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2-2 Energy
term | definition |
---|---|
energy | ability to do work and cause change |
chemical reaction | one or more substances change to produce one or more different substances |
reactant | elements and compounds that change in some way (react) during a chemical reaction |
product | elements and compounds that instiate a chemical reaction |
metabolism | describes all of the chemical reactions that occur in an organism |
activation energy | amount of energy needed to start a chemical reaction |
catalyst | chemical substances that reduce the amount of activation energy that is needed for a reaction to take place |
enzyme | protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed |
redox reaction | reactions in which electrons are transferred between atoms (oxidation reduction reactions) 2 types >> |
oxidation reaction | reactant loses one or more electrons thus becoming more positive in charge |
reduction reaction | reactant gains one or more electrons, thus becoming more negative in charge |