| A | B |
| the symbol for entropy | S |
| the symbol for enthalpy | H |
| the symbol for free energy | G |
| energy term on the right side of a chemical equation | exothermic |
| energy term on the left side of a chemical equation | endothermic |
| what it means when delta G is negative | spontaneous |
| what it means when delta G is positive | non-spontaneous |
| entropy of the universe favors this | disorder |
| the substance or reaction that you are observing | system |
| everything else that you are not observing or that is not the system | surroundings |
| unit of energy in chemistry | Joule |
| unit of energy for food items | calorie |
| the amount of energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius | specific heat |
| amount of energy required to get a reaction to go forward | activation energy |
| amount of energy required to get a reaction to go backwards | reverse activation energy |
| Law of thermodynamics that says energy cannot be created nor destroyed | first law |
| Law of thermodynamics that says entropy in the universe is always increasing | second law |
| absolute unit of temperature | Kelvin |