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2.4-2.5 Terms
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 |
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 | Proteins that catalyzes chemical reaction for organisms. |
Substrate | Reactant in a chemical reaction upon which an enzyme acts. |