solubility rules 1-3

Rule 1.

Li^+, Na^+, K^+, Rb^+, Cs^+, (ammonium)- NH4^+

Rule 2.

All (nitrate)- NO3-, and (nitrite)- NO2-

Rule 3.

All (chloride)- Cl-, (bromide) Br-, (iodine)- I- salts, except of those of Ag^+, Pb^2+, and Hg2²+

Acid

Starts with H or ends with -COOH

Base

Ends in -OH(with a metal), or is NH3

Neither

Regular salts or non-acidic carbon molecules (NaBr, SnCl4, C6H12O6)

Completing a reaction

swap partners: AB+CD→AD+CB (metal goes first), balance charges of new pairings

Polyatomic ion

will have a superscript (-,+): The sum of all oxidation numbers must equal the charge of the ion

Neural compound

no superscript: the sum of all oxidation numbers must equal 0

oxidation number

sum of (number of atoms x oxidation numbers must equal)= overall charge