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23 Cards in this Set
- Front
- Back
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Atomic Mass
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the mass of the atom in atomic mass units (amu)
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Atomic Mass Unit
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a mass exactly equal to one twelfth the mass of one carbon-12 atom.
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Mole
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the amount of a substance that contains as many elementary entities (atoms, molecules, or other particles) as there are atoms in exactly 12 g (or 0.012 kg) of the carbon-12 atom isotope.
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Avogadro's number
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Equal to one mole.
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Molar Mass
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the mass of 1 mole of units (such as atoms or molecules) of a substance.
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Molecular Mass
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sum of the atomic masses (in amu) in the molecule.
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Percent Composition by mass
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percent by mass of each elemnt in a compound.
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Chemical Reaction
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a process in which a substance (or substances) is changed into one or more new substances.
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Chemical Equation
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uses chemical symbols to show what happens during a chemical reaction.
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Reactants
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the starting materials in a chemical reaction.
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Product
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the substance formed as a result of a chemical reaction.
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Stoichiometry
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the quantitative study of reactants and products in a chemical reaction.
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Mole Method
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the stoichiometric coefficients in a chemical equation can be interpreted as the number of moles of each substance.
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Stoichiometric Amounts
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in the proporation indicated by the balance equation.
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Limiting Reagent
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the reactant used up first in a reaction.
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Excess Reagents
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reactants present in quantities greater than necessary to react with the quantity of th elimiting reagent.
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Theoretical Yeild
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the amount of product that would result if all the limiting reagent reacted.
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Actual Yeild
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the maount of product actually obtained from a reaction.
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Percent Yeild
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the proportion of the actualy Yeild to the theoretical yeild.
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Excess Reagents
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reactants present in quantities greater than necessary to react with the quantity of th elimiting reagent.
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Theoretical Yeild
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the amount of product that would result if all the limiting reagent reacted.
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Actual Yeild
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the maount of product actually obtained from a reaction.
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Percent Yeild
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the proportion of the actualy Yeild to the theoretical yeild.
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