This phenomenon is called deposition.
When a gas changes directly to a solid it is known as deposition.
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.
-Solid and a liquid? -A liquid and a gas? -A solid and gas? from roop
A substance which changes state directly from a solid to a gas is said to have sublimed.
Sublimation is the unique property in which a substance can go from a solid to a gas without becoming a liquid. Sublimation is a phase transition.
Iodine
When a substance changes from a solid to a gas, called sublimation, it quickly becomes less dense.
When a gas changes directly to a solid it is known as deposition.
Iodine for example.
Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.
When a gas changes directly to a solid it is known as deposition.
from a solid to gas
boiling point
It is called sublimation.
The change between solid, liquid and gas is known as a change of state and is affected by the substance and its temperature. E.g. at room temperature water is liquid but a 0oc it becomes ice, a solid.
A phase change directly from a gas to a solid is called deposition.
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.