Chem Test 1 Stack Word Scramble
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Term | Definition |
Thermochemistry | Study of the heat effects associated with chemical reactions |
Heat | Form of motion at the molecular level by which energy is transferred between materials |
Calorimetry | Quantitative study of heat: the measurement of how much heat is evolved or absorbed in chemical reactions |
Heat Capacity | Amount of heat needed to raise its temperature by one unit of temperature |
Molar Heat Capacity | Heat capacity per mole of a substance |
Specific Heat Capacity | Heat capacity per unit mass of material |
Enthalpy | Amount of heat absorbed |
State Property | Depends only on the state of the system and not on the path followed to reach that state |
Exothermic | Reaction in which heat is evolved |
Endothermic | Reaction in which heat is absorbed |
Hess's Law | When several chemical equations are added or subtracted to give an overall equation, additon or subtraction of the corresponding enthalpy changes gives the enthalpy change associated with the overall equation |
Standard Molar Enthalpy of Formation | Equals the enthalpy change when 1 mol of a species is formed in a standard state at a specified temperature from the most stable forms of the elements that constitute it |
Bond Enthalpies | Used to estimate standard enthalpies of gas-phase reactions |
Work | Increases a body's energy |
Pressure-Volume Work | Expansion of a system against, or its compression by, an external pressure |
1st Law of Thermodynamics | Change in internal energy of a system is the sum of the work done on it and the heat transferred to it |
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