> For the complete documentation index, see [llms.txt](https://knowmayus.gitbook.io/chemistry/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowmayus.gitbook.io/chemistry/definitions.md).

# Definitions

**Polyatomic ions:** ions that contain several atoms

**Oxidation:** lose electrons Oxidation is a chemical process. It is defined as a process that occurs when atoms or groups of atoms lose electrons. Another way to define oxidation is when a chemical species gains oxygen or loses hydrogen.

E.x. Cation formation is a type of oxidation as its a loss of electrons

**Reduction:** transfer of electrons between species in a chemical reaction, where there is a process of gaining electrons or a decrease in the oxidation state by an element. A reduction chemical reaction involves increasing electrons associated with a single atom or a group of atoms.

E.g. Anion formation is a type of reduction as its a transference of electrons

**Redox:**  Transference of electrons ( reduction + oxidation ) 

**Octet Rule:** AToms tend to strive to achieve a noble gas configuration. Its called this because noble gases tend to have 8 valence electrons.

**Vaporization:** vaporization, conversion of a substance from the liquid or solid phase into the gaseous (vapour) phase