| A | B |
|---|
| absolute zero | the lowest possible temperature; the temperature at which all particle movement stops: -273C or 0 K |
| Avogadro's Law | gasses at the same temperature, pressure, & volume have the same number of molecules or particles |
| (normal) Boiling Point | the temperature at which the phase change between which liquid and gas occurs at 1 atmor 101.3 kPa; the temperature at which the vapor pressure of a liquid is equal to the atomospheric pressure |
| compound | pure substance composed of two or more different elements chemically combined |
| Cooling Curve | diagram showing phase changes for a substance as it loses energy and goes from gas phase all the way to a solid phase |
| Deposition | phase change from gas to solid |
| Energy | the capacity to do work |
| Element | pure substance composed of one species of atoms |
| Evaporation | phase change from liquid to gas |
| Extensive (property) | a physical property that depends on size sample or amount (ex: mass, liquid) |
| Heat | form of energy measured in Joules (J) |
| Heat of Fusion | energy required to change 1 g of a substance from a solid to a liquid |
| Heat of Vaporization | energy required to change 1 g of a substance froma liquid to a gas |
| Heating Curve | diagram showing phase changes of a substance as it gains energy and goes froma solid phase all the way to a gas phase |
| Heat Transfer | energy trasferred from from a substance with more (hotter) to a substance with less (cooler) |
| Intensive (Property) | a phisical property that does not depend on a sample size or amount (ex; boiling point, melting point, density) |
| Kinetic Energy | energy of motion: energy associated with a change in temperature |
| Kinetic Molecular Theory (KMT) | a model used to explain the behavior of gases in terms of motion of their particles |
| Lattice | the unique crystal structure associated with any given solid |
| Matter | anything that has mass and takes up space |
| Potential (AKA Physical) Energy | energy of position; energy assiciated with a phase change |
| Melting Point | the temperature at which a phase change between solid and liquid occurs |
| Mixture | two or more pure substances physically combined |
| Sublimation | phase change from solid to gas |
| Temperature | a measure of average kinetic energy |
| Vapor Pressure | the upward pressure of a vapor in equilibrium with its liquid |
