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33 Cards in this Set
- Front
- Back
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Diatomic molecules |
H2, N2, O2, F2, Cl2, Br2, I2 These are almost always non-metals with 4 of the halogens |
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Atomic elements |
Single atoms as their basic unit. Example: Mg |
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Molecular elements |
These elements exist as a diatomic molecules. Two atoms of that element bonded together Ex: H2, O2 |
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Molecular compounds |
Composed of two or more non-metals EX: CO2 |
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Ionic compounds |
Composed of one or more cations (metal+) and anions (non-metals-) |
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Basic unit for ionic compounds |
Formula unit |
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Empirical formula |
Simplest whole number ratio of atoms of each element in a compound. |
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Molecular formula |
Actual number of atoms of each element in molecule of a compound |
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Structural formula |
Uses lines to represent chemical bonds and shows how the atoms In a molecule are connected to each other |
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What do ionic compounds always contain? |
negative and postive ions In the chemical formula the sum of the charges of the + (cations) must always exactly cancel the sum of the charged of - ions (anions) |
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Polyatomic ions |
Ions that are themselves composed of a group of atoms with an overall charge. |
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Acetate Ionic compounds that contains Polyatomic ions |
C2H3O2- |
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Carbonate Ionic compounds that contains Polyatomic ions |
CO3 (2-) |
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Hydrogen carbonate (bicarbonate) |
HCO3- |
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Hydroxide Ionic compounds that contains Polyatomic ions |
OH- |
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Nitrate Ionic compounds that contains Polyatomic ions |
NO3- |
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Nitrite Ionic compounds that contains Polyatomic ions |
NO2- |
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Chromate Ionic compounds that contains Polyatomic ions |
CrO4(2-) |
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Dichromate Ionic compounds that contains Polyatomic ions |
Cr2O7 (2-) |
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Phosphate Ionic compounds that contains Polyatomic ions |
PO4 (3-) |
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Hydrogen phosphate Ionic compounds that contains Polyatomic ions |
HPO4 (2-) |
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Ammonium Ionic compounds that contains Polyatomic ions |
NH4+ |
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Hydrochlorite Ionic compounds that contains Polyatomic ions |
ClO- |
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Chlorite |
ClO2- |
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Chlorate |
ClO3- |
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Perchlorate |
ClO4- |
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Permanganate |
MnO4- |
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Sulfate |
SO4 (2-) |
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Sulfite |
SO3 (2-) |
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Hydrogen sulfite (bisulfite) |
HSO3- |
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Hydrogen sulfate |
HSO4- |
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Peroxide |
O2 (2-) |
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Cyanide |
CN- |
