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KMHS_Chemistry
Chapter 10 Vocabulary: Thermochemistry
| Question | Answer |
|---|---|
| Calorie | The quantity of heat raises the temperature of 1 g of pure water. |
| Calorimeter | An apparatus for measuring heat changes. |
| Calorimetry | The measurement of heat changes. |
| Chemical Potential Energy | Energy stored within the structural units of units of chemical substances. |
| Energy | The capacity for doing work; it exists in several forms, including chemical, nuclear, electrical, radiant, mechanical, and thermal energies. |
| Endothermic Process | Heat absorbing process. |
| Exothermic Process | A heating dissipating process. |
| Enthalpy | The amount of heat that a substance has at a given temperature and pressure. |
| Heat | The energy that is transferred from one body to another because of a temperature difference. |
| Heat Capacity | The quantity of heat required to change an object's temperature by exactly 1 degree of C. |
| Heat of Combustion | The heat absorbed or released during a chemical reaction in which one mole of a substance is completely burned. |
| Heat of Reaction | The heat released or absorbed during a chemical reaction; equivalent to H, the change in enthalpy. |
| Hess's Law of Heat Summation | In going from a particular set of reactants to a particular sec of products, the enthalpy change is the same whether the reaction takes place or in a series of steps. |
| Joule | The SI unit of energy; 4.184 joules equal 1.000 calorie. |
| Law of Conservation of Energy | Energy is neither created or destroyed in an ordinary chemical or physical process. |
| Molar Heat of Fusion | The energy, in kilojoules, required to melt one mole of a solid. |
| Molar Heat of Vaporation | The energy, in kilojoules, required to vaporize one mole of a liquid. |
| Specific Heat Capacity | The amount of heat it takes to raise the temperature of 1g of the substance 1 degree C and is measured in J/(g x 6 degrees C) |
| Standard Heat of Formation | The change in enthalpy (H) for a reaction in which one mole of a compound is formed from its constituent elements. |
| Surroundings | The remainder of the universe that is outside the system. |
| System | Any part of the universe that attention is focused on. |
| Thermochemical Equation | A chemical equation that includes the amount of heat produced or absorbed during the reaction. |
| Thermochemistry | The study of heat changes in chemical reactions. |
| Universe | The totality of all existing things. |
Created by:
KellyBeck
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