Changes

: The [[particle]]s in a [[material]] have [[Kinetic Energy Store|kinetic energy]], because they move, and several types of [[Potential Energy|potential energy]] because there are [[force]]s between [[adjacent]] [[particle]]s.

: [[Force]]s of [[attraction]], including [[Chemical Bond|chemical bonds]], pull [[particle]]s together. The further apart the [[particle]]s the more [[Potential Energy|potential energy]] they poses. As a result the [[gas]]eous [[State of Matter|state]] of a [[substance]] has more [[Potential Energy|potential energy]] than the [[liquid]] [[State of Matter|state]] of that [[substance]], even if the [[temperature]] of both is the same because the [[particle]]s are spread apart in a [[gas]] and close together in a [[liquid]].