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Cards In This Set
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How do you write a word equation?
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Write name of reactants to left of arrow separated by plus signs; write the names of products to the right of arrow, also separated by plus signs.
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Chemical Equation
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Equation representing a chemical reaction; the formulas of the reactants (on left) are connected by arrow with formulas for the products (on right)
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Skeleton Equation
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Chemical equation that does not indicate teh relative amounts of the reactants and products
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How do you write a skeleton equation?
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Write the formulas of the reactants to the left of the yields sign (arrow) and the formulas of the products to the right.
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Catalyst
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Substanced that speeds up the reaction but is not used up in the reaction
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Coefficients
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Small whole number that are placed in front of the formulas in an equation in order to balance it
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Balanced Equation
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Each side of the euqation has the same number of atoms of each element and mass in conserved
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What are steps in writing a balanced chemical equation?
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First write the skeleton equation. Then use coefficients to balance the equation so that it obeys the law of conservation of mass
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What is the law of conservation of mass?
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Any physical change or chemical reaction, mass is conserved; mass can be neither created nor destroyed.
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What are the five general types of reactions?
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Combination; Decomposition; Single Replacement; Double Replacement; and Combustion
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Combination Reaction
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A chemical change in which two or more substances react to form a single new substance
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Decomposition Reaction
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A chemical change inwhich a single compound breaks down into two or more simpler products
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Single Replacement Reaction
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Chemical change in whichone element replaces a second element in a compound
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Activity Series
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Lists elements in order of decreasing reactivity; the activity series of halogens
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Double Replacement Reaction
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Chemical change involving an exchange of positive ions between two compounds
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