Consists of single atom with a positive or negative charge resulting from the loss or gain of one or more valence electrons.
Polyatomic ions
Composed of more than one atom.
Binary Compound
Composed of two elements and can be either ionic or molecular.
Acid
A compound that contains one or more hydrogen atoms and produces hydrogen ions (H+) when dissolved in water.
Base
An ionic compound that produces hydroxide ions when dissolved in water.
Law of Definite Proportions
States that in samples of any chemical compound, the masses of the elements are always in the same proportions.
Law of Multiple Proportions
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.