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Chemistry Test2

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Across
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When balancing an equation I can never change the ____ of a particular compound
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A+B -> AB
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The law of the conservation of ____ states that the sum of the masses of the products is always = to the sum of the masses of the reactants
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AB + CD -> AD + CB
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When given the percentages and asked to find the empirical formula of a compound I must convert the percentages to ____
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Prefix for 10
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When combining ions the charges of the cation and anion must equal ____
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How is the arrow in a chemical equation read?
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to measure the elements
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formed by removing one or more electrons
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AB -> A+B
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A chemical ______ is a symbolic representation of a chemical reaction
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The simplest ratio for a given compound is it ____ formula
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The law of definite composition states A given compound will always have the same ____ _____ or mass percent, no matter what its origin
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Prefix used to indicate 9
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The units g/mol are used to indicate ____ _____
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The charge of the cation hydrogen
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Prefix for 6
Down
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You use _____ to balance equations
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The first ion in an ionic equation is a ____
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When given a substances empirical formula what else is needed to calculate its molecular formula
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AB + C -> A + BC
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When a compound is composed of 2 nonmetals usually the SECOND one ends in what suffix
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Identical to the empirical formula
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name for ionic compound OH
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Located on the left side of a chemical equation
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When naming an ionic compound which ion is named first
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What is measured in atomic mass units (u)
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If I change the subscripts of a compound I change the ____ of the substance
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Hepta- is the prefix used when there are ___ of a certain molecule in a compound
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What is the charge of hydroxide
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Chemical formula for Sodium hydroxide
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formed by adding one or more electrons
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Phosphate has a charge of negative _____
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Tetra is the prefix for which number
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The quantity of a ___ is Avogadro's number
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The prefix used to indicate 2