AP Unit 3.Thermochemistry Flashcards
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| 5264027383 | Energy | the ability to do work | 0 | |
| 5264028071 | Potential energy | The energy stored in chemical bonds | 1 | |
| 5264030310 | Kinetic energy | energy of motion, proportional to Kelvin temperature |  | 2 |
| 5264034942 | Law of conservation of energy | energy is neither created nor destroyed in a chemical change, but is simply changed from one form to another | 3 | |
| 5264037187 | First law of thermodynamics | the energy of the universe is constant | 4 | |
| 5264037690 | Heat (q) | an exchange of thermal energy when two systems are at different temperatures | 5 | |
| 5264039333 | Temperature | A measure of the average kinetic energy of the particles in a sample of matter. |  | 6 |
| 5264040353 | Enthalpy (ΔH) | change in energy of a system. Variable = H | 7 | |
| 5264042816 | Enthalpy of a reaction (ΔHrxn) | The quantity of energy released or absorbed as heat during a chemical reaction at constant pressure | 8 | |
| 5264043953 | Enthalpy of combustion (ΔHcomb) | enthalpy change for the complete burning of one mole of a substance | 9 | |
| 5264044604 | Enthalpy of formation (ΔHf) | enthalpy change when one mole of a compound is formed from its elements in their standard states | 10 | |
| 5264045980 | Enthalpy of fusion (ΔHfus) | change in enthalpy resulting from heating one mole of a substance to change its state from a solid to a liquid. | 11 | |
| 5264049943 | Enthalpy of vaporization (ΔHvap) | The enthalpy change that occurs when one mole of a pure liquid is vaporised at its boiling point | 12 | |
| 5264050443 | System | area of the universe we are focusing on (ie. the experiment) | 13 | |
| 5264051127 | Surroundings | anything and everything outside the system | 14 | |
| 5264051557 | Endothermic | +∆H (energy flows in, energy is a reactant) | 15 | |
| 5264053445 | Exothermic | -∆H (energy flows out, energy is a product) | 16 | |
| 5264054456 | Entropy (S) | measure of the disorder (dispersal) or matter in a system | 17 | |
| 5264055629 | Gibbs Free energy | amount of energy available to do work, determines if a reaction is thermodynamically favored | 18 | |
| 5264058536 | Thermodynamics | the study of energy and its interconversions | 19 | |
| 5264059763 | Work | w = PΔV | 20 | |
| 5264060186 | Standard conditions | 1 atm, 298 K | 21 |