# How are sublimation and deposition alike and how they are different?

Apr 11, 2017

#### Answer:

They are opposites

#### Explanation:

Sublimation is a phase transition from solid to gas (skipping the liquid).
Deposition is a phase transition from gas to solid (skipping the liquid).

They both skip a phase (liquid), but they refer to physical changes that occur in different directions. E.g. Carbon dioxide at standard pressure exerts both properties:

$C {O}_{2} \left(s\right) \to C {O}_{2} \left(g\right)$ <-- Sublimation
$C {O}_{2} \left(g\right) \to C {O}_{2} \left(s\right)$ <-- Deposition