1.1 Formulae and Equations
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Last updated 12:03 PM on 1/21/26
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13 Terms
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Element
substance made up of only one type of atoms
2
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Compound
made up at least of two different elements chemically bonded together.
3
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Formula for Nitrate
NO3-
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Formula for carbonate
CO32-
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Formula for Oxide ions
O2-
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Formula for hydroxide ions
OH-
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Formula for ammonium
NH4+
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Formula for sulphate
SO42-
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Oxidation Number
number of electrons that have been lost or gained by the atom
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Oxidation number of an uncombined element
0
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Oxidation number of combined oxygen
-2 O
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Oxidation number of combined hydrogen
+1
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Oxidation number on simple ion
Charge on ion
Note 
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