Question

The melting point of a solid is 24.9OC. As heat is added to melt the solid, what happens to the particles?

The motion of the particles increases.

The particles move closer together.

The motion of particles decreases.

The particles move farther apart.

Answer 1

Step-by-step explanation:

As heat is added to melt the solid, the motion of the particles increases. This is because the heat energy increases the kinetic energy of the particles, causing them to vibrate more and move faster. Eventually, the increased motion overcomes the forces holding the particles together in a solid lattice structure, and the solid melts into a liquid.