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20 Cards in this Set
- Front
- Back
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substances entering the reaction
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reactants
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substances formed
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products
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shorthand expression for a chemical change or reaction
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chemical equation
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contains same number of each kind of atom on each side of the equation
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balanced equation
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addition of atomis masses
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molcular weight
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2 reactants combine to yeild 1 product
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combination reaction
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single substance is decomposed to give 2 or more different sunstances
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decomposition reaction
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1 element reacts with a coupound to replace one of the eleents of the compound, yeilding a different element and a different compound
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single-displacement reaction
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2 compounds exchange parteners with eachother to produce 2 different compounds
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double-displacement
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liberate heat
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exothermic reactions
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absorb heat
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endothermic reactions
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quantity of heat produced by a reaction i known as:
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heat of reaction
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amount of energy needed to begin a chemical reaction:
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activation energy
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When metal reacts with hydrochloric acid
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hydrogen gas s produced
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products have geater potential energy than the products
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endothermic reaction
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reactants have a greater potential energy that the prducts
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exothermic reaction
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deals with quantative relationships among reactants and products:
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stoichiometry
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ratio between the number of moles of any two species involved in the chemical reaction
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mole ratio
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mole ratio
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(desired subtance)/(starting substance)
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limits the amount of product that can be formed
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limiting reactant
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