37.5k views
1 vote
Explain why the internal energy of a solid increases when its heated at its melting point

User Cocoafan
by
7.9k points

1 Answer

0 votes
Because the molecules are vibrating. Also keep in mind that when a substance is a solid its molecules are tightly packed. When it is a liquid its molecules are less compact
User Evsheino
by
8.1k points