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20 Cards in this Set
- Front
- Back
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reaction mechanism
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sequence of steps molecules go through on changing from reactants to products
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chemical kinetics
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study of how chemical reaction rates change
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exothermic
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release energy
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endothermic
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absorb energy
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energy-neutral
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neither absorbs or releases energy
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activation energy
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amount of energy that must be availible to reactants before becoming products
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catalyst
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something that increases rate of reaction by lowering activation energy
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enzyme
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catalyst in living systems
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substrate
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reactant molecule that fits into pocket
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active site
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pocket on enzyme
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dynamic equilibrium
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rate of forward reaction equals rate of reverse
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Le Chatelier's Principle
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If you disturb a reaction at equilibrium, the reaction returns to equilibrium by shifting in such a direction as to partially undo the disturbance
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Ksp
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6.000 x 10^-19
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acid
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sour taste, red on litmus, eats metals to make H gas
Arrhenius definition: electrolyte that produces H30+ ions in water Bronsted-Lowry definition: anything that donates a proton |
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base
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bitter, dark blue on litmus, produced slippery aqueous solutions
Arrhenius definition: electrolyte that produces OH- ions in water Bronsted-Lowry definition: anything that accepts a proton |
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electrolyte
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aqeuous solution of a substance that conducts an electrical current and dissociates into water producing ions
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dissociation
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breaking apart to produce ions
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pH
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-log[H30+]
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buffer
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resists changes in pH
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conjugate base/conjugate acid
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makes up conjugate pair, what buffer is made up of
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