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CHM152C
Ch. 13
| Question | Answer |
|---|---|
| Kinetics | the study of the factors that affect the speed of a reaction and the mechanism by which a reaction proceeds |
| half-life (t1/2) | The time required for the concentration of a reactant or the amount of a radioactive isotope to fall to one-half of its initial value. |
| activation energy | An energy barrier in a chemical reaction that must be overcome for the reactants to be converted into products. |
| reaction order | A value in the rate law that determines how the rate depends on the concentration of the reactants. |
| rate law | A relationship between the rate of a reaction and the concentration of the reactants. |
| Molecularity | The number of reactant particles involved in an elementary step. |
| elementary step | An individual step in a reaction mechanism. |
| reaction mechanism | A series of individual chemical steps by which an overall chemical reaction occurs. |
| collision theory | A model of chemical reactions in which a reaction occurs after a sufficiently energetic collision between two reactant molecules. |
| intermediate | species produced and consumed in a chemical reaction and doesn’t appear in the overall equation |
| transition state (activated complex) | A high-energy intermediate state between reactant and product. |
| catalyst | A substance that is not consumed in a chemical reaction, but increases the rate of the reaction by providing an alternate mechanism in which the rate-determining step has a smaller activation energy. |
Created by:
akatier23
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