Stoichiometry Test Review
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Created by:
annagrim13 on February 26, 2012
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20 terms
Terms | Definitions |
|---|---|
 Actual yield | the amount of chemical that you actually make |
| Theoretical yield | the amount of product which should be made in a chemical reaction |
| Limiting reactant | the cemical that determines how far the chemical reaction will go before the chemical in question gets used up, causing the reaction to stop |
| Percent yield | The actual yield divided by the theoretical yield times 100 |
| Excess reactant | the reactant that remains when a reaction stops when the limiting reactant is completely consumed |
| is conserved in every oridnary chemical reaction | mass |
| the______is the quantity that can be used in the same way as moles when interpreting blanaced chemical equations | number of molecules |
| the _____is conserved only in reactions where te temperature is constant and the number of moles of gasous reactants is the same as that of gasous products | volume |
| the calculation of quantitites in chmical equationstis called | stoichiometry |
| what four things are conserved? | mass, moles, molecules, and volume |
| in every chemical reaction, ___and ____ are conserved | mass, atoms |
| in a chemical reaction, the mass of the products is_____to the mass of the reactants | equal |
| which type of stoichimetric calculation does not requre the use of the molar mass? | volume to volume |
| when two substances react to form products, the reactnat which is used up is called the | limiting reactant |
| when an equation is used to calculate the amount of product that will form during a reaction, then the value obtained is called the | theoretical |
| the amoun of product obtained is determine by the limiting reagent | true |
| the react that has teh smallest given mass is the limiting reagent | false |
| a blanced equation is necessary to determine which reactant is the limiting reagent | true |
| some of teh excess reagent is left over after the reaction is complete | true |
| list thee reasons why the actual yield would be less than theoretical yield | impure reactants present, competing side reactions, and loss of product during purification |
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