Answer: latent heat.
- A latent heat
- B specific heat
- C sensible heat
- D molar heat
Correct answer: A. latent heat
Explanation: Latent heat drives a phase change without a temperature change.
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.