Question

electrical bonding investigation quick check
which statement describes how a substance melts? (1 point)
○ 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 more tightly bound to each other.
○ molecules in the substance gain 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.

Explanation:

Melting requires heating, which increases molecular kinetic energy. Higher kinetic energy allows molecules to overcome intermolecular forces, becoming less tightly bound (changing from solid to liquid).

Answer:

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