Chem Review – Flashcards
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mega.
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1,000,000 (10^6)
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kilo
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1,000 (10^3)
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deci
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.1 (10^-1)
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centi
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.01 (10^-2)
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milli
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.001 (10^-3)
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micro
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.000001 (10^-6)
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Number of Protons in 65 Zn2+ 30
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30
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Number of Nuetrons in 65 Zn2+ 30
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65 is the number of protons and nuetrons. 65-30= 35 nuetrons.
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Number of electrons in 65 Zn2+ 30
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The charge is 2+ so you subtract two from the proton number to get electron number. 30-2= 28 electrons
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predict the charge on a selenide ion
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-2
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Name the compound, CuBr2
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copper (II) bromide
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Name the compound, B4S6
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tetraboron hexasulfer (two non-metals use greek prefixes)
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what is empirical formula for C6H3N3O6
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Divide by LCD. C2HNO2
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calculate molar mass of Mg(BrO2)2
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Look up on periodic table, and add them together. Multiply Br*2 and 02*2. A=248.11
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Combination Reaction
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A reaction that has two elements as a reactants and one compound as a product is called....
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decomposition
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separation of a substance into two or more substances
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combustion reaction
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a chemical reaction that occurs when a substance reacts with oxygen (CHO), releasing energy
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single displacement
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one element trades places with another element in a compound: A + BC --> AC + B
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double displacement
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anions and cations of two different molecules switch places, forming two entirely different compounds: AB + CD --> AD + CB
