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Chemistry Vocabs
| Question | Answer |
|---|---|
| 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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