Question

when water goes through vaporization, what happens to the particles? the particles speed up so fast that they cause a phase change. the particles slow down, causing a phase change. the particles remain the same and a phase change does not occur.

Explanation:

Vaporization is the process of a liquid (water) turning into a gas. During this, energy is added, so the particles (molecules of water) gain kinetic energy and speed up. This increased speed breaks the intermolecular forces enough to change phase from liquid to gas. The first option explains this: particles speed up to cause the phase change (liquid to gas). The second is wrong (slowing down is for condensation, e.g., gas to liquid). The third is wrong as vaporization is a phase change.

Answer:

The particles speed up so fast that they cause a phase change.