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Chemistry QII:QI

Oxidation Numbers, Polyions

QuestionAnswer
a number used to represent the number of electrons lost, gained, or shared in a chemical change oxidation number
unreacted elements have oxidation numbers equal to _____ zero
atoms in ionic compounds that lose electrons have ____ oxidation numbers positive
atoms in ionic compounds that gain electrons have ____ oxidation numbers negative
in a nonpolar covalent diatomic molecule, each atom has an oxidation number of _____ zero
name the 7 diatomic molecules H, O, N, F, Cl, Br, I
an atomic symbol represents (3) the name of the element, one atom of the element, the atomic mass of the element
aluminum Al
argon Ar
bromine Br
calcium Ca
Carbon C
Chlorine Cl
Copper Cu
Fluorine F
Helium He
Hydrogen H
Iodine I
Iron Fe
Magnesium Mg
Manganese Mn
Mercury Hg
Neon Ne
Nitrogen N
Oxygen O
Phosphorus P
Potassium K
Silver Ag
Sodium Na
Sulfur S
Zinc Zn
a qualitative and quantitative expression of a compound using symbols and subscripts to indicate the chemical constituents and their respective numbers formula
the abbreviation for a compound formula
two or more elements chemically combined in a definite proportion by mass compound
written above and to the right of the symbol, represent the oxidation number superscript
written below and to the right of the symbol, represents the definite proportion by which the atoms combine subscript
a group of atoms that act as a unit a possess a charge polyatomic ion
when naming polyatomic ions, the ____ atom goes first positive
ammonium ion (NH4)+1
bicarbonate ion (HCO3)-1
cyanide ion (CN)-1
hydroxide ion (OH)-1
hypochlorite ion (OCl)-1
nitrate ion (NO3)-1
nitrite ion (NO2)-1
carbonate ion (CO3)-2
sulfate ion (SO4)-2
sulfite ion (SO3)-2
phosphate ion (PO4)-3
Created by: amyziolkowski
 

 



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