Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Unit 5 Vocabulary
| Term | Definition |
|---|---|
| Phase Diagram | A graph of pressure and temperature that shows the conditions under which a substance exists. |
| STP | Standard Temperature and Pressure |
| Triple Point | The temperature and pressure at which the solid, liquid, and gas phases co-exists. |
| Critical Point | Where substance indicates the critical temperature and critical pressure. |
| Molar Enthalpy of Fusion | The amount of energy required to melt one mole of a solid |
| Nonvolatile | Liquids that do not evaporate readily because of strong attractive forces between particles. |
| Deposition | The change of a gas directly to a solid. |
| Sublimation | The change of a solid directly to a gas |
| Kinetic molecular theory | Particles are in constant motion |
| Molar Enthalpy of Vaporization | The amount of energy as heat needed to vaporize one mole of a liquid. |
| ∆H | enthalpy of products - enthalpy of reactants |
| Hess' Law | Overall enthalpy change in a reaction is equal to the sum of the enthalpy changes for the individual steps in the process. |
| Endothermic | Heat energy is absorbed; products higher |
| Exothermic | Heat energy released; products lower |
| Enthalpy Change | using Hess' law; process equals the sum of the energy difference of products minus the sum of the energy difference of the reactants |
Created by:
barreironataly
Popular Chemistry sets