The boiling point of a pure substance is defined as the temperature at which: A) the kinetic energy of the molecules begins to increase B) the vapor pressure equals the external pressure C) the molecules of the substance break apart D) the liquid phase can be completely evaporated thanks in advance terima kasih

1

Jawapan

2016-06-25T09:31:20+08:00
C, because as the temperature increases the molecules get farther apart and  at one point turn into a gas!