Is heat lost gained or absorbed during sublimation?

Answer 1

Sublimation of a substance, for example, of frozen carbon dioxide or dry ice, involves the substance's absorbing heat energy from its surroundings. Hence, the dry ice itself gains the energy needed to change from solid to gas, and the surroundings lose the energy, and indeed are perceived as colder. Sublimation of a substance, for example, of frozen carbon dioxide or dry ice, involves the substance's absorbing heat energy from its surroundings. Hence, the dry ice itself gains the energy needed to change from solid to gas, and the surroundings lose the energy, and indeed are perceived as colder.

Answer 2

Deposition is exothermic--it releases heat.

Freezing and condensation are also generally exothermic.

In contrast, fusion, sublimation and and vaporization are generally endothermic.

Answer 3

Heat is absorbed during sublimation, as the solid undergoes a phase change directly to a gas without passing through the liquid phase. This absorption of heat provides the energy needed to break the intermolecular forces holding the solid together, allowing it to change directly into a gas.

Answer 4

Heat is lost due to gas, a hot substance, going into a colder substance

Answer 5

absorbed