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Cards In This Set
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Stoichiometry
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The area of study that examines the quantities of substances consumed and produced in chemical reactions.
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Chemical Equations
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Representations of chemical reactions
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Reactants
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Starting substances of a chemical reaction.
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Products
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Substances produced during a chemical reaction.
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Coefficients
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Numbers in front of formulas
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How many atoms of Mg, H, and O are represented by the notation 3Mg(OH)2
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3 Mg, 6 O, 6 H
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Combination Reaction
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Two or more substances react to form one product.
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Decomposition Reaction
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One substance undergoes a reaction to produce two or more other substances.
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Combustion Reactions
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Rapid reactions that produce a flame.
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Formula Weight
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The sum of the atomic weights of the atoms in the chemical formula of the substance.
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Molecular Weight
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When the Formula Weight is that of a molecule
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Percentage Composition
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The percentage by mass contributed by each element.
(Number of Atoms * (Atomic Weight of the Element) of the Element) -------------------------------------------------* 100% Formula Weight of Substance |
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Mole
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The amount of matter that contains as many objects as the number of atoms in exactly 12g of isotopically pure
12C. =6.0221421*1023 |
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Avagadro"s Number
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The rounded value of 1 mole, which is 6.02*1023
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Molar Mass
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The mass in grams of one mole of a substance.
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