Question

multiple - choice question
why did the carbon dioxide turn to a solid?
it gave away enough energy to go through deposition (change of state from gas to a solid)
it absorbed enough energy to sublimate (change of state from solid to gas)
it froze

Explanation:

Deposition is the process of a gas changing directly to a solid by giving away energy. Sublimation is the opposite (solid - gas). Freezing is for liquid - solid change. Carbon - dioxide changing to a solid is deposition.

Answer:

it gave away enough energy to go through deposition (change of state from gas to a solid)