Chapter 11: Chemical Reactions Study Guide – Flashcards
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A representation of a chemical reaction with reactants on the left, products on the right, and an arrow separating the two
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chemical equation
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A chemical equation that does not indicate the relative amounts of the reactants and products
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skeleton equation
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A substance that speeds up the reaction but is not used up in the reaction
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catalyst
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Small whole number ratios that are placed in front of the formulas in an equation in order to balance it
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coefficient
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A equation where each side of the equation has the same number of atoms of each element, and mass is conserved
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balanced equation
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Iron + oxygen ---> iron (III) oxide is an example of a(n)?
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word equation
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Fe + O2 ---> Fe2O3 is an example of a(n)?
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chemical equation
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Balance H2 + O2 ---> H2O
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2H2 + O2 ---> 2H2O
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Balance AgNO3 + H2S ---> Ag2S + HNO3
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2AgNO3 + H2S ---> Ag2S + 2HNO3
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What do (s), (g), (l) and (aq) stand for?
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solid, gas, liquid, and aqueous
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A chemical change in which two or more substances react to form a single new substance
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combination reaction
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A chemical change in which a single compound breaks down into two or more simpler products
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decomposition reaction
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A chemical change in which one element replaces a second element in a compound
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single replacement reaction
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A chemical change involving an exchange of positive ions between two compounds
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double replacement reaction
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A chemical change in which an element or compound reacts with oxygen, often producing energy in the form of heat or light.
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combustion reaction
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Is 2Mg(s) + O2(g) ---> 2MgO a combination, decomposition, or single replacement reaction?
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combination
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Is HgO(s) ---> Hg(l) + O2(g) a combination, decomposition, or single replacement reaction?
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decomposition
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Is 2K(s) + 2H2O(l) ---> 2KOH(aq) + H2(g) a combination, decomposition, or single replacement reaction?
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single replacement
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A list of metals in order of decreasing reactivity
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activity series
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Reactants: 2 elements Products: A single compound Is it a combination, decomposition, single replacement, double replacement, or combustion reaction?
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combination
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Reactants: A single compound Products: Two or more elements/compounds Is it a combination, decomposition, single replacement, double replacement, or combustion reaction?
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decomposition
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Reactants: An element and a compound Products: A different elements and new compound Is it a combination, decomposition, single replacement, double replacement, or combustion reaction?
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single replacement
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Reactants: Two ionic compounds Products: Two new compounds Is it a combination, decomposition, single replacement, double replacement, or combustion reaction?
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double replacement
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Reactants: Oxygen and a compound of C, H, O Products: CO2 and H2O Is it a combination, decomposition, single replacement, double replacement, or combustion reaction?
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combustion
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An equation that shows dissolved ionic compounds as dissociated free ions
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complete ionic equation
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An ion that appears on both sides of an equation and is not directly involved in the reaction
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spectator ion
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An equation for a reaction in solution that shows only those particles that are directly involved in the chemical change
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net ionic equation
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Is Ag+(aq) + NO3-(aq) +Na+(aq) + Cl-(aq) ---> AgCl(s) + Na+(aq) + NO3-(aq) a complete ionic equation or a net ionic equation?
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complete ionic
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Is Ag+(aq) + Cl-(aq) ---> AgCl(s) a complete ionic equation or a net ionic equation?
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net ionic
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In a net ionic equation, what two things are balanced?
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mass and charge
