Chemistry Chapter 9 Study Guide – Flashcards
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Chemical Reaction
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Process in which one or more substances are convertered into new substances
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Reactant
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Substance that enters a chemical reaction
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Product
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Substance formed during a chemical reaction
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Balanced chemical equation
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Uses coefficients to show that the number of atoms of each element that enters into a reaction is equal to the number of atoms of that same element produced during the reaction
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Coefficient
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Whole number that precedes a reactant or product symbol or formula in chemical equation
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Synthesis (direct combination)
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Chemical reaction in which two or more simple reactants join to for a single product
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Decomposition Reaction
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Chemical reaction in which a single complex compound is broken down into two or more products
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Single Replacement Reaction
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Chemical reaction in which an uncombined element replaces an element that is part of a compound
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Double Replacement Reaction
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Chemical reaction in which atoms or ions from different compounds replace each other
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chemical Equation
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condensed statement that uses chemical formulas and identifies the reactants and products in a chemical reaction
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What happens to atom during a chemical reaction?
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Atoms are rearranged
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The unbalanced chemical equation for the reaction in which carbon monoxide burns in oxygen to form carbon dioxide is?
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CO + O2 -> CO2
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How is an equation balanced?
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Adding coefficients
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A reaction that has two compounds as reactants and two compounds as products might be described as what type of reaction?
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Double-replacement
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An atom's ability to undergo chemcal reactions is determined by its what?
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Outermost electrons
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When the equation Al + AlBr2 -> AlBr3 is balanced, the coefficient for Al is what?
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2
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Two or more substances combine to form one substance in wht type of reaction?
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Synthesis
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Mg + 2HCl -> MgCl2 + H2 is what type of reaction?
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Single-replacement
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A Chemical reaction is a process in which a) reactants change into products b) substances with new chemical and physical properties are formed c) the law of conservation of mass applies d) all of the above
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All of the above
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What are the reactants in Zn + CuSO4 -> ZnSO4 + Cu?
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zinc and copper (II) Sulfate
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An atom will bond with another atom if both atoms have what?
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Incomplete sets of valence electrons
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What happens to the bonds between atoms in a substance the undergoes a chemical reaction?
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Existing bonds are broken and atoms are rearranged with formation of new bonds
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in a chemical reaction, the total mass of the substance before the reaction is what?
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equal to the total mass of the substances after the reaction
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The numbers used to balance a chemical equation are called what?
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coefficients
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What type of reaction results in as ingle product?
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synthesis
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A double-replacement reaction is likely to occur when what happens?
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2 ionic compound are dissolved in water
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What is the physical state of methane in the following equation: CH4 (g) + O2 (g) -> CO2 (g) + H2O (g)
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Gas
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A combustion reaction usually involves what?
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Something being burned
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Us the Activity series to determine which of the following elements will replace copper in copper (I) sulfate: Fe, Hg, Ag, Au
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Fe
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In a chemical equation, the symbol (aq) indicates that the substance is what?
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Dissolved in water
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SA: If a chemical equation is impossible to balance, what is most likely the problem?
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the formulas of the compounds are written incorrectly
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SA: For the following reaction, list the reactants and products and the states of each reactat and product: 6CO2 (g) + 6H2O (g) -> C6H12O6 (aq) + 6O2 (g)
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Reactants: CO2 is a gas, H20 is a gas Products: C6H12O6 is aqueous, 6O2 is a gas
