Chemistry Ch. 11 Key Concepts (Prentice Hall) – Flashcards
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How do you write a word equation? (a-b)
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a. Reactants on left of arrow (separated by plus signs) b. Products on right of arrow (separated by plus signs)
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How do you write a skeleton equation? (a-b)
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a. Reactants' formulas on left b. Products' formulas on right
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What are the 5 general types of reactions?
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1. Combination 2. Decomposition 3. Single-replacement 4. Double-replacement 5. Combustion
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What is the # of elements and/or compounds reacting a good indicator of? (2)
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1. Reaction type 2. Products
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How many products are there in a combination reaction?
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1
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What does a decomposition reaction involve the breakdown of?
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1 compound into 2+ simpler substances
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In a single-replacement reaction, what are both the reactants and products? (2)
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1. Element2. Compound
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What does a double-replacement reaction generally take place between?
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2 ionic compounds in aqueous solution
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What is a reactant of a combustion reaction?
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Oxygen
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Activity series:
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List of elements from most active to least active
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Balanced equation:
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An equation where each side has the same number of atoms in each element
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Catalyst:
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A substance that speeds up the reaction but isn't used up in the reaction
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Chemical equation:
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A representation of a chemical reaction
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Coefficients:
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Small whole numbers that are placed in front of the formulas to balance it
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Combination reaction:
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A chemical change where 2+ substances react to make 1 new substance
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Combustion reaction:
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A chemical change where an element/compound reacts with oxygen
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Complete ionic equation:
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An equation that shows dissolved ionic compounds as free ions
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Decomposition reaction:
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A chemical change where 1 compound breaks down into 2+ simpler products
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Double-replacement reaction:
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A chemical change that involves an exchange of +ions between 2 compounds
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Net ionic equation:
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A reaction's equation that only shows the particles that are directly involved in the chemical change
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Single-replacement reaction:
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A chemical change where 1 element replaces another element
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Skeleton equation:
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A chemical equation that doesn't say the amounts of reactants / products
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Spectator ion:
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An ion that is on both sides of an equation, but isn't directly involved in the reaction
