Chem 1035 exam 1 – Flashcards
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A = Z = X = |
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A = mass number (P+N) Z = atomic number (P) X = atomic symbol |
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Ionic compounds |
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metal reacts with nonmetal |
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____ lose electrons and ______ gain electrons to form ions with the same number of electrons as in the nearest noble gas (unreactive), and are thus more stable. |
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metals / nonmetals |
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7 elements which occur as diatomic molecules |
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H2, N2, O2, F2, Cl2, Br2, I2 |
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Covalent compounds |
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atoms of different elements share electrons to form molecules (as opposed to ions) |
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Ammonium |
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NH4+ |
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hydronium |
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H3O+ |
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acetate |
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CH3COO- |
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cyanide |
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CN- |
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hydroxide |
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OH- |
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Chlorate |
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ClO3- |
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nitrite |
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NO2- |
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nitrate |
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NO3- |
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permanganate |
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MnO4- |
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carbonate |
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CO3-2 |
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chromate |
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CrO4-2 |
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dichromate |
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Cr2O7-2 |
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oxide |
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O2-2 |
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Phosphate |
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PO4-3 |
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sulfate |
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SO4-2 |