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What happens when solid substances change directly to gas without passing the liquid state?
sublimation, in physics, conversion of a substance from the solid to the gaseous state without its becoming liquid. An example is the vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature. The phenomenon is the result of vapour pressure and temperature relationships.
What is the change of a substance from a liquid to a gas called?
boiling
vaporization, conversion of a substance from the liquid or solid phase into the gaseous (vapour) phase. If conditions allow the formation of vapour bubbles within a liquid, the vaporization process is called boiling.
What is the change of solid directly into the gaseous state without passing through the liquid state on heating and vice versa called?
sublimation
Answer: The process through which a solid directly changes to a gaseous state without passing through a liquid state is known as sublimation.
What is it called when a solid turns directly into a gas without turning into a liquid first?
Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water.
What is the process that changes a substance?
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
What directly changes into gaseous state?
The process in which a solid directly changes into a gaseous state is known as sublimation and the amount of heat energy required to convert a mole of solid directly into the gaseous state at constant pressure is known as the molar enthalpy of sublimation.
What is it called when a substance changes from a gas to a solid?
Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.