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Bio 2.4, 2.5
| Term | Definition |
|---|---|
| Chemical Reaction | process by which substances change into different substances through the breaking and forming of chemical bonds |
| Reactant | substance that is changed by a chemical reaction |
| Product | substance formed by a chemical reaction |
| Bond Energy | Amount of energy needed to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms |
| Equilibrium | condition in which reactants and products of a chemical reaction are formed at the same rate. |
| Activation Energy | energy input necessary to initiate a chemical reaction |
| Exothermic | chemical reaction that yields a net release of energy in the form of heat |
| Endothermic | chemical reaction that requires a net input of energy |
| Catalyst | substance that decreases activation energy and increases reaction rate in a chemical reaction |
| Enzyme | protein that catalyzes chemical reactions for organisms |
| Substrate | reactant in a chemical reaction upon which an enzyme acts |