Answer: lower temperature.
- A lower temperature
- B higher temperature
- C the same temperature
- D any temperature
Correct answer: A. lower temperature
Explanation: Heat always flows from hot to cold until thermal equilibrium is reached.
During a phase change (melting or boiling), temperature stays constant while heat is absorbed entirely as latent heat (Q=mL); temperature only rises again once the substance is fully in its new phase.
Concept context
Temperature scales, thermal expansion, calorimetry, and the three modes of heat transfer including radiation laws.