Question

which statement best describes the process that the diagrams show?
a solid loses kinetic energy to become a liquid and then becomes a gas.
a solid gains kinetic energy to become a liquid and then becomes a gas.
a gas loses kinetic energy to become a liquid and then becomes a solid.
a gas gains kinetic energy to become a liquid and then becomes a solid.

Explanation:

In the diagram, the particles change from a closely - packed, ordered structure (solid) to a more disordered structure (liquid) and then to a highly disordered, widely - spaced structure (gas). When a solid gains kinetic energy, its particles start to move more freely (melting to liquid) and with further gain of kinetic energy, they move even more freely and apart (vaporizing to gas).

Answer:

C. A solid gains kinetic energy to become a liquid and then becomes a gas.