sublimation

[jonathan chi 1J]

Is sublimation endothermic or exothermic?

[Vincent Nguyen 3G]

Sublimation is an endothermic process since it requires heat to break apart a solid's bonds and change it into a gaseous state.

[Achyutha Kodavatikanti_3H]

Sublimation is endothermic as it requires energy to break the hydrogen bonds in a solid to make it become a gas directly

[Diya Kar]

Sublimation is the conversion of solid directly to gas. This would evidently be an endothermic process as heat/energy would be required to be absorbed in order to facilitate the conversion of state of matter.

[Michelle Gong]

Sublimation is when a solid turns into a gas meaning that once must break the bonds of the solid and create a gas so energy is required and thus this is an endothermic process. This also means its change in enthalpy is positive.

[Jonathan Shyu 3L]

Sublimation is the process of changing a substance from a solid directly to a gas. Because of this, it takes energy to break apart or loosen the bonds of a solid, thus taking in energy is endothermic.

[Emily Engelkemier 1E]

Sublimation is when a solid goes directly to a gas, and it is endothermic because it requires heat for the atoms/molecules in a solid to expand.

[oliviahelou]

Sublimation is endothermic (requires heat)

[Milan Vognarek 1A]

Sublimation is endothermic since heat must be absorbed in order to break the bonds holding the atoms or molecules of the solid together.

[Terrence Chi]

Hi, sublimation is endothermic because it requires heat to break apart a solid's bonds and change it into a gaseous state without its becoming liquid. Hope this helps!

[Sidharth Paparaju 3B]

Sublimation is going from a solid to a gas. Because S-->L is endothermic and L-->G is endothermic, the enthalpies can be added (since they are state functions) so we know that S-->G is also endothermic (requires energy).

[Zoe Dhalla 3I]

Sublimation is an endothermic phase transition that occurs at temperatures and pressures below the triple point of a chemical in the phase diagram.

[kareena_prasad]

Sublimation is endothermic because it takes energy for a solid molecule to become a gas since gas molecules have more kinetic energy than solid molecules. The opposite process, deposition (gas changing to a solid), is exothermic because energy must be released from the gas molecule in order for it to turn into a solid.

[RobinFong_2B]

Endothermic! sublimation requires heat to break its bonds and convert to a gas, thus it has a positive change in delta H.

[Eric Sun 2G]

Sublimation is endothermic because we have to put in energy to break the intermolecular forces that make up a solid and turn it into a gas.

[Chris Korban 1D]

sublimation is highly endothermic as it takes a lot of energy to break down the bonds of a solid into a gas

[Ashley Wilson 2L]

Sublimation is an endothermic process. The intermolecular forces between the solid must be completely overcome in order for the molecules to move freely as a gas, meaning the input of energy or heat is required.

[Ashley Wilson 2L]

Sublimation is an endothermic process. The intermolecular forces between the solid must be completely overcome in order for the molecules to move freely as a gas, meaning the input of energy or heat is required.

[Wilson Zheng 1L]

The enthalpy increases during sublimation as it requires energy to break the bonds in a solid to form a gaseous state!

[Amaris Cagungun 1F]

Sublimation is an endothermic process as it requires heat to break apart the bonds of a solid to change it into a gas.

[Shreya Arcot 3K]

Sublimation is an endothermic process because heat is required to change from solid directly to gas.

[Hannah Carsey 1B]

Sublimation is the transition of a substance directly from a solid state to a gas state, without passing through the liquid state. Sublimation is an endothermic process (positive delta H, enthalpy) because it requires heat to break bonds.

[Diana Avalos]

Sublimation is an endothermic phase change as it requires heat(energy) to go from a solid to gas. Deposition (gas to solid) would be an example of an exothermic phase change.