Chemistry Chapter 8 – Flashcards
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| In a combustion reaction, one of the reactants is ______ |
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| oxygen |
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| What are the missing coefficients for the skeleton equation: N2+H2=NH3 |
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| 1,2,3 |
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| What are the correnct formulas and coefficients for the products of this double-replacement reaction? RbOH+H3PO4= ______ |
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| Rb3PO4+3H2O |
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| What does the arrow (-->) represent |
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| is formed |
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| Aluminum chloride and bubbles of bydrogen gas are produced when metallic aluminum is placed in hydrochloric acid. What is the balanced equation for this reaction |
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| 2Al+6HCl-->2AlCl3+3H2 |
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| In order to predict whether of not a single-replacement reaction takes place, we need to consult a chart which shows the ______ |
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| activity series of metals |
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| What are the missing coefficents for the skeleton equation Cr(s)+Fe(NO3)2(aq)-->Fe(s)+Cr(NO3)3(aq) |
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| 2,3,3,2 |
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| When potassium hydroxide and barium chloride react, porassium chlotide and barium hydroxide are formed. The balanced equation for this reaction is ___ |
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| 2KOH+BaCl2-->2KCl+Ba(OH)2 |
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| Wha is the balanced equation for the combination reaction that takes place when iron(III) oxide is formed from its constituent elements |
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| 4Fe+3O2-->2Fe2O3 |
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| What are the missing coefficients for the skeleton equation NH3(g)+O2(g)-->N2(g)+H2O(l) |
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| 4,3,2,6 |
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| What does the triangle symbol in a chemical equation mean |
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| Heat is supplied to the reaction |
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| If you rewrite the following equation as a balanced chemical equation, what will that coefficient and symbol for fluorine be? nitrogen trifluorine --> nitrogen+fluorine |
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| 3F |
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| If a combination reaction takes place between potassium chlorine, what is the product? |
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| KCl |
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| Chemical Reactions ____ a)occur only in in living organisms b)create and destroy atoms c)only occur outside living organisms d)produce new substances |
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| d)produce new substances |
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| The symbol of two arrows facing on top of each other facing different directions indicates ______ |
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| that the reaction is reversible |
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| In the chemical equation H2O2(aq)-->H2O(l)+O2(g) the H2O2 is a ____ |
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| reactant |
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| A catalyst is ______ |
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| not used up in a reaction |
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| In every balanced chemical equation each side of the equation has the same number of _____ |
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| molecules |
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| Chemical equations much be balanced to satisfy the law of _______ |
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| conservation of mass |
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| An equation in which each side has the same number of atoms of each element is a ______ |
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| balanced equation |
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| A concise representation of a chemical reaction is a ______ |
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| chemical equation |
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| A starting substance in a chemical reaction is the ______ |
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| reactant |
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| A new substance formed in a chemical reaction is the _____ |
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| product |
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| A chemical equation that does not indicate relative amounts of reactants and products is a _______ |
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| skeleton equation |
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| A reaction in which oxygen reacts with another substance, often producing heat or light is a _____ |
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| combustion reaction |
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| A reaction in which a single compound is broken down into simpler substances is a _____ |
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| decomposition reaction |
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| A reaction in which the atoms of one element replace the atoms of a second element is a _______ |
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| single-replacement reaction |
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| a list of metals in order of decreasing reactivity is ____ |
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| activity series of metals |
