Chem-Module 14
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Reaction Rate | The rate of change of a product in a chemical reaction
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| In order to react, chemicals must ______ with one another so that their electrons can either be transferred or rearranged | collide
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| Higher temperature increases chemical reaction rate because the reactant molecules (or atoms) move _______, increasing the chance for a collision. | faster
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| Decreasing concentration __________ the chemical reaction rate because there are fewer reactant molecules (or atoms) to collide with one another. | decreases
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| Increasing the surface area of a reactant ________ reaction rate because the molecules (or atoms) of the reactant can more easily mingle with the molecules (or atoms) of the other reactants. | increases
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| Rate equation | R=k[A]x[B]y
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| k= | Rate constant
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| x+y= | overall order of the chemical reaction
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| Sometimes, the rate of a chemical reaction will be ____________ by the concentration o one of its reactants. In this case, the exponent of the rate equation is ______ for that reactant. | unaffected, zero
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| The reaction rate order for a chemical equation must be determined experimentally: they are _______ equal to the stoichiometric coefficients in the chemical equation. | NOT
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| Chemical reactions never actually ______. They just keep getting slower and slower until they proceed imperceptibility slowly.Thus, for any chemical reaction, no matte how long you wait, there will always be some reactants left. | finish
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| The temperature dependence of reaction rate is determined by the variation of the __________ with temperature | rate constant
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| The rate of many chemical reaction _______ for every ____ C increase in temperature | doubles, 10
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| _______ speed up the reaction rate without actually getting used up in the chemical reaction. | Catalysts
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| Decreasing the activation energy of a reaction ________ its rate | increases
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| Catalysts speed up reaction rates by _______ the activation energy of the reaction. | lowering
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| Heterogeneous Catalysts | Catalysts that are in a different phase than the reactants
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| Homogenous catalysts | Catalysts that have the same phase as at least one of the reactants
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| Reaction mechanism | A series of chemical equations that tells you the step-by-step process by which a chemical reaction occurs
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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