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chapter 2 section 2
energy
Term | Definition |
---|---|
energy | the ability to do work |
chemical reaction | one or more substances change to produce one or more different substances |
reactant | are shown on the left side of the equation |
product | shown on the right side of the equation |
metabolism | the term used to describe all of the chemical reactions that occur in an organism |
activation energy | the large amount of energy needed to start the reaction |
catalyst | reduce the amount of activation energy that is needed for the reaction to take place |
enzyme | a protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed |
redox reaction | the reaction in which electrons are transferred between atoms - also called oxidation reduction reactions |
oxidation reaction | when a reactant loses an electron thus becoming more negative in charge |
reduction reaction | when a reactant gains one or more electrons thus becoming more negative in charge |