(chem) chp. 13 vocab
About this set
Created by:
hopelynn11 on November 21, 2009
Log in to favorite or report as inappropriate.
Order by
19 terms
Terms | Definitions |
|---|---|
 melting point | for a crystalline solid, the temperature at which the forces holding a crystal lattice together are broken and it becomes a liquid |
| unit cell | the smallest arrangement of connected points that can be repeated in three directions to form a crystal lattice |
| condensation | the energy-releasing process by which a gas or vapor becomes a liquid |
| viscosity | a measure of the resistance of a liquid to flow, which is affected by the size and shape of particles, and generally increases as the temperature decreases and as intermolecular forces increase |
| temperature | a measure of the average kinetic energy of the particles in a sample of matter |
| amorphous solid | a solid in which particles are not arranged in a regular, repeated pattern; often is formed when molten material cools too quickly to form crystals |
| triple point | the point on a phase diagram representing the temperature and pressure at which the three phases of a substance (solid, liquid, and gas) can coexist |
| kinetic molecular theory | explains the properties of gases in terms of the energy, size, and motion of their particles |
| elastic collision | describes a collision in which kinetic energy may be transferred between the colliding particles but the total kinetic energy of the two particles remains the same |
| boiling point | the temperature at which a liquid's vapor pressure is equal to the external or atmospheric pressure |
| phase diagram | a graph of pressure versus temperature that shows which phase a substance exists in under different conditions of temperature and pressure |
| freezing point | the temperature in which a liquid is converted into a crystalline solid |
| deposition | the energy-releasing process by which a substance changes from a gas or vapor to a solid without first becoming a liquid |
| evaporation | the process in which vaporization occurs only at the surface of a liquid |
| vaporization | the energy-requiring process by which a liquid changes to a gas or vapor |
| pressure | force applied per unit area |
| dispersion forces | the weak forces resulting from temporary shifts in the density of electrons in electron clouds |
| sublimation | the energy-requiring process by which a solid changes directly into a gas without first becoming a liquid |
| crystaline solid | a solid whose atoms, ions, or molecules are arranged in an orderly, geometric three-dimensional structure; can be classified by shape and by composition |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.