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15 terms

Solid, Liquid, Gas Definitions

Just chemistry definitions.
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Absolute zero
-the temp. of -273.16 C (-459.69̊ F) ; the hypothetical point at which all molecular activity ceases
Condensation
-a reaction that causes a gas to phase into a liquid.
Deposition
-G to S (opposite)
-exothermic
Freezing
-temperatures below 32̊ F ; to harden into ice/change from a liquid to a solid form by loss of heat (congeal)
Fusion
-Phasing from a solid to a liquid
-"melting"
Gas
-indefinite volume
Ideal gas
-a gas composed of molecules on which no forces act except upon collision with one another and with the walls of the container in which the gas is enclosed; a gas that obeys the ideal gas law
Kinetic molecular theory
a) The gas consists of very small particles, all with non-zero mass.
b) The number of molecules is so large that statistical treatment can be applied.
c) These molecules are in constant, random motion. The rapidly moving particles constantly collide with the walls of the container
Liquid
-composed of atoms that move freely among themselves but do not tend to separate like those of gasses
Pressure
-the exertion of force upon a surface by an object; force per unit area
Solid
-composed of atoms that do not move freely among themselves, and are tightly compacted into one space
STP
-the temperature of -0 C and pressure of 1 atmosphere, usually take as the conditions when stating properties of gasses
Sublimation
-Phasing from a S to G
-exothermic
-Ex: Dry ice
Temperate
-moderate in respect to temperature; not subject to prolonged extremes of hot or cold weather
Vaporization
-to change or cause to change into vapor/gaseous state as a result of extreme heat
-Phasing from a liquid to a gas