| − | The temperature at which a specific substance [[boiling|boils]]. This occurs when the [[Vapor Pressure]] is equal to the atmospheric pressure. At sea level, the atmospheric pressure on Earth equals 1.00 atm (760 mm Hg). | + | The temperature at which a specific [[substance]] [[boiling|boils]]. This occurs when the [[Vapor Pressure]] is equal to the [[atmospheric pressure]]. At [[sea level]], the [[atmospheric pressure]] on [[Earth]] equals 1.00 [[atm]] (760 mm Hg). |