Question

7 when does sublimation of a substance typically occur? a only when the substance is compacted fully b when temperature is at its lowest possible point c when intermolecular forces are extremely high d by gaining enough energy to skip the liquid phase

Explanation:

Sublimation is the process where a solid turns directly into a gas. For this to happen, the substance needs to gain enough energy to bypass the liquid phase. Option A is incorrect as full compaction is not related to sublimation. Option B is wrong because at the lowest temperature (absolute zero), particles have minimal energy and sublimation won't occur. Option C is incorrect since high intermolecular forces would keep the substance in a more ordered (like solid) state and not favor sublimation. Option D correctly describes the energy - gain requirement for skipping the liquid phase, which is the essence of sublimation.

Answer:

D. By gaining enough energy to skip the liquid phase