Ap Flashcards
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| 9403947636 | Chemical Equilibrium | A state of balance in a chemical reaction where the rate of forward reaction is equal to the rate of reverse reaction (Rate Fwd. = Rate Rvs.) | 0 | |
| 9403949624 | Phase Equilibrium | A state of balance in phase changes for a substance where a substance is either melting at the same rate it is freezing, or a substance is boiling at the same rate it condenses. (Rate of Melting = Rate of Freezing) | 1 | |
| 9403956091 | Solution Equilibrium | A state of balance in an aqueous solution where solute dissolves at the same rate that it crystallizes (in other words a saturated solution) | 2 | |
| 9403960331 | Activation Energy | The energy necessary to start a chemical process | 3 | |
| 9403966155 | Potential Energy Diagram | A diagram used to show the transfer of heat energy between chemicals in a reaction. | 4 | |
| 9403969912 | Catalyst | A substance that can be added to a reaction to increase rxn. rate by lowering activation energy. It stays unchanged by the reaction itself and can be re-used | 5 | |
| 9403973383 | Activated Complex | This is the temporary high energy molecular arrangement of atoms that is observed between reactants and products. (this is the peak in energy of the reaction) | 6 | |
| 9403976414 | Enthalpy | Enthalpy is the change in heat energy during the course of a reaction usually abbreviated as ΔH | 7 | |
| 9403980490 | Entropy | Entropy is the measure of particle randomness or disorder. Higher amounts are always observed in gases abbreviated by ΔS | 8 | |
| 9403984253 | Le Chatelier's Principle | The idea that the equilibrium of a reaction can be shifted by placing stress on a reaction, forcing the reaction to compensate for the stress. | 9 | |
| 9403988508 | Collision Theory | The idea that chemical reactions are caused by particle collisions, and the rate of reactions is based on how frequent and effective those collisions are. | 10 | |
| 9403990686 | Spontaneous Chemical Reaction | If a reaction is spontaneous that means it will happen with little assistance on its own. Most spontaneous chemical reactions will be exothermic and have an increase in entropy ( - ΔH and + ΔS) | 11 |