Term
| describes the speed of change over an interval of time |
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Definition
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Term
| what is the rate of chemical change usually expressed as? |
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Definition
| the amount of reactant changing per unit time |
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Term
| atoms, ions, and molecules can react to form products when they collide, provided that the particles have enough kinetic energy |
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Definition
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Term
| the minimum energy colliding particles must have in order to react |
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Definition
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Term
| an unstable arrangement of atoms that exists momentarily at the peak of the activation-energy barrier; an intermediate or transitional structure formed during the course of reaction |
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Definition
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Term
| what does the rate of chemical reaction depend on? |
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Definition
| temperature, concentration, particle size, and the use of a catalyst |
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Term
| a substance that interferes with the action of a catalyst |
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Definition
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Term
| a term sometimes used to refer to the activated complex |
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Definition
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Term
| what can the time be in a rate of reaction? |
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Definition
| anything from a second to a century and more |
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Term
| what happens when particles don't have enough kinetic energy and hit each other? |
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Definition
| they just bounce off each other |
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Term
| what is the average life of an activated complex? |
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Definition
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Term
| do bonds have to be broken for an activated complex to occur |
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Definition
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Term
| a term sometimes used to refer to the activated complex |
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Definition
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Term
| what are four things that affect the rate of a chemical reaction? |
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Definition
| temperature, concentration, partical size(surface area), and the use of a catalyst |
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Term
| what does a rise in temperature usually do to the rate of reaction? |
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Definition
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Term
| what does a higher concentration of particles do to the rate of reaction? |
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Definition
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Term
| which particle will produce a higher rate of reaction: a smaller or larger particle? |
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Definition
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Term
| how can you increase the surface area of particles |
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Definition
| dissolve them in water to seperate them |
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Term
| what does a catalyst do to a rate of reaction? |
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Definition
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Term
| what does a catalyst do to the activation energy of a reaction? |
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Definition
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Term
| what are examples of catalysts? |
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Definition
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Term
| what does an inhibitor do? |
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Definition
| decrease the amount of functional catalyst |
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Term
| what does an inhibitor do to the rate of reaction when a catlyst is present |
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Definition
| significantly lower or stop the rate of reaction |
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