Question

Which change happens when a substance melts?(1 point)
Responses

The molecules of the substance move farther apart, which pulls on the intermolecular bonds between them.
The molecules of the substance move farther apart, which pulls on the intermolecular bonds between them.

The vibration of the molecules produces enough heat to weaken the forces of attraction between the molecules of the substance.
The vibration of the molecules produces enough heat to weaken the forces of attraction between the molecules of the substance.

Heat energy forces the molecules of the substance farther apart until the rigid structure of the solid breaks.
Heat energy forces the molecules of the substance farther apart until the rigid structure of the solid breaks.

Heat energy overcomes the forces of attraction between the molecules of the substance, so the molecules can move more freely.

Answer 1

Correct answer: Heat energy overcomes the forces of attraction between the molecules of the substance, so the molecules can move more freely.

Explanation: Melting occurs when added heat gives particles enough energy to overcome intermolecular forces holding them in a fixed lattice, allowing them to move past one another (become liquid).