Question

select the answer that explains why the balloon in hot water inflates.
when heat is added to the bottle, air molecules move faster and come closer together.
when heat is added to the bottle, air molecules move slower and closer together.
when heat is added to the bottle, air molecules move slower and farther apart.
when heat is added to the bottle, air molecules move faster and spread farther apart.

Explanation:

When heat is added, the kinetic energy of air molecules increases. This causes them to move faster. As they move faster, they spread out (move farther apart), which leads to the inflation of the balloon.

Answer:

When heat is added to the bottle, air molecules move faster and spread farther apart.