific amount of mass times the distance can be moved.
B) The force of gravity applied to a cubic foot of a mass.
C) The ratio of mass per cubic foot acting upon a given mass.
D) The ratio of the density of a material as compared to a common material.
[Ques. 4] Specific volume can be described using which of the following units?
A) Pounds per square foot B) Pounds per cubic foot
C) Ounces per cubic inch D) Cubic feet per pound
[Ques. 5] The molecules of gases have:
A) Lower levels of energy than solids or liquids due to molecular instability.
B) Higher levels of energy than solids or liquids only when exposed to temperature changes.
C) Higher energy levels than solids or liquids.
D) The same levels of energy as solids and liquids when contained.
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