Chemical bond - a force that holds the particles in a compound together

Chemical formula - a way of representing a chemical substance using symbols and figures

Conductor -  a substance which conducts electricity but is not chemically changed during conduction

Delocalized electron - the outermost shell electrons of each atom in a metal, which are not associated with a particular ion and can move around

Electrolyte - a compound which conducts electricity in molten state or aqueous solution and are decomposed by electricity during conduction

Ionic bond - the strong electrostatic forces of attraction between oppositely charged ions

Ionic compound - a compound with an ionic bond

Metallic bond - a type of bond in which positive metal ions are held together by a ‘sea’ of mobile electrons

Molten - substance appears in solid state at room temperature is liquefied by heat, changed into liquid state

Non-conductor - a substance which does not conduct electricity in solid, molten state or aqueous solution

Polyatomic ion - an ion formed from a group of atoms