What happens to the temperature of a solid when heat is added up to its melting point?

What happens to the temperature of a solid when heat is added up to its melting point?

• A. Temperature falls as energy is stored in bonds.
• B. Temperature stays constant while rising internal energy increases.
• C. Temperature rises, then decreases as melting begins.
• D. Temperature rises because internal energy increases (kinetic energy increases).

Answer: (D)