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Chemistry Vocabs

QuestionAnswer
Condensation an exothermic process in which a vapor or a gas changes into the liquid phase; the potential energy of the substance decreases during this constant temperature process; the reverse of the vaporization process
Deposition the process in which a gas changes directly into a solid; the reverse of sublimation
Freezing the constant temperature process in which particles in the liquid phase lose energy and change into the solid phase; also known as solidification; the reverse of the melting process
Fusion the constant temperature process in which particles in the solid phase gain enough energy to break away into the liquid phase; also known as melting; the reverse of the freezing process
Gaseous Phase a phase of matter without definite shape or volume
Heat energy transferred from one substance to another; measured in units of calories or joules
Heat of Fusion the amount of heat needed to convert a unit mass of substance from a solid to a liquid at its melting point
Heat of Vaporization the amount of heat needed to convert a unit mass of a substance from a liquid to a vapor at its boiling point
Kinetic Molecular Theory a theory used to explain the behavior of gases in terms of the motion of their particles
Liquid Phase a phase of matter having definite volume but no definite shape (takes the shape of its container)
Solid Phase a phase of matter having a definite shape and volume; particles in this phase have a definite crystalline arrangement
Sublimation the process in which a solid changes directly into a gas; the reverse of deposition
Temperature the measure of the average kinetic energy of substance's particles
Vaporization the constant temperature process in which particles in the liquid phase gain enough energy to break away into the gaseous phase
Homogeneous a substance in which the particles are uniformly
Heterogeneous a mixture in which the substances are not uniformly mixed
Pure Substance a compound or an element; a material in which the composition is the same throughout
Elements substances that cannot be broken down or decomposed into simpler substances by chemical means
Compound a substance composed of two or more elements that are chemically combined in definite proportion by mass
Mixture combinations of two or more pure substances that can be separated by physical means
immiscible two liquids that are not soluble in each other
miscible Liquids that mix with each other
Created by: scheung95
 

 



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