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Definition
| The relationships among the quantities of reactants and products involved in chemical reactions. |
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| law of conservation of mass |
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Definition
| A scientific law stating that the total mass of the products of a chemical reaction is the same as the total mass of the reactants, so that mass remains constant during the reaction. |
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Definition
| A representation of a chemical reaction using the chemical formulas of the reactants using the chemical formulas of the reactants and products; a balanced chemical equation contains equal numbers of atoms of each element on both sides of the equation. |
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Definition
| A starting substance in a chemical reaction; it appears to the left of the arrow in a chemical equation. |
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Definition
| A substance produced in a chemical reaction; it appears to the right of the arrow in a chemical equation. |
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Definition
| A chemical reaction in which two or more substances combine to form a single product. |
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Definition
| A chemical reaction in which a single compound reacts to give two or more products. |
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Definition
| A chemical reaction that proceeds with evolution of heat and usually also a flame; most combustion involves reaction with oxygen, as in the burning of a match. |
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Definition
| The mass of the collection of atoms represented by a chemical formula. |
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Definition
| The mass of collection of atoms represented by the chemical formula for a molecule. |
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Definition
| A collection of Avogadro's number (6.022 × 1023) of objects. |
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Definition
| The number of 12C atoms in exactly 12 g of 12C; it equals 6.022 × 1023. |
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Definition
| The mass of 1 mol of a substance in grams; it is numerically equal to the formula weight in atomic mass units. |
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Term
| limiting reactant (limiting reagent) |
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Definition
| The reactant present in the smallest stoichiometric quantity in a mixture of reactants; the amount of product that can form is limited by the complete consumption of the limiting reactant. |
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Definition
| The quantity of product that is calculated to form when all of the limiting reagent reacts. |
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Term
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Definition
| The ratio of the actual (experimental) yield of a product to its theoretical (calculated) yield, multiplied by 100. |
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