Question

Which statement describes how a substance melts?(1 point)
Responses

Molecules in the substance gain kinetic energy and then become more tightly bound to each other.
Molecules in the substance gain kinetic energy and then become more tightly bound to each other.

Molecules in the substance lose kinetic energy and then become less tightly bound to each other.
Molecules in the substance lose kinetic energy and then become less tightly bound to each other.

Molecules in the substance lose kinetic energy and then become more tightly bound to each other.
Molecules in the substance lose kinetic energy and then become more tightly bound to each other.

Molecules in the substance gain kinetic energy and then become less tightly bound to each other.

Answer 1

Molecules in the substance gain kinetic energy and then become less tightly bound to each other.

Explanation: Heating increases molecular kinetic energy, overcoming some intermolecular forces so the solid structure breaks down into a less tightly bound liquid.