Heat and Thermodynamics
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Created by:
carolinemcguire on March 26, 2012
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16 terms
Terms | Definitions |
|---|---|
 Kinetic Molecular Theory | All matter is made up of molecules that are in constant motion |
| Thermal Energy | Aka heat, overall energy associated with the motions of particles that make up an object |
| Temperature | Average kinetic energy of all particles of an object |
| Thermal Equilibrium | State at which 2 objects are in contact gain the same temperature there is an equal rate of energy flow between them/Heat lost = heat gained |
| Thermometer | Device that measures temperature |
| Conduction | Transfer of KE when particles collide that are in contact |
| Convection | Motion of fluids or gases caused by temperature differences |
| Radiation | Transfer of energy by electromagnetic waves |
| Heat | Thermal energy that flows between two objects as a result of a difference of temp |
| Constant | In a closed, isolated system, the total energy of the system remains _____ |
| Specific Heat Capacity | Amount of energy needed to change the temperature of 1 kg of a substance by 1 degree C |
| Calorimeter | Device used to measure changes in heat or thermal energy |
| Phase Changes | The physical change of a substance from one state to another at constant temperature and pressure |
| Potential Energy | Phase changes involve_____________ between particles |
| Heat of Fusion (Hf) | Energy needed to melt or freeze 1 kg of a substance |
| Heat of Vaporization (Hv) | Energy needed to boil or condense 1 kg of a substance |
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