Which process requires more energy per gram: melting ice or boiling water?
A) They both require the same amount of energy because both processes involve breaking intermolecular forces.
B) Melting ice takes more energy because more intermolecular forces are broken.
C) Boiling water takes more energy because more intermolecular forces are broken.
D) Melting ice takes more energy because it occurs at 0 °C instead of 100 °C.
E) The energy of these processes has never been compared.

Question

Quizplus · Accepted Answer

Boiling water requires more energy per gram than melting ice because the process of boiling involves breaking hydrogen bonds to transition from a liquid to a gas state, which requires more energy than transitioning from solid ice to liquid water.

Which Process Requires More Energy Per Gram: Melting Ice or Boiling