A single atom with a positive or negative charge resulting from the loss or gain of one or more valence electrons.
Monatomic ions
Hydrochloric acid
HCl
Sodium Hydroxide
NaOH
Dihydrogen phosphate
H2PO4-
dinitrogen monoxide
N2O/nitrous oxide/laughing gas
A tightly bound group of atoms that behaves as a unit and has a positive or negative charge
Polyatomic ion
Sulfuric acid
H2SO4
Lithium Hydroxide
LiOH
Permanganate
MnO4-
Plumbic ion/Lead(IV) ion
A compound composed of two elements
Binary compound
HNO3
Nitric acid
NH4OH
Ammonium hydroxide
HPO4^2-
Hydrogen Phosphate
Ethanol
C2H5OH
Whenever the same two elements form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.
Law of multiple proportions.
H3PO4
Phosphoric acid
Aluminum hydroxide
Al(OH)3
PO3^3-
Phosphite
Sucrose
C12H22O11
In samples of any chemical compound, the masses of the elements are always in the same proportions.
Law of definite proportions.
Sulfurous acid
H2SO3
Fe(OH)2
Ferrous Hydroxide/Iron (II) Hydroxide
Dichromate
Cr2O7^2-
HOC(CO2H)(CH2CO2H)2
Citric Acid