Question

melting is a stage a solid goes through a phase change and becomes a liquid. it happens when heat is increased and the particles in the substance have been warmed enough. what happens to the particles when melting occurs? the particles line up. the particles move faster. the particles move slower.

Explanation:

When a solid melts, heat energy is added. This increases the kinetic energy of the particles. As a result, the particles move faster.

Answer:

The particles move faster.