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2.2
| Term | Definition |
|---|---|
| energy | the ability to do work |
| chemical reaction | when one or more substances change to produce one or more different substances |
| reactants | on the left side of the equation; what will be arranged into a new compound |
| products | on the right side of the equation |
| metabolism | all of the chemical reactions that occur in an organism |
| activation energy | the amount of energy needed to start the reaction |
| catalysts | certain chemical reactions that reduce the amount of activation energy that is needed for a reaction to take place |
| enzyme | a protein or RNA molecule that speeds up a metabolism without being permanently destroyed or changed |
| redox reactions | electrons being transferred between atoms |
| oxidation reaction | reactant losing one or more electrons, thus becoming more positive in charge |
| reduction reaction | reactant gaining one or more electrons, thus becoming more negative in charge |