Question

multiple - choice question
the heat from the room makes the molecules move...
slower and slower and they move closer and closer together.
faster and faster and they move farther and farther apart.
the same and they move farther and farther apart.

Explanation:

When heat is added to a substance, the kinetic energy of its molecules increases. This causes the molecules to move faster and spread out as they gain more energy.

Answer:

faster and faster and they move farther and farther apart.