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15 Cards in this Set
- Front
- Back
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Combustion |
A rapid reaction between fuel and oxygen that produces energy |
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Combination Reaction |
A reaction in which two or more substances form a single product |
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Chemical Equation |
A description of the identities and proportions of reactants and products |
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Reactants |
Substances consumed during a chemical reaction |
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Products |
Substances formed during a chemical reaction |
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Law of Conservation of Mass |
The principle that the sum of the masses of the reactants in a chemical reaction is equal to the sum of the masses of the products |
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Stoichiometry |
The mole ratios among the reactants and products in a chemical reaction |
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Percent Composition |
The composition of a compound expressed in terms of the percentage by mass of each element in the compound |
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Empirical Formula |
A formula showing the smallest whole-number ratio of elements in a compound |
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Molecular Ion (M+) |
An ion formed in a mass spectrometer when a molecule loses an electron |
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Mass Spectrum |
A plot of the number of ions (y axis) that are produced in a mass spectrometer and then separated based on their mass-to-charge (m/z) ratios (x axis) |
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Combustion Analysis |
A laboratory procedure in which a substance is burned completely in oxygen to produce known compounds whose masses are used to determine the composition of the original material |
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Limiting Reactant |
A reactant that is consumed completely in a chemical reaction. The amount of product formed depends on the amount of the limiting reactant available |
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Theoretical Yield |
The maximum amount of product possible in a chemical reaction for given quantities of reactants; also called stoichiometric yield |
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Percent Yield |
The ratio, expressed as a percentage, of the actual yield of a chemical reaction to the theoretical yield |
